Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model
Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodyna...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Xu, Guoji [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy - Chang, Guanru ELSEVIER, 2015, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:259 ; year:2022 ; day:1 ; month:09 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.oceaneng.2022.111869 |
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ELV058589260 |
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| 245 | 1 | 0 | |a Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model |
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| 520 | |a Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. | ||
| 520 | |a Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. | ||
| 650 | 7 | |a OpenFOAM |2 Elsevier | |
| 650 | 7 | |a Adaptive surrogate model |2 Elsevier | |
| 650 | 7 | |a Auxiliary structure |2 Elsevier | |
| 650 | 7 | |a Hydrodynamic performance |2 Elsevier | |
| 650 | 7 | |a Circular bridge pier |2 Elsevier | |
| 700 | 1 | |a Jin, Yuanjie |4 oth | |
| 700 | 1 | |a Xue, Shihao |4 oth | |
| 700 | 1 | |a Yuan, Peng |4 oth | |
| 700 | 1 | |a Wang, Jinsheng |4 oth | |
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10.1016/j.oceaneng.2022.111869 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001942.pica (DE-627)ELV058589260 (ELSEVIER)S0029-8018(22)01211-2 DE-627 ger DE-627 rakwb eng 540 VZ 660 VZ 540 VZ BIODIV DE-30 fid 42.13 bkl Xu, Guoji verfasserin aut Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. OpenFOAM Elsevier Adaptive surrogate model Elsevier Auxiliary structure Elsevier Hydrodynamic performance Elsevier Circular bridge pier Elsevier Jin, Yuanjie oth Xue, Shihao oth Yuan, Peng oth Wang, Jinsheng oth Enthalten in Elsevier Science Chang, Guanru ELSEVIER Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy 2015 Amsterdam [u.a.] (DE-627)ELV01276728X volume:259 year:2022 day:1 month:09 pages:0 https://doi.org/10.1016/j.oceaneng.2022.111869 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.13 Molekularbiologie VZ AR 259 2022 1 0901 0 |
| spelling |
10.1016/j.oceaneng.2022.111869 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001942.pica (DE-627)ELV058589260 (ELSEVIER)S0029-8018(22)01211-2 DE-627 ger DE-627 rakwb eng 540 VZ 660 VZ 540 VZ BIODIV DE-30 fid 42.13 bkl Xu, Guoji verfasserin aut Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. OpenFOAM Elsevier Adaptive surrogate model Elsevier Auxiliary structure Elsevier Hydrodynamic performance Elsevier Circular bridge pier Elsevier Jin, Yuanjie oth Xue, Shihao oth Yuan, Peng oth Wang, Jinsheng oth Enthalten in Elsevier Science Chang, Guanru ELSEVIER Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy 2015 Amsterdam [u.a.] (DE-627)ELV01276728X volume:259 year:2022 day:1 month:09 pages:0 https://doi.org/10.1016/j.oceaneng.2022.111869 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.13 Molekularbiologie VZ AR 259 2022 1 0901 0 |
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10.1016/j.oceaneng.2022.111869 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001942.pica (DE-627)ELV058589260 (ELSEVIER)S0029-8018(22)01211-2 DE-627 ger DE-627 rakwb eng 540 VZ 660 VZ 540 VZ BIODIV DE-30 fid 42.13 bkl Xu, Guoji verfasserin aut Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. OpenFOAM Elsevier Adaptive surrogate model Elsevier Auxiliary structure Elsevier Hydrodynamic performance Elsevier Circular bridge pier Elsevier Jin, Yuanjie oth Xue, Shihao oth Yuan, Peng oth Wang, Jinsheng oth Enthalten in Elsevier Science Chang, Guanru ELSEVIER Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy 2015 Amsterdam [u.a.] (DE-627)ELV01276728X volume:259 year:2022 day:1 month:09 pages:0 https://doi.org/10.1016/j.oceaneng.2022.111869 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.13 Molekularbiologie VZ AR 259 2022 1 0901 0 |
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10.1016/j.oceaneng.2022.111869 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001942.pica (DE-627)ELV058589260 (ELSEVIER)S0029-8018(22)01211-2 DE-627 ger DE-627 rakwb eng 540 VZ 660 VZ 540 VZ BIODIV DE-30 fid 42.13 bkl Xu, Guoji verfasserin aut Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. OpenFOAM Elsevier Adaptive surrogate model Elsevier Auxiliary structure Elsevier Hydrodynamic performance Elsevier Circular bridge pier Elsevier Jin, Yuanjie oth Xue, Shihao oth Yuan, Peng oth Wang, Jinsheng oth Enthalten in Elsevier Science Chang, Guanru ELSEVIER Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy 2015 Amsterdam [u.a.] (DE-627)ELV01276728X volume:259 year:2022 day:1 month:09 pages:0 https://doi.org/10.1016/j.oceaneng.2022.111869 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.13 Molekularbiologie VZ AR 259 2022 1 0901 0 |
