【摘要】 通过风洞试验研究了不同表面粗糙度、不同雷诺数条件下二维圆柱的压力分布和阻力特性。结果表明:通过合理地增大表面粗糙度,在相对较低的风速下有效地模拟了圆柱的超临界绕流特性,满足了工程应用对超临界雷诺数的要求。更多还原

【Abstract】 The pressure distribution on a circular cylinder surface in three surface roughness conditions was measured. The flow around the cylinder and aerodynamic force were studied. The results show that increasing surface roughness of cylinder makes a higher Reynolds number and thus it is effective to simulate supercritical flow around circular cylinder at a relatively low wind speed. It is concluded that increasing surface roughness is useful in wind tunnel load test simulating cylindrical structures in supercritical flow at relatively low Reynolds numbers.更多还原