Triple Hill’s Vortex Synthetic Eddy Method
Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based o...
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| Autor*in: |
Haywood, John S. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Anmerkung: |
© The Author(s), under exclusive licence to Springer Nature B.V. 2021 |
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| Übergeordnetes Werk: |
Enthalten in: Flow, turbulence and combustion - Springer Netherlands, 1998, 108(2021), 3 vom: 07. Aug., Seite 627-659 |
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| Übergeordnetes Werk: |
volume:108 ; year:2021 ; number:3 ; day:07 ; month:08 ; pages:627-659 |
| Links: |
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| DOI / URN: |
10.1007/s10494-021-00289-4 |
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| Katalog-ID: |
OLC2078201243 |
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| 520 | |a Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. | ||
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| 700 | 1 | |a Bhushan, Shanti |4 aut | |
| 700 | 1 | |a Kees, Christopher E. |4 aut | |
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10.1007/s10494-021-00289-4 doi (DE-627)OLC2078201243 (DE-He213)s10494-021-00289-4-p DE-627 ger DE-627 rakwb eng 500 600 VZ 50.34$jGasdynamik$jAerodynamik bkl 52.51$jFeuerungstechnik bkl Haywood, John S. verfasserin (orcid)0000-0002-5740-6875 aut Triple Hill’s Vortex Synthetic Eddy Method 2021 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2021 Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. Synthetic turbulence Synthetic eddy method Turbulent inflow Sescu, Adrian aut Bhushan, Shanti aut Kees, Christopher E. aut Enthalten in Flow, turbulence and combustion Springer Netherlands, 1998 108(2021), 3 vom: 07. Aug., Seite 627-659 (DE-627)254303641 (DE-600)1463163-5 (DE-576)074754068 1386-6184 nnns volume:108 year:2021 number:3 day:07 month:08 pages:627-659 https://doi.org/10.1007/s10494-021-00289-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_2014 GBV_ILN_4700 50.34$jGasdynamik$jAerodynamik VZ 106419498 (DE-625)106419498 52.51$jFeuerungstechnik VZ 106419935 (DE-625)106419935 AR 108 2021 3 07 08 627-659 |
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10.1007/s10494-021-00289-4 doi (DE-627)OLC2078201243 (DE-He213)s10494-021-00289-4-p DE-627 ger DE-627 rakwb eng 500 600 VZ 50.34$jGasdynamik$jAerodynamik bkl 52.51$jFeuerungstechnik bkl Haywood, John S. verfasserin (orcid)0000-0002-5740-6875 aut Triple Hill’s Vortex Synthetic Eddy Method 2021 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2021 Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. Synthetic turbulence Synthetic eddy method Turbulent inflow Sescu, Adrian aut Bhushan, Shanti aut Kees, Christopher E. aut Enthalten in Flow, turbulence and combustion Springer Netherlands, 1998 108(2021), 3 vom: 07. Aug., Seite 627-659 (DE-627)254303641 (DE-600)1463163-5 (DE-576)074754068 1386-6184 nnns volume:108 year:2021 number:3 day:07 month:08 pages:627-659 https://doi.org/10.1007/s10494-021-00289-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_2014 GBV_ILN_4700 50.34$jGasdynamik$jAerodynamik VZ 106419498 (DE-625)106419498 52.51$jFeuerungstechnik VZ 106419935 (DE-625)106419935 AR 108 2021 3 07 08 627-659 |
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10.1007/s10494-021-00289-4 doi (DE-627)OLC2078201243 (DE-He213)s10494-021-00289-4-p DE-627 ger DE-627 rakwb eng 500 600 VZ 50.34$jGasdynamik$jAerodynamik bkl 52.51$jFeuerungstechnik bkl Haywood, John S. verfasserin (orcid)0000-0002-5740-6875 aut Triple Hill’s Vortex Synthetic Eddy Method 2021 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2021 Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. Synthetic turbulence Synthetic eddy method Turbulent inflow Sescu, Adrian aut Bhushan, Shanti aut Kees, Christopher E. aut Enthalten in Flow, turbulence and combustion Springer Netherlands, 1998 108(2021), 3 vom: 07. Aug., Seite 627-659 (DE-627)254303641 (DE-600)1463163-5 (DE-576)074754068 1386-6184 nnns volume:108 year:2021 number:3 day:07 month:08 pages:627-659 https://doi.org/10.1007/s10494-021-00289-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_2014 GBV_ILN_4700 50.34$jGasdynamik$jAerodynamik VZ 106419498 (DE-625)106419498 52.51$jFeuerungstechnik VZ 106419935 (DE-625)106419935 AR 108 2021 3 07 08 627-659 |