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10.1016/j.oceaneng.2022.111869 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001942.pica (DE-627)ELV058589260 (ELSEVIER)S0029-8018(22)01211-2 DE-627 ger DE-627 rakwb eng 540 VZ 660 VZ 540 VZ BIODIV DE-30 fid 42.13 bkl Xu, Guoji verfasserin aut Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model 2022transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. OpenFOAM Elsevier Adaptive surrogate model Elsevier Auxiliary structure Elsevier Hydrodynamic performance Elsevier Circular bridge pier Elsevier Jin, Yuanjie oth Xue, Shihao oth Yuan, Peng oth Wang, Jinsheng oth Enthalten in Elsevier Science Chang, Guanru ELSEVIER Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy 2015 Amsterdam [u.a.] (DE-627)ELV01276728X volume:259 year:2022 day:1 month:09 pages:0 https://doi.org/10.1016/j.oceaneng.2022.111869 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U FID-BIODIV SSG-OLC-PHA 42.13 Molekularbiologie VZ AR 259 2022 1 0901 0 |
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Enthalten in Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy Amsterdam [u.a.] volume:259 year:2022 day:1 month:09 pages:0 |
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Enthalten in Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy Amsterdam [u.a.] volume:259 year:2022 day:1 month:09 pages:0 |
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Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy |
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Xu, Guoji @@aut@@ Jin, Yuanjie @@oth@@ Xue, Shihao @@oth@@ Yuan, Peng @@oth@@ Wang, Jinsheng @@oth@@ |
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Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model |
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Self-healable hydrogel on tumor cell as drug delivery system for localized and effective therapy |
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hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model |
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Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model |
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Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. |
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Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. |
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Reducing the hydrodynamic force for a cylindrical structure is extremely important in oceanic engineering applications. In this study, an auxiliary structure, shaped by two controlling parameters, is proposed to be placed in front of a typical circular bridge pier, desiring to mitigate the hydrodynamic loads on the pier. Two-dimensional numerical simulations are carried out through the open source CFD (computational fluid dynamics) program OpenFOAM to optimize the shape of the auxiliary structure by using a developed adaptive surrogate model, where the optimal auxiliary structure is identified by searching optimal hydrodynamic indexes, i.e., the drag and lift coefficients. The salient observations show that: (1) High efficiency is embodied in the whole optimization procedure by way of adopting the developed adaptive model; (2) The optimal auxiliary structure is featured with convex surfaces and can reduce the vortex scale and accelerate the vortex dissipation; (3) Investigation of the hydrodynamic performance proves that the optimal auxiliary structure can effectively decrease the drag and lift coefficients; and (4) The excellent performance emanating from the optimal auxiliary structure retains for a large range of the Reynolds numbers. It is hoped that the presented concept of the optimal auxiliary structure can provide guidance on mitigating the hydrodynamic loads for other oceanic engineered structures. |
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Hydrodynamic shape optimization of an auxiliary structure proposed for circular bridge pier based on a developed adaptive surrogate model |
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