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Drag reduction by linear viscosity model in turbulent channel flow of polymer solution |
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| Authors: | WU Gui-fen LI Chang-feng HUANG Dong-sheng ZHAO Zuo-guang FENG Xiao-dong WANG Rui |
| Affiliation: | WU Gui-fen1,LI Chang-feng1,HUANG Dong-sheng2,ZHAO Zuo-guang1,FENG Xiao-dong1,WANG Rui1(1.School of Energy , Power Engineering,Jiangsu University,Zhenjiang 212013,China,2.Shanghai Maple Automobile Co.Ltd,Shanghai 201501,China) |
| Abstract: | A further numerical study of the theory that the drag reduction in the turbulence is related to the viscosity profile growing linearly with the distance from the wall was performed.The constant viscosity in the Navier-Stokes equations was replaced using this viscosity model.Some drag reduction characteristics were shown comparing with Virk's phenomenology.The mean velocity and Reynolds stress profiles are consistent with the experimental and direct numerical simulation results.A drag reduction level of 45% ... |
| Keywords: | turbulence drag reduction viscosity profile polymers velocity Reynolds stress |
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