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�������պ����ѧѧ�� 2010, Vol. 36 Issue (1) :87-90    DOI:
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Numerical simulation of a swept backward-facing step flow
Jiang Lijun, Gao Ge, Zhang Changxian*
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �����˿�Դ����������ѧ���OpenFOAM(Open Field Operation and Manipulation)����������̼���,�����������άб�Ӻ�̨��������������ֵģ��.ͨ������б�ӽǶ��������OpenFOAM����õ��������ٶ��ͺ�չ����ǿ�ȳ��ֲ���ʵ�����ݵĶԱ��о�,֤����������õļ��㾫�ȺͿɿ���.ͨ���Բ�ͬб�ӽǶ�̨������������ѹ���ֲ�����ϸ�о���������б�ӽǶȴ�0°���ӵ�60°,���������Žṹ���ٸ�����������������仯.�������������ٸ�������30°��ἱ����С,����ǿ��Ҳ�����.
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Abstract�� 3-dimensional separated and reattaching flow over a swept backwark-facing step of height ��h�� at ��Re��=28��000 with turbulent upstream conditions was studied for sweep angles up to Λ = 60° using open field operation and manipulation (OpenFOAM). This new open source software was validated by comparison with experimental data, special attention is focus on the 0° condition. Velocity profile, vortex structure, and pressure distribution were released. The results show that the reattachment length and vortex structure vary with the swept angles from Λ =0° to 60°. Generally the reattachment length and spanwise vorticity decrease dramatically after Λ =30°. Object-orientation techniques and the open source computational fluid dynamics(CFD) package named OpenFOAM are also introduced.
Keywords�� computational fluid dynamics   turbulence flow   vortex structure   object-orientation programming     
Received 2008-12-19;
About author: ������(1982- ),��,���ϳ�����,��ʿ��,jiang0604102@126.com.
������, �� ��, �ų���.��άб�Ӻ�̨��������ֵģ��[J]  �������պ����ѧѧ��, 2010,V36(1): 87-90
Jiang Lijun, Gao Ge, Zhang Changxian.Numerical simulation of a swept backward-facing step flow[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(1): 87-90
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