Numerical research of flow past a circular cylinder with a splitter at the subcritical Reynolds number
region of 5 × 104—9 × 104 was researched based on Computational Fluid Dynamics (CFD) through solving twodimensional
incompressible unsteady Reynolds-averaged Navier-Stokes (URANS) equations with the shear stress
transport (SST) k-ω turbulence model. Three different grid resolutions were employed in the verification and
validation study of the adopted turbulence model. Various fluid characteristics such as Strouhal number, lift
coefficient of the cylinder and the splitter with respect to various splitter lengths and different Reynolds numbers
were investigated. It was revealed that the lift coefficient ratio of the splitter over the cylinder remains near 1.6
when the splitter length is 1.5—4 times the cylinder’s diameter. Vortex shedding is strongly inhibited when the
splitter length is greater than a critical value of around four times the cylinder’s diameter. The phase difference
of the lift coefficient on the upper and lower surface of the splitter varies between ?30? and 30?. The maximal
lift coefficients are reached when the splitter length is about 2 times the cylinder’s diameter. Besides, the splitter
length has little influence on the separation angle around the cylinder.
AN Xinyu *(安新宇), SONG Baowei (宋保维), TIAN Wenlong (田文龙), MA Congcong (马聪聪)
. Numerical Research of Flow past a Circular Cylinder with Splitter Plate at a Subcritical Reynolds Number Region[J]. Journal of Shanghai Jiaotong University(Science), 2019
, 24(1)
: 113
-121
.
DOI: 10.1007/s12204-019-2045-y
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