Sensitivity analysis of optimal transient growth for turbulent boundary layers
Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used t...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Alizard, Frédéric [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2015transfer abstract |
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| Schlagwörter: |
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| Umfang: |
14 |
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| Übergeordnetes Werk: |
Enthalten in: Global organic carbon emissions from primary sources from 1960 to 2009 - Huang, Ye ELSEVIER, 2015transfer abstract, Paris |
|---|---|
| Übergeordnetes Werk: |
volume:49 ; year:2015 ; pages:373-386 ; extent:14 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.euromechflu.2014.04.013 |
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ELV029158575 |
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| 520 | |a Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. | ||
| 520 | |a Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. | ||
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10.1016/j.euromechflu.2014.04.013 doi GBVA2015017000023.pica (DE-627)ELV029158575 (ELSEVIER)S0997-7546(14)00077-6 DE-627 ger DE-627 rakwb eng 530 530 DE-600 550 VZ 690 VZ 610 VZ 44.65 bkl Alizard, Frédéric verfasserin aut Sensitivity analysis of optimal transient growth for turbulent boundary layers 2015transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Optimal transient growth Elsevier Turbulent boundary layer Elsevier Sensitivity to mean flow modification Elsevier Robinet, Jean-Christophe oth Filliard, Guillaume oth Enthalten in Gauthier-Villars Huang, Ye ELSEVIER Global organic carbon emissions from primary sources from 1960 to 2009 2015transfer abstract Paris (DE-627)ELV01880182X volume:49 year:2015 pages:373-386 extent:14 https://doi.org/10.1016/j.euromechflu.2014.04.013 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_40 GBV_ILN_70 44.65 Chirurgie VZ AR 49 2015 373-386 14 045F 530 |
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10.1016/j.euromechflu.2014.04.013 doi GBVA2015017000023.pica (DE-627)ELV029158575 (ELSEVIER)S0997-7546(14)00077-6 DE-627 ger DE-627 rakwb eng 530 530 DE-600 550 VZ 690 VZ 610 VZ 44.65 bkl Alizard, Frédéric verfasserin aut Sensitivity analysis of optimal transient growth for turbulent boundary layers 2015transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Optimal transient growth Elsevier Turbulent boundary layer Elsevier Sensitivity to mean flow modification Elsevier Robinet, Jean-Christophe oth Filliard, Guillaume oth Enthalten in Gauthier-Villars Huang, Ye ELSEVIER Global organic carbon emissions from primary sources from 1960 to 2009 2015transfer abstract Paris (DE-627)ELV01880182X volume:49 year:2015 pages:373-386 extent:14 https://doi.org/10.1016/j.euromechflu.2014.04.013 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_40 GBV_ILN_70 44.65 Chirurgie VZ AR 49 2015 373-386 14 045F 530 |
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10.1016/j.euromechflu.2014.04.013 doi GBVA2015017000023.pica (DE-627)ELV029158575 (ELSEVIER)S0997-7546(14)00077-6 DE-627 ger DE-627 rakwb eng 530 530 DE-600 550 VZ 690 VZ 610 VZ 44.65 bkl Alizard, Frédéric verfasserin aut Sensitivity analysis of optimal transient growth for turbulent boundary layers 2015transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Optimal transient growth Elsevier Turbulent boundary layer Elsevier Sensitivity to mean flow modification Elsevier Robinet, Jean-Christophe oth Filliard, Guillaume oth Enthalten in Gauthier-Villars Huang, Ye ELSEVIER Global organic carbon emissions from primary sources from 1960 to 2009 2015transfer abstract Paris (DE-627)ELV01880182X volume:49 year:2015 pages:373-386 extent:14 https://doi.org/10.1016/j.euromechflu.2014.04.013 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_40 GBV_ILN_70 44.65 Chirurgie VZ AR 49 2015 373-386 14 045F 530 |
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10.1016/j.euromechflu.2014.04.013 doi GBVA2015017000023.pica (DE-627)ELV029158575 (ELSEVIER)S0997-7546(14)00077-6 DE-627 ger DE-627 rakwb eng 530 530 DE-600 550 VZ 690 VZ 610 VZ 44.65 bkl Alizard, Frédéric verfasserin aut Sensitivity analysis of optimal transient growth for turbulent boundary layers 2015transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. Optimal transient growth Elsevier Turbulent boundary layer Elsevier Sensitivity to mean flow modification Elsevier Robinet, Jean-Christophe oth Filliard, Guillaume oth Enthalten in Gauthier-Villars Huang, Ye ELSEVIER Global organic carbon emissions from primary sources from 1960 to 2009 2015transfer abstract Paris (DE-627)ELV01880182X volume:49 year:2015 pages:373-386 extent:14 https://doi.org/10.1016/j.euromechflu.2014.04.013 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA GBV_ILN_40 GBV_ILN_70 44.65 Chirurgie VZ AR 49 2015 373-386 14 045F 530 |
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Enthalten in Global organic carbon emissions from primary sources from 1960 to 2009 Paris volume:49 year:2015 pages:373-386 extent:14 |
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Sensitivity analysis of optimal transient growth for turbulent boundary layers |
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Global organic carbon emissions from primary sources from 1960 to 2009 |
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sensitivity analysis of optimal transient growth for turbulent boundary layers |
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Sensitivity analysis of optimal transient growth for turbulent boundary layers |
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Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. |
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Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. |
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Structural approaches based on modal decomposition of the flow dynamics have gained acceptance for a wide variety of turbulent shear flows. In this context, a singular value decomposition associated with a governing operator, aiming to model the linear amplification of coherent structures, is used to reproduce some fundamental motions in a turbulent boundary layer. In particular, as already found by Cossu et al. (2009), elongated streaky structures scaled in inner and outer units are identified. The sensitivity of these singular values to a mean flow modification is analysed. It is illustrated that the linear amplification of very large-scales which populate the outer motion is not affected when the leading singular value associated with the inner layer is damped. Moreover, we notice that the resulting optimal mean flow deviation is consistent with findings of Xu et al. (2007) in which the active control of a turbulent boundary layer is studied through direct numerical simulations. |
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Sensitivity analysis of optimal transient growth for turbulent boundary layers |
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