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10.1007/s10494-021-00289-4 doi (DE-627)OLC2078201243 (DE-He213)s10494-021-00289-4-p DE-627 ger DE-627 rakwb eng 500 600 VZ 50.34$jGasdynamik$jAerodynamik bkl 52.51$jFeuerungstechnik bkl Haywood, John S. verfasserin (orcid)0000-0002-5740-6875 aut Triple Hill’s Vortex Synthetic Eddy Method 2021 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2021 Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. Synthetic turbulence Synthetic eddy method Turbulent inflow Sescu, Adrian aut Bhushan, Shanti aut Kees, Christopher E. aut Enthalten in Flow, turbulence and combustion Springer Netherlands, 1998 108(2021), 3 vom: 07. Aug., Seite 627-659 (DE-627)254303641 (DE-600)1463163-5 (DE-576)074754068 1386-6184 nnns volume:108 year:2021 number:3 day:07 month:08 pages:627-659 https://doi.org/10.1007/s10494-021-00289-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_2014 GBV_ILN_4700 50.34$jGasdynamik$jAerodynamik VZ 106419498 (DE-625)106419498 52.51$jFeuerungstechnik VZ 106419935 (DE-625)106419935 AR 108 2021 3 07 08 627-659 |
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10.1007/s10494-021-00289-4 doi (DE-627)OLC2078201243 (DE-He213)s10494-021-00289-4-p DE-627 ger DE-627 rakwb eng 500 600 VZ 50.34$jGasdynamik$jAerodynamik bkl 52.51$jFeuerungstechnik bkl Haywood, John S. verfasserin (orcid)0000-0002-5740-6875 aut Triple Hill’s Vortex Synthetic Eddy Method 2021 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Author(s), under exclusive licence to Springer Nature B.V. 2021 Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. Synthetic turbulence Synthetic eddy method Turbulent inflow Sescu, Adrian aut Bhushan, Shanti aut Kees, Christopher E. aut Enthalten in Flow, turbulence and combustion Springer Netherlands, 1998 108(2021), 3 vom: 07. Aug., Seite 627-659 (DE-627)254303641 (DE-600)1463163-5 (DE-576)074754068 1386-6184 nnns volume:108 year:2021 number:3 day:07 month:08 pages:627-659 https://doi.org/10.1007/s10494-021-00289-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_11 GBV_ILN_2014 GBV_ILN_4700 50.34$jGasdynamik$jAerodynamik VZ 106419498 (DE-625)106419498 52.51$jFeuerungstechnik VZ 106419935 (DE-625)106419935 AR 108 2021 3 07 08 627-659 |
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Enthalten in Flow, turbulence and combustion 108(2021), 3 vom: 07. Aug., Seite 627-659 volume:108 year:2021 number:3 day:07 month:08 pages:627-659 |
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Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. © The Author(s), under exclusive licence to Springer Nature B.V. 2021 |
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Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. © The Author(s), under exclusive licence to Springer Nature B.V. 2021 |
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Abstract The generation of initial or inflow synthetic turbulent velocity or scalar fields reproducing statistical characteristics of realistic turbulence is still a challenge. The synthetic eddy method, previously introduced in the context of inflow conditions for large eddy simulations, is based on the assumption that turbulence can be regarded as a superposition of coherent structures. In this paper, a new type of synthetic eddy method is proposed, where the fundamental eddy is constructed by superposing three Hill’s vortices, with their axes orthogonal to each other. A distribution of Hill’s vortices is used to synthesize an anisotropic turbulent velocity field that satisfies the incompressibility condition and match a given Reynolds stress tensor. The amplitudes of the three vortices that form the fundamental eddy are calculated from known Reynolds stress profiles through a transformation from the physical reference frame to the principal-axis reference frame. In this way, divergence-free anisotropic turbulent velocity fields are obtained that can reproduce a given Reynolds stress tensor. The model was tested on both isotropic and anisotropic turbulent velocity fields, in the framework of grid turbulence decay and turbulent channel flow, respectively. The transition from artificial to realistic turbulence in the proximity to the inflow boundary was found to be small in all test cases that were considered. © The Author(s), under exclusive licence to Springer Nature B.V. 2021 |
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