Volume 7, Issue 4
Computer Experiments on Rapidly Rotating Plane Couette Flow

Mustafa Barri & Helge I. Andersson

Commun. Comput. Phys., 7 (2010), pp. 683-717.

Published online: 2010-07

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  • Abstract

The turbulence in plane Couette flow subjected to system rotation is investigated. The anti-cyclonic rotation rate is well above the range in which roll-cells occur and close to the upper bound, beyond which no stationary turbulent states of motion exist. The mean velocity profile exhibits a linear region over 80% of the cross-section, in which the mean absolute vorticity is driven to zero. Viscous effects still prevail in narrow regions next to the walls, whereas the quasi-homogeneous central core exhibits abnormal anisotropies of the Reynolds stress tensor, the vorticity tensor and the energy dissipation rate tensor. In spite of the distinctly higher turbulence level observed, a 13% drag reduction is found. This paradoxical finding is ascribed to configurational changes in the turbulence field brought about by the system rotation.

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@Article{CiCP-7-683, author = {Mustafa Barri and Helge I. Andersson}, title = {Computer Experiments on Rapidly Rotating Plane Couette Flow}, journal = {Communications in Computational Physics}, year = {2010}, volume = {7}, number = {4}, pages = {683--717}, abstract = {

The turbulence in plane Couette flow subjected to system rotation is investigated. The anti-cyclonic rotation rate is well above the range in which roll-cells occur and close to the upper bound, beyond which no stationary turbulent states of motion exist. The mean velocity profile exhibits a linear region over 80% of the cross-section, in which the mean absolute vorticity is driven to zero. Viscous effects still prevail in narrow regions next to the walls, whereas the quasi-homogeneous central core exhibits abnormal anisotropies of the Reynolds stress tensor, the vorticity tensor and the energy dissipation rate tensor. In spite of the distinctly higher turbulence level observed, a 13% drag reduction is found. This paradoxical finding is ascribed to configurational changes in the turbulence field brought about by the system rotation.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.2009.09.068}, url = {http://global-sci.org/intro/article_detail/cicp/7650.html} }
TY - JOUR T1 - Computer Experiments on Rapidly Rotating Plane Couette Flow AU - Mustafa Barri & Helge I. Andersson JO - Communications in Computational Physics VL - 4 SP - 683 EP - 717 PY - 2010 DA - 2010/07 SN - 7 DO - http://dor.org/10.4208/cicp.2009.09.068 UR - https://global-sci.org/intro/cicp/7650.html KW - AB -

The turbulence in plane Couette flow subjected to system rotation is investigated. The anti-cyclonic rotation rate is well above the range in which roll-cells occur and close to the upper bound, beyond which no stationary turbulent states of motion exist. The mean velocity profile exhibits a linear region over 80% of the cross-section, in which the mean absolute vorticity is driven to zero. Viscous effects still prevail in narrow regions next to the walls, whereas the quasi-homogeneous central core exhibits abnormal anisotropies of the Reynolds stress tensor, the vorticity tensor and the energy dissipation rate tensor. In spite of the distinctly higher turbulence level observed, a 13% drag reduction is found. This paradoxical finding is ascribed to configurational changes in the turbulence field brought about by the system rotation.

Mustafa Barri & Helge I. Andersson. (1970). Computer Experiments on Rapidly Rotating Plane Couette Flow. Communications in Computational Physics. 7 (4). 683-717. doi:10.4208/cicp.2009.09.068
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