NUMERICAL ANALYSIS OF THE EFFECT OF MASS INJECTION OR SUCTION ON DRAG COEFFICIENTS OF A SPHERE
NUMERICAL ANALYSIS OF THE EFFECT OF MASS INJECTION OR SUCTION ON DRAG COEFFICIENTS OF A SPHERE
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质量注入或吸力对球体阻力系数影响的数值分析
DOI：
10.1252/jcej.16.18
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发表时间：
1983
影响因子：
0.8
通讯作者：
K. Asano
中科院分区：
文献类型：
--
作者：
Pailin Chuchottaworn;Akira Fujinami;K. Asano
采用有限差分方法，在雷诺数为1~200，喷吸比为-0.2~0.5的条件下，数值求解了均匀质量喷注或吸力作用下球体绕流的Navier-Stokes方程。在没有质量注入的情况下，预测的阻力系数与前人的结果吻合较好。在中低雷诺数范围内，研究了均匀质量喷射或抽吸对球体周围流场的影响，以及对壁面阻力和形状阻力的影响。本文提出了一种新的固体球体阻力系数与质量注入或吸力影响的关联式。
The Navier-Stokes equation for a flow around a sphere with and without uniform mass injection or suction was solved numerically by a finite difference method for Reynolds numbers from 1 to 200 and injection or suction ratios from - 0.2 to 0.5. The predicted drag coefficients for the case without mass injection showed good agreement with the results of previous workers. The effects of uniform mass injection or suction on flow field around a sphere and on skin friction drag and form drag were investigated for low to intermediate Reynolds number ranges. A new correlation for the effects of mass injection or suction on drag coefficients of a solid sphere is proposed.