螺旋桨非定常滑流的高效数值模拟研究  

Numerical simulation of unsteady propeller slipstream

作　　者：杨小川[1] 王运涛[1] 王光学[1] 张玉伦[1] 

机构地区：[1]中国空气动力研究与发展中心空气动力学国家重点实验室,绵阳621000

出　　处：《空气动力学学报》2014年第3期289-294,共6页Acta Aerodynamica Sinica

基　　金：国家重点基础研究发展计划(973计划)(2009CB723805)

摘　　要：基于自主研发的大型"亚跨超CFD软件平台"(TRIP3.0),开发了针对螺旋桨飞机的旋转机械非定常求解模块。控制方程采用曲线坐标系下的非定常Euler方程,综合运用动态拼接结构网格技术和双时间步推进方法,重点模拟了双发螺旋桨飞机在螺旋桨转动时的非定常滑流效应。为了保证计算模拟的高效性,引入多重网格技术和大规模并行计算技术。通过模拟某单独螺旋桨验证算例,验证了该方法的可行性。模拟了不同迎角和螺旋桨转速下全机的气动特性,分析了滑流对流场的影响情况,结果表明:螺旋桨滑流对全机流场和气动特性影响明显,并使得升力系数增大。Based on TRIsonic Platform version 3.0（TRIP3.0）,a CFD software trip developed by China Aerodynamic Research and Develop Center,a module of three-dimensional unsteady Euler equations for a rotating machinery is developed and applied to simulate the unsteady slipstream with a propeller.In this mod-ule,dynamic structured cross grid and dual-time method are used.Furthermore,massive parallel computation and multi-grid technology are adopted to decrease the computation cost.The effectiveness of this unsteady Euler solver is validated by the calculation of the thrust and the torque of a single propeller.The comparison with experimental data is presented.Finally,the aerodynamic characteristics of a turboprop aircraft are cal-culated with the focuse on especially the influence of unsteady aerodynamic effect.The results show that the lift coefficient increases significantly by the unsteady slipstream.The influence of angles of attack and rota-tional speeds are discussed,and the vortex of propeller in the flow-field is also analyzed.This work indicates that our developed three-dimensional unsteady Euler module simulates the flow field of rotating machinery rapidly,practically and efficiently.The results based on this method are close to the experimental data.

关 键 词：螺旋桨滑流 非定常模拟 TRIP30 拼接网格 数值模拟 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]