较低雷诺数零升阻力估算方法研究

摘要

根据层流和湍流的摩擦阻力估算公式,建立较低雷诺教条件下当量摩擦阻力系数的计算模型来估算零升阻力系数.通过对估算方法进行验证和分析,研究较低雷诺数时零升阻力系数随雷诺数的变化趋势.结果表明,建立的估算方法合理,并且准确地反映了零升阻力系数在较大雷诺数范围内的变化规律.%According to the estimation formula of the laminar and turbulent frictional drag,establish the calculation model of the equivalent frictional drag coefficient to estimate zero- lift drag coefficient at lower Reynolds number. Through verifying and analysing the estimation method, research the trend that the zero - lift drag coefficient varies with Reynolds number at lower Reynolds number. The result shows that the estimation established method is reasonable, and this method accurately reflects the regular pattern that the zero- lift drag coefficient varies in larger Reynolds number range.