Unsteady Simulations of Propeller Flows Based on Dynamic Patched-Grid

摘要：

Unsteady simulations of propeller flows are conducted usingthe Reynolds averaged Navier-Stokes (RANS) approach based on dynamic patched-grid. Patched-grid interpolation coefficients across the interface are recreated at every physical time step. A series of simulations are performed with different advance ratios fromλ =0.6 toλ =1.6 at two angles of attack of α =0° and α=10°. The thrust coefficients and power coefficients at different advance ratios agree with the experimental data. Specific analysis on the propeller wake flow and forces acting on the blades with advance ratio of λ = 1. 1 are taken. The magnitudes of time accurate axial velocities in propeller wake flow present unsteady fluctuations as the blade wake pass periodically, while the fluctuations decrease downstream. Additionally, developments of force and momentum acting on one blade in a propeller revolution are influenced strongly by the angle of attack.

关键词： propeller unsteady flow dynamic patched grid

作者: Xia Zhenfeng Yang Yong Jiao Jin

作者单位: National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University.Xian 710072, China

会议类型: 国际会议

会议名称: 2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)

会议地点: 西安

会议语种:英文

页码: 420-423

在线出版日期: 2010-09-01（万方平台首次上网日期，不代表论文的发表时间）