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.
XING Ling-hang1 (刑领航), YAN Ming2 (严明), HUANG Guo-bing1 (黄国兵), LI Fei3 (李飞), TANG Wen-jian4 (唐文坚)
. Modified QUICK Schemes for 3D Advection-Diffusion Equation of
Pollutants on Unstructured Grids[J]. Journal of Shanghai Jiaotong University(Science), 2012
, 17(4)
: 484
-489
.
DOI: 10.1007/s12204-012-1310-0
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