直升机典型城区环境流场计算与试验  

Numerical Simulation and Experimental Research on Helicopter Typical Urban Area Flow-Field

作　　者：孙伟 孙朋朋 林永峰 

机构地区：[1]中航工业直升机设计研究所,景德镇333001

出　　处：《南京航空航天大学学报》2016年第2期218-223,共6页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：首先,针对典型城区模型,在黏性非结构直角网格上求解了三维Navier-Stokes(N-S)方程,并通过数值模拟计算了典型城区环境流场。其次,采用粒子图像测速(Particle image velocimetry,PIV)技术开展了城区流场测量试验研究。最后,通过对比试验与计算结果分析了典型城区流场特性。Firstly, the numerical simulations for the flow-field of typical urban area models are carried out by solving 3-D Navier-Stokes（N-S） equations based on viscous unstructured Cartesian grid. Secondly, the flow-field of typical urban area is measured by using the particle image velocimetry（PIV）. Finally, comparisons between testing results and numerical calculation results are conducted to analyze the char- acteristics of typical urban area flow-field.

关 键 词：城区流场 直角网格 N-S方程 粒子图像测速 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]