首页|Modified QUICK Schemes for 3D Advection-Diffusion Equation of Pollutants on Unstructured Grids

Modified QUICK Schemes for 3D Advection-Diffusion Equation of Pollutants on Unstructured Grids

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In the framework of finite volume method(FVM),two modified schemes of quadratic upstream interpolation for convective kinematics(QUICK),namely quasi-QUICK(Q-QUICK)and normal quasi-QUICK (NQ-QUICK),for improving the precision of convective flux approximation are verified in 3D unsteady advectiondiffusion equation of pollutants on unstructured grids.The constructed auxiliary nodes for Q-QUICK or NQQUICK are composed of two neighboring nodes plus the next upwind node; the later node is generated from intersection of the line of current neighboring nodes and their corresponding interfaces.The numerical results show that Q-QUICK and NQ-QUICK overwhelm central differencing scheme(CDS)in computational accuracy and behave similar numerical stability to upwind difference scheme(UDS),hybrid differencing scheme(HDS)and power difference scheme(PDS)after applying the deferred correction method.Their corresponding CPU time is approximately equivalent to that of traditional difference schemes.In addition,their abilities for adapting high grid deformation are robust.It is so promising to apply the suggested schemes to simulate pollutant transportation on arbitrary 3D natural boundary in the hydraulic or environmental engineering.

3D unstructured gridsquadratic upstream interpolation for convective kinematics(Q-QUICK)normal quasi-QUICK(NQ-QUICK)finite volume method(FVM)

XING Ling-hang、YAN Ming、HUANG Guo-bing、LI Fei、TANG Wen-jian

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Hydraulic Research Institute, Changjiang River Scientific Research Institute, Wuhan 430010, China

College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China

Planning Projects Agency,Changjiang Water Resources Commission, Wuhan 430010, China

International Science and Technology Cooperation Bureau, Changjiang Water Resources Commission, Wuhan 430010, China

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National Public Research Institutes for Basic Research and Development Operating Expenses Special ProjectNational Public Research Institutes for Basic Research and Development Operating Expenses Special ProjectNational Public Research Institutes for Basic Research and Development Operating Expenses Special ProjectNational Public Research Institutes for Basic Research and Development Operating Expenses Special ProjectNational Basic Research Program (973) of China

CKSF2010014/SLYWF0905CKSF2010011CKSF2012008/SL2007CB714106

2012

10.1007/sl2204-012-1310-0

上海交通大学学报(英文版)
上海交通大学

上海交通大学学报(英文版)

EI
影响因子：0.151
ISSN：1007-1172
年,卷(期)：2012.17(4)
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