Identification of Ellis rheological law from free surface velocity
This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is co...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Al-Behadili, Abdulrahman [verfasserIn] Sellier, Mathieu [verfasserIn] Hewett, James N. [verfasserIn] Nokes, Roger I. [verfasserIn] Moyers-Gonzalez, Miguel [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of non-Newtonian fluid mechanics - Amsterdam : Elsevier, 1976, 263, Seite 15-23 |
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| Übergeordnetes Werk: |
volume:263 ; pages:15-23 |
| DOI / URN: |
10.1016/j.jnnfm.2018.10.010 |
|---|
| Katalog-ID: |
ELV001631896 |
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| 245 | 1 | 0 | |a Identification of Ellis rheological law from free surface velocity |
| 264 | 1 | |c 2018 | |
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| 520 | |a This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. | ||
| 650 | 4 | |a Lubrication approximation | |
| 650 | 4 | |a Ellis model | |
| 650 | 4 | |a Parameter identification | |
| 650 | 4 | |a Non-Newtonian fluid | |
| 650 | 4 | |a Free surface velocity | |
| 700 | 1 | |a Sellier, Mathieu |e verfasserin |0 (orcid)0000-0002-5060-1707 |4 aut | |
| 700 | 1 | |a Hewett, James N. |e verfasserin |4 aut | |
| 700 | 1 | |a Nokes, Roger I. |e verfasserin |4 aut | |
| 700 | 1 | |a Moyers-Gonzalez, Miguel |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Journal of non-Newtonian fluid mechanics |d Amsterdam : Elsevier, 1976 |g 263, Seite 15-23 |h Online-Ressource |w (DE-627)320050823 |w (DE-600)2017337-4 |w (DE-576)11739890X |x 0377-0257 |7 nnns |
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| 936 | b | k | |a 50.33 |j Technische Strömungsmechanik |
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10.1016/j.jnnfm.2018.10.010 doi (DE-627)ELV001631896 (ELSEVIER)S0377-0257(18)30136-8 DE-627 ger DE-627 rda eng 530 DE-600 50.33 bkl Al-Behadili, Abdulrahman verfasserin aut Identification of Ellis rheological law from free surface velocity 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. Lubrication approximation Ellis model Parameter identification Non-Newtonian fluid Free surface velocity Sellier, Mathieu verfasserin (orcid)0000-0002-5060-1707 aut Hewett, James N. verfasserin aut Nokes, Roger I. verfasserin aut Moyers-Gonzalez, Miguel verfasserin aut Enthalten in Journal of non-Newtonian fluid mechanics Amsterdam : Elsevier, 1976 263, Seite 15-23 Online-Ressource (DE-627)320050823 (DE-600)2017337-4 (DE-576)11739890X 0377-0257 nnns volume:263 pages:15-23 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.33 Technische Strömungsmechanik AR 263 15-23 |
| spelling |
10.1016/j.jnnfm.2018.10.010 doi (DE-627)ELV001631896 (ELSEVIER)S0377-0257(18)30136-8 DE-627 ger DE-627 rda eng 530 DE-600 50.33 bkl Al-Behadili, Abdulrahman verfasserin aut Identification of Ellis rheological law from free surface velocity 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. Lubrication approximation Ellis model Parameter identification Non-Newtonian fluid Free surface velocity Sellier, Mathieu verfasserin (orcid)0000-0002-5060-1707 aut Hewett, James N. verfasserin aut Nokes, Roger I. verfasserin aut Moyers-Gonzalez, Miguel verfasserin aut Enthalten in Journal of non-Newtonian fluid mechanics Amsterdam : Elsevier, 1976 263, Seite 15-23 Online-Ressource (DE-627)320050823 (DE-600)2017337-4 (DE-576)11739890X 0377-0257 nnns volume:263 pages:15-23 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.33 Technische Strömungsmechanik AR 263 15-23 |
| allfields_unstemmed |
10.1016/j.jnnfm.2018.10.010 doi (DE-627)ELV001631896 (ELSEVIER)S0377-0257(18)30136-8 DE-627 ger DE-627 rda eng 530 DE-600 50.33 bkl Al-Behadili, Abdulrahman verfasserin aut Identification of Ellis rheological law from free surface velocity 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. Lubrication approximation Ellis model Parameter identification Non-Newtonian fluid Free surface velocity Sellier, Mathieu verfasserin (orcid)0000-0002-5060-1707 aut Hewett, James N. verfasserin aut Nokes, Roger I. verfasserin aut Moyers-Gonzalez, Miguel verfasserin aut Enthalten in Journal of non-Newtonian fluid mechanics Amsterdam : Elsevier, 1976 263, Seite 15-23 Online-Ressource (DE-627)320050823 (DE-600)2017337-4 (DE-576)11739890X 0377-0257 nnns volume:263 pages:15-23 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.33 Technische Strömungsmechanik AR 263 15-23 |
| allfieldsGer |
