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�������պ����ѧѧ�� 2005, Vol. 31 Issue (02) :206-211    DOI:
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Numerical simulation of the 3-D unsteady flow in the last stage of the steam turbine
Qi Lei, Zheng Ning, Cheng Honggui*
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� Air cooling steam turbine uses air as working fluid, and it works in variable-operating condition. It is important for the design of air cooling steam turbine and the performance and stability of turbine to study unsteady flow mechanism in design and off-design state. The flow of turbine in design and off-design state was simulated by the method of numerical simulation of 3-D viscous flow, and the flow mechanism in design and off-design state was studed. The results show rotor-stator interaction causes unsteady flow in design state, and the rotor-stator interaction in off-design state is weak, the unsteady phenomena is not obvious in off-design state.
Keywords�� turbine   unsteady flow   rotor-stator interaction     
Received 2004-06-20;
About author: �� ��(1981-),Ů,����������,��ʿ��, qileil@126.com.
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����, ֣��, �̺��.���ֻ�ĩ����ά�Ƕ���������ֵģ��[J]  �������պ����ѧѧ��, 2005,V31(02): 206-211
Qi Lei, Zheng Ning, Cheng Honggui.Numerical simulation of the 3-D unsteady flow in the last stage of the steam turbine[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(02): 206-211
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