NUMERICAL SIMULATION OF DRAG REDUCTION CAUSED BY PATTERNED WALL |
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| Authors: | YANG Xiaofeng CHEN Yanyan |
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| Institution: | 1.Electromechanical and Informational Institute, Yiwu Industrial and Commercial College, Zhejiang, Yiwu 322000, China;2.Physics Department, Zhejiang Normal University, Zhejiang, Jinhua 321004, China |
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| Abstract: | A lattice Boltzmann method with the use of an interaction potential between neighboring lattice particles is applied to simulate the fluid flow in a 2-D wall-patterned pipe. The simulation results indicate that the surface wettability, the surface roughness, the pressure and the fluid viscosity are the factors dominating the liquid-solid slip. The friction is reduced in the wall-patterned pipe under a low pressure. The simulation results can explain the existence of a threshold pressure gradient in mining underground reservoirs as well. |
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| Keywords: | dewetting|lattice Boltzmann method|drag reduction |
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