一种涵道螺旋桨性能预测的CFD方法

为适应高性能涵道螺旋浆精细化设计需求，基于雷诺平均Navier—Stokes控制方程和非结构网格旋转／静止滑移面技术，开展了涵道与螺旋桨动／静部件干扰的非定常流及性能预测数值模拟方法研究。提出了．静止与旋转域的多块网格布局策略及转／静滑移面技术，研究了涵道壁而与螺旋桨桨梢间隙的网格布局形式，有效解决了螺旋桨旋转流及螺旋...

Performance Prediction of Ducted Propeller Based on CFD Method

To meet the needs of the sophisticated design of ducted propeller, based on the Navier-Stokes equations and the sliding patched-zone interface technology, combined with the technology of the unstructured grid generation, the aerodynamic analysis of the unsteady stator/rotor interacting flow and the performance predic- tion of a ducted propeller are carried out in this paper. Based on sliding patched-zone interface technology, the multi-block grid which includes static and rotating domain is proposed. The grid distribution of the clearance between the propeller blade tip and the duct wall is studied. On this basis, the aerodynamic analysis of a propeller flow and a ducted propeller interacting flow are implemented. Finally, the numerical simulating results of the propeller and the ducted propeller are in good agreement to the experimental results and the design specifications, which means the CFD analysis developed in this paper is useful and effective.