10.1016/j.jnnfm.2018.10.010 doi (DE-627)ELV001631896 (ELSEVIER)S0377-0257(18)30136-8 DE-627 ger DE-627 rda eng 530 DE-600 50.33 bkl Al-Behadili, Abdulrahman verfasserin aut Identification of Ellis rheological law from free surface velocity 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. Lubrication approximation Ellis model Parameter identification Non-Newtonian fluid Free surface velocity Sellier, Mathieu verfasserin (orcid)0000-0002-5060-1707 aut Hewett, James N. verfasserin aut Nokes, Roger I. verfasserin aut Moyers-Gonzalez, Miguel verfasserin aut Enthalten in Journal of non-Newtonian fluid mechanics Amsterdam : Elsevier, 1976 263, Seite 15-23 Online-Ressource (DE-627)320050823 (DE-600)2017337-4 (DE-576)11739890X 0377-0257 nnns volume:263 pages:15-23 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.33 Technische Strömungsmechanik AR 263 15-23 |
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10.1016/j.jnnfm.2018.10.010 doi (DE-627)ELV001631896 (ELSEVIER)S0377-0257(18)30136-8 DE-627 ger DE-627 rda eng 530 DE-600 50.33 bkl Al-Behadili, Abdulrahman verfasserin aut Identification of Ellis rheological law from free surface velocity 2018 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. Lubrication approximation Ellis model Parameter identification Non-Newtonian fluid Free surface velocity Sellier, Mathieu verfasserin (orcid)0000-0002-5060-1707 aut Hewett, James N. verfasserin aut Nokes, Roger I. verfasserin aut Moyers-Gonzalez, Miguel verfasserin aut Enthalten in Journal of non-Newtonian fluid mechanics Amsterdam : Elsevier, 1976 263, Seite 15-23 Online-Ressource (DE-627)320050823 (DE-600)2017337-4 (DE-576)11739890X 0377-0257 nnns volume:263 pages:15-23 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 50.33 Technische Strömungsmechanik AR 263 15-23 |
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Identification of Ellis rheological law from free surface velocity |
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| title_full |
Identification of Ellis rheological law from free surface velocity |
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Al-Behadili, Abdulrahman |
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Journal of non-Newtonian fluid mechanics |
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Journal of non-Newtonian fluid mechanics |
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eng |
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500 - Science |
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2018 |
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Al-Behadili, Abdulrahman Sellier, Mathieu Hewett, James N. Nokes, Roger I. Moyers-Gonzalez, Miguel |
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Elektronische Aufsätze |
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Al-Behadili, Abdulrahman |
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10.1016/j.jnnfm.2018.10.010 |
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identification of ellis rheological law from free surface velocity |
| title_auth |
Identification of Ellis rheological law from free surface velocity |
| abstract |
This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. |
| abstractGer |
This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. |
| abstract_unstemmed |
This study presents a new rheometry technique which requires a free surface velocity field as an input. By minimising the difference between observed and simulated data, we show here that it is possible to estimate the three parameters of an assumed Ellis rheological law. The dam-break problem is considered here with molasses as the working fluid. The free surface velocity is evaluated by seeding the free surface with buoyant particles and using particle tracking velocimetry. The parameter identification is successfully tested with “synthetic” data produced by the numerical model. The parameter identification algorithm is shown to be robust even when significant noise is added to the synthetic dataset. For true experimental data, the reconstructed flow curve is within 25% of the actual one, demonstrating the potential of the method for circumstances where standard rheometry does not apply. |
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Identification of Ellis rheological law from free surface velocity |
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Sellier, Mathieu Hewett, James N. Nokes, Roger I. Moyers-Gonzalez, Miguel |
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10.1016/j.jnnfm.2018.10.010 |
| up_date |
2024-07-06T22:02:22.240Z |
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