Dual effects of buoyancy and enstrophy transfer on scaling behavior of a shell model proposed for homogeneous turbulent convection
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- 作者：Yu Xing ; Peiqing Liu ; Hao Guo ; guohao@buaa.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Turbulent convection ; SabraT model ; Bolgiano-Obuchov scaling ; Buoyancy
- 刊名：Communications in Nonlinear Science and Numerical Simulation
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：44
- 期：Complete
- 页码：74-88
- 全文大小：1017 K
文摘
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We explain why Bolgiano-Obukhov (BO) scaling behavior is unavailable in the SabraT model proposed for turbulent thermal convection.
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A new γ-dependent scaling behavior is setup in the buoyancy relevant regime, which is found to equivalently deviate from the enstrophy cascade scaling and BO scaling.
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This deviation is mainly discussed by two dimensionless parameters.