【摘要】 本文叙述了广东茂名热电厂双曲线型自然通风冷却塔风压分布的风洞实验和全尺寸测量结果。该塔高90米,无塔肋。风洞实验给出了在均匀气流和大气边界层气流中,不同雷诺数和塔面集中粗糙度时的平均风压分布。全尺寸测量给出了雷诺数约为5.4×10~7时无肋塔内外壁面的平均风压分布。文中还讨论了风洞实验时模型表面适当布置粗糙度,可使低雷诺数时的实验结果应用于大雷诺数的问题。更多还原

【Abstract】 This paper describes the wind-tunnel model testing and full-scale measuremet on a 90 meters high,ribless hyperbolic natural draft cooling tower in Mao-min Power Station,Guang-dong,China.Wind-tunnel tests give the mean pressure distribution on external surface both in uniform flow and in atmospheric boundary layer flow for different Reynolds Numbers (Re) and different surface roughnesses.Full-scale measurement gives the mean pressure coefficients at Re≈5.4×107 with minimum pressure of-1.47,as well as the pressures on internal surface.These results are compared.The paper also discusses the possibility of yielding larger Re results by increasing the surface roughness in wind-tunnel testing at smaller Re.更多还原