螺旋桨滑流非定常数值模拟与影响研究

摘要

基于滑移网格技术,建立实现非定常数值模拟方法,捕捉模拟螺旋桨滑流特征,分析研究滑流对全机气动特性的影响.对滑移网格技术及基于该技术的非定常数值模拟方法进行了全面详细的介绍,在此基础上重点对某螺旋桨飞机巡航状态的流场特性进行计算分析,深入研究螺旋桨滑流对全机流场和气动性能的影响.研究结果表明:基于滑移网格技术建立的螺旋桨滑流非定常数值模拟方法,可以真实有效地模拟螺旋桨滑流特性,可大大简化动静网格的数据交换,该方法是螺旋桨飞机设计评估的一种有效数值模拟手段,在工程方面具有一定的实用价值.%The article simulate the characteristics of propeller slipstream and study the effect of propeller slipstream on the aerodynamic characteristics with the unsteady method,which based on sliding mesh technology.Firstly,the sliding mesh technology is introduced detailedly.Secondly,the unsteady method is presented generally.Lastly,the effects of propeller slipstream on the characteristics of the flow field and aerodynamic are analyzed,depending on cruise model propeller-driven aircraft.The results show that the flow field of the slipstream can be simulated effectively by the unsteady numerical method based on the sliding mesh technology.This method can simplify the frequency of the interpolation information exchange.This study provides a valid numerical simulation method for propeller-driven aircraft design and possesses higher utility value in engineering.