Effect of rotation on isotropic turbulence: computation and modelling
This paper uses numerical simulation to analyse the effects of uniform rotation on homogeneous turbulence. Both large-eddy and full simulations were made. The results indicate that the predominant effect of rotation is to decrease the rate of dissipation of the turbulence and increase the lengthscal...
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| Veröffentlicht in: | Journal of fluid mechanics 1985-05, Vol.154, p.321-336 |
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| container_title | Journal of fluid mechanics |
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| creator | Bardina, Jorge Ferziger, J. H. Rogallo, R. S. |
| description | This paper uses numerical simulation to analyse the effects of uniform rotation on homogeneous turbulence. Both large-eddy and full simulations were made. The results indicate that the predominant effect of rotation is to decrease the rate of dissipation of the turbulence and increase the lengthscales, especially those along the axis of rotation. These effects are a consequence of the reduction, due to the generation of inertial waves, of the net energy transfer from large eddies to small ones. Experiments are also influenced by a more complicated interaction between the rotation and the wakes of the turbulence-generating grid which modifies the nominal initial conditions in the experiment. The latter effect is accounted for in simulations by modifying the initial conditions. Finally, a two-equation model is proposed that accounts for the effects of rotation and is able to reproduce the experimental decay of the turbulent kinetic energy. |
| doi_str_mv | 10.1017/S0022112085001550 |
| format | Article |
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The latter effect is accounted for in simulations by modifying the initial conditions. Finally, a two-equation model is proposed that accounts for the effects of rotation and is able to reproduce the experimental decay of the turbulent kinetic energy.</description><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Fluid Mechanics And Heat Transfer</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Physics</subject><subject>Turbulent flows, convection, and heat transfer</subject><issn>0022-1120</issn><issn>1469-7645</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNp9kMtqHDEURIVxwGMnH2Dwohchu3b0aL28C87ETmIIeZGluKOWjOxuaSypIfn7aJjBm0DgQi3q1KUohM4JviSYyLffMaaUEIoVx5hwjo_QigxC91IM_Bitdna_80_QaSkPjWFYyxVar713tnbJdzlVqCHFrl0oqea0DbarS94sk4vWXXU2zdvlAEEcuzmNbppCvH-JXniYint10DP088P6x_Vtf_fl5uP1u7veDhrXfuBKblpdQTXRIyg-SCE8IQwEV94SshMKyg2Kc6DYK7AU8MgYHTeMY3aG3uz_bnN6WlypZg7Ftg4QXVqKoQOXSivaQLIHbU6lZOfNNocZ8h9DsNkNZv4ZrGVeH55DsTD5DNGG8hxUnAqMRcMu9liEAibWXAzRqlmMUq2b3e_tUKr7_ZyG_GiEZJIbcfPVfP4kv0nNf5n3jWeHpjBvchjvnXlIS45txv90_Qv1iI-D</recordid><startdate>19850501</startdate><enddate>19850501</enddate><creator>Bardina, Jorge</creator><creator>Ferziger, J. 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Fluid Mech</addtitle><date>1985-05-01</date><risdate>1985</risdate><volume>154</volume><spage>321</spage><epage>336</epage><pages>321-336</pages><issn>0022-1120</issn><eissn>1469-7645</eissn><coden>JFLSA7</coden><abstract>This paper uses numerical simulation to analyse the effects of uniform rotation on homogeneous turbulence. Both large-eddy and full simulations were made. The results indicate that the predominant effect of rotation is to decrease the rate of dissipation of the turbulence and increase the lengthscales, especially those along the axis of rotation. These effects are a consequence of the reduction, due to the generation of inertial waves, of the net energy transfer from large eddies to small ones. Experiments are also influenced by a more complicated interaction between the rotation and the wakes of the turbulence-generating grid which modifies the nominal initial conditions in the experiment. 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| ispartof | Journal of fluid mechanics, 1985-05, Vol.154, p.321-336 |
| issn | 0022-1120 1469-7645 |
| language | eng |
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| source | Cambridge Journals; NASA Technical Reports Server |
| subjects | Exact sciences and technology Fluid dynamics Fluid Mechanics And Heat Transfer Fundamental areas of phenomenology (including applications) Physics Turbulent flows, convection, and heat transfer |
| title | Effect of rotation on isotropic turbulence: computation and modelling |
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