Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
655275 | International Journal of Heat and Fluid Flow | 2013 | 17 Pages |
Abstract
To predict turbulence in porous media, a new approach is discussed. By double (both volume and Reynolds) averaging Navier-Stokes equations, there appear three unknown covariant terms in the momentum equation. They are namely the dispersive covariance, the macro-scale and the micro-scale Reynolds stresses, in the present study. For the macro-scale Reynolds stress, the TCL (two-component-limit) second moment closure is applied whereas the eddy viscosity models are applied to the other covariant terms: the Smagorinsky model and the one-equation eddy viscosity model, respectively for the dispersive covariance and the micro-scale Reynolds stress. The presently proposed model is evaluated in square rib array flows and porous wall channel flows with reasonable accuracy though further development is required.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Yusuke Kuwata, Kazuhiko Suga,