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������, ���廪*
�������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100083
Three dimensional turbulence numerical simulation of rotor in forward flight
Yu Ziwen, Cao Yihua*
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ ���ü���������ѧCFD(Computational Fluid Dynamics)����,��������ǰ�ɺͽ���ǰ��ʱֱ����������������.��ֱ������ϵ��,���������������ѹ����Ϸ��̵İ���ʽ��SIMPLER(Semi-Implicit Method for Pressure-Linked Equations Revised)�㷨�����ά��������ѹ������N-S(Navier-Stokes)����.�ڷ�����,��ת���ݽ����������ݽ���Ҷչ��ֲ����뱾��������������Լ�ʱ��ƽ���Ķ���Դ��.���㷽����������K-ε������ģ�ͺͱ��溯�����ȴ�ʩ.��������������Ԥ��ͬʵ��������ݵ����õ�һ���Ա���,����CFD����������Ч�ķ���ֱ�����ľ����������.
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Abstract�� The flow field and performance of a helicopter in common forward flight and forward flight near the ground were analyzed using CFD (computational fluid dynamics) technique. The general governing equations of turbulent flow were set up, and were directly solved by finite volume method and SIMPLER (semi-implicit method for pressure-linked equations revised) approach in Cartesian coordinates. The spinning rotor was represented as time-averaged momentum source terms distributed along the span of the rotor with functional relationship to the local flow conditions in N-S(Navier-Stokes) equations. ��K-� turbulence model and wall function method were included in the calculation method. The calculated results for flow field and performance correlation show good agreement with the measured data. Therefore, the numerical simulation technique is proved to be feasible for analyzing design issues of a helicopter.
Keywords�� turbulent flow   numerical analysis   momentum source term   wall function     
Received 2005-08-19;
About author: ������(1977-),��,���������������,��ʿ��, zhaoliqie@163.com.
������, ���廪.ǰ��������ά����������ֵģ��[J]  �������պ����ѧѧ��, 2006,V32(07): 751-755
Yu Ziwen, Cao Yihua.Three dimensional turbulence numerical simulation of rotor in forward flight[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(07): 751-755
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2006/V32/I07/751
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