VISCOUS OSCILLATORY FLOWS AROUND CYLINDRICAL BODIES AT LOW KEULEGAN-CARPENTER NUMBERS USING THE VORTEX METHOD

被引：33
作者：
SMITH, PA
STANSBY, PK
机构：
[1] Department of Engineering, University of Manchester Manchester, M13 9PL, Simon Building
来源：
JOURNAL OF FLUIDS AND STRUCTURES | 1991年 / 5卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1016/0889-9746(91)90405-E
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The random-vortex method (incorporating the vortex-in-cell method and numerical conformal transformation) has been used to compute two-dimensional viscous oscillatory flows around cylindrical bodies of various shapes, including circular and square cross-sections. Reynolds numbers are chosen to allow comparison with experimental measurements of drag and inertia coefficients and Keulegan-Carpenter numbers are restricted to values below 3. The variation of drag coefficient with Keulegan-Carpenter number is related to the vortical structures; in particular the minimum drag coefficient for the circular cylinder is explained. Comparisons of the force coefficients are also made with attached flow theory and discrete-vortex analyses for sharp-edged cylinders. © 1991 Academic Press Limited.
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页码：339 / 361
页数：23
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