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�������պ����ѧѧ�� 2012, Vol. Issue (2) :175-179,190    DOI:
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���������Ƶ�Baldwin-Lomax����ģ��
����, �ֳ�, �ڽ�*
�������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100191
New kind Baldwin-Lomax turbulence model under the limit of entropy
Zhao Rui, Yan Chao, Yu Jian*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ���Baldwin-Lomax(BL)ģ����ģ�ⳬ���ٸ��������еIJ���,���һ�ֻ��������Ƶ�����������ʽ.�ֱ����ԭʼ��BLģ��(BL-origin)���������BLģ��(BL-entropy)�Լ�Wilcox k-��������ģ�ͶԳ�����ƽ�塢�����ٶ�άѹ���ս��Լ�����-ѹ���ս�3�������������м���,�������BL-entropy �ܹ��Ϻõػ�ȡ���ȳ߶Ƚ����õ����Ⱥ������ճ�Էֲ�.ͬʱ,��������ʽ�򵥸�Ч���������������볬���ٱ߽���йص�ģ��,���нϴ�ķ�չDZ��.
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Abstract�� A new kind correction to Baldwin-Lomax turbulence model (BL-entropy) based on the concept of entropy was proposed. The supersonic plane, two-dimensional supersonic compression corner and expansion-compression corner which were representative in the engineering area were chosen in the numerical simulation to evaluate the performance of this model. It is found that BL-entropy can conquer the essential deficiency of the original model by providing a more physically correct length scale in the supersonic complex flow. Moreover, this method is simple, computationally fast and general, making it applicable to other models related with the supersonic boundary layer.
Keywords�� turbulence models   entropy   supersonic flows   computational fluid dynamics     
Received 2010-11-12;
Fund:����973�ƻ�������Ŀ(2009CB724104)
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����, �ֳ�, �ڽ�.���������Ƶ�Baldwin-Lomax����ģ��[J]  �������պ����ѧѧ��, 2012,V(2): 175-179,190
Zhao Rui, Yan Chao, Yu Jian.New kind Baldwin-Lomax turbulence model under the limit of entropy[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V(2): 175-179,190
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