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�������պ����ѧѧ�� 2006, Vol. 32 Issue (01) :13-17    DOI:
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Three-point step-by-step generating r-type adaptive grid technique
Chen Xuanyou, Dong Haitao, Lee Chunhian, Zhou Yue*
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� In order to distribute grids correctly according to certain flow parameter grads but not to increase grid number, a step-by-step generating technique for r-type three points adaptive grid was proposed based on an averaged total variation concept. By this method, the grid location could be gradually adjusted, and the adaptive grid quality could be improved and grid thread distortion could be decreased. Two test cases were given to demonstrate the effectiveness of the developed procedure, namely, the supersonic flows over a two dimensions circular cylinder and a three dimensions double ellipsoid using an Euler solver. Grid location in the two test cases was adjusted by total variation of pressure. By comparing with the results computed using original grids, it is observed that shock wave captured by adaptive grids becomes thinner, so the results obtained by the present technique do provide higher resolution.
Keywords�� adaptive algorithms   grid   shock wave     
Received 2004-11-12;
About author: ������(1974-),��,����������,˶ʿ��, cxyou503@hotmail.com.
������, ������, ���, ��Խ.3����r������Ӧ�����㷨[J]  �������պ����ѧѧ��, 2006,V32(01): 13-17
Chen Xuanyou, Dong Haitao, Lee Chunhian, Zhou Yue.Three-point step-by-step generating r-type adaptive grid technique[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(01): 13-17
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