Mixed-derivative skewness for high Prandtl and Reynolds numbers in homogeneous isotropic turbulence
The mixed-derivative skewness S uθ of a passive scalar field in high Reynolds and Prandtl numbers decaying homogeneous isotropic turbulence is studied numerically using eddy-damped quasi-normal Markovian closure, for Re λ ≥ 103 up to Pr = 105. A convergence of S uθ for Pr ≥ 103 is observed for any h...
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| Veröffentlicht in: | Physics of fluids (1994) 2016-08, Vol.28 (8) |
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| container_title | Physics of fluids (1994) |
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| creator | Briard, Antoine Gomez, Thomas |
| description | The mixed-derivative skewness S
uθ
of a passive scalar field in high Reynolds and Prandtl numbers decaying homogeneous isotropic turbulence is studied numerically using eddy-damped quasi-normal Markovian closure, for Re
λ
≥ 103 up to Pr = 105. A convergence of S
uθ
for Pr ≥ 103 is observed for any high enough Reynolds number. This asymptotic high Pr regime can be interpreted as a saturation of the mixing properties of the flow at small scales. The decay of the derivative skewnesses from high to low Reynolds numbers and the influence of large scales initial conditions are investigated as well. |
| doi_str_mv | 10.1063/1.4961255 |
| format | Article |
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uθ
of a passive scalar field in high Reynolds and Prandtl numbers decaying homogeneous isotropic turbulence is studied numerically using eddy-damped quasi-normal Markovian closure, for Re
λ
≥ 103 up to Pr = 105. A convergence of S
uθ
for Pr ≥ 103 is observed for any high enough Reynolds number. This asymptotic high Pr regime can be interpreted as a saturation of the mixing properties of the flow at small scales. The decay of the derivative skewnesses from high to low Reynolds numbers and the influence of large scales initial conditions are investigated as well.</description><identifier>ISSN: 1070-6631</identifier><identifier>EISSN: 1089-7666</identifier><identifier>DOI: 10.1063/1.4961255</identifier><identifier>CODEN: PHFLE6</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Computational fluid dynamics ; Fluid dynamics ; Fluid flow ; Fluid mechanics ; Initial conditions ; Isotropic turbulence ; Markov processes ; Mechanics ; Physics ; Reynolds number ; Skewness</subject><ispartof>Physics of fluids (1994), 2016-08, Vol.28 (8)</ispartof><rights>Author(s)</rights><rights>2016 Author(s). Published by AIP Publishing.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c462t-ad10a62cd8bed22fae3b6348e57b7c31f8457249cf152dde1df489c1e87dad413</citedby><cites>FETCH-LOGICAL-c462t-ad10a62cd8bed22fae3b6348e57b7c31f8457249cf152dde1df489c1e87dad413</cites><orcidid>0000-0002-3796-0588 ; 0000-0003-2017-3446</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,777,781,791,882,4498,27905,27906</link.rule.ids><backlink>$$Uhttps://hal.sorbonne-universite.fr/hal-01429653$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Briard, Antoine</creatorcontrib><creatorcontrib>Gomez, Thomas</creatorcontrib><title>Mixed-derivative skewness for high Prandtl and Reynolds numbers in homogeneous isotropic turbulence</title><title>Physics of fluids (1994)</title><description>The mixed-derivative skewness S
uθ
of a passive scalar field in high Reynolds and Prandtl numbers decaying homogeneous isotropic turbulence is studied numerically using eddy-damped quasi-normal Markovian closure, for Re
λ
≥ 103 up to Pr = 105. A convergence of S
uθ
for Pr ≥ 103 is observed for any high enough Reynolds number. This asymptotic high Pr regime can be interpreted as a saturation of the mixing properties of the flow at small scales. The decay of the derivative skewnesses from high to low Reynolds numbers and the influence of large scales initial conditions are investigated as well.</description><subject>Computational fluid dynamics</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Fluid mechanics</subject><subject>Initial conditions</subject><subject>Isotropic turbulence</subject><subject>Markov processes</subject><subject>Mechanics</subject><subject>Physics</subject><subject>Reynolds number</subject><subject>Skewness</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp9kF1LwzAUhosoqNML_0HAK4XOnDRN28shfsFEEb0OaXLqol0yk3bqv7djw10I3pwvHh4Ob5KcAB0DFdkFjHklgOX5TnIAtKzSQgixu5oLmgqRwX5yGOMbpTSrmDhI9L39QpMaDHapOrtEEt_x02GMpPGBzOzrjDwG5UzXkqGSJ_x2vjWRuH5eY4jEOjLzc_-KDn0_rNF3wS-sJl0f6r5Fp_Eo2WtUG_F400fJy_XV8-VtOn24ubucTFPNBetSZYAqwbQpazSMNQqzWmS8xLyoC51BU_K8YLzSDeTMGATT8LLSgGVhlOGQjZKztXemWrkIdq7Ct_TKytvJVK5uFDirRJ4tV-zpml0E_9Fj7OSb74Mb3pMMGIgq57TYGnXwMQZsfrVA5SpvCXKT98Cer9mobTdE6d0vvPRhC8qFaf6D_5p_ANmbj2Y</recordid><startdate>20160801</startdate><enddate>20160801</enddate><creator>Briard, Antoine</creator><creator>Gomez, Thomas</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-3796-0588</orcidid><orcidid>https://orcid.org/0000-0003-2017-3446</orcidid></search><sort><creationdate>20160801</creationdate><title>Mixed-derivative skewness for high Prandtl and Reynolds numbers in homogeneous isotropic turbulence</title><author>Briard, Antoine ; Gomez, Thomas</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c462t-ad10a62cd8bed22fae3b6348e57b7c31f8457249cf152dde1df489c1e87dad413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Computational fluid dynamics</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Fluid mechanics</topic><topic>Initial conditions</topic><topic>Isotropic turbulence</topic><topic>Markov processes</topic><topic>Mechanics</topic><topic>Physics</topic><topic>Reynolds number</topic><topic>Skewness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Briard, Antoine</creatorcontrib><creatorcontrib>Gomez, Thomas</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Briard, Antoine</au><au>Gomez, Thomas</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mixed-derivative skewness for high Prandtl and Reynolds numbers in homogeneous isotropic turbulence</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2016-08-01</date><risdate>2016</risdate><volume>28</volume><issue>8</issue><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>The mixed-derivative skewness S
uθ
of a passive scalar field in high Reynolds and Prandtl numbers decaying homogeneous isotropic turbulence is studied numerically using eddy-damped quasi-normal Markovian closure, for Re
λ
≥ 103 up to Pr = 105. A convergence of S
uθ
for Pr ≥ 103 is observed for any high enough Reynolds number. This asymptotic high Pr regime can be interpreted as a saturation of the mixing properties of the flow at small scales. The decay of the derivative skewnesses from high to low Reynolds numbers and the influence of large scales initial conditions are investigated as well.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4961255</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-3796-0588</orcidid><orcidid>https://orcid.org/0000-0003-2017-3446</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Physics of fluids (1994), 2016-08, Vol.28 (8) |
| issn | 1070-6631 1089-7666 |
| language | eng |
| recordid | cdi_crossref_primary_10_1063_1_4961255 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Computational fluid dynamics Fluid dynamics Fluid flow Fluid mechanics Initial conditions Isotropic turbulence Markov processes Mechanics Physics Reynolds number Skewness |
| title | Mixed-derivative skewness for high Prandtl and Reynolds numbers in homogeneous isotropic turbulence |
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