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�������պ����ѧѧ�� 2008, Vol. 34 Issue (11) :1284-1287    DOI:
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Numerical simulation of heat transfer in rotating smooth square ducts using modified ��k-ω�� turbulence model
Tao Zhi, Xu Xueliang, Deng Hongwu, Zhu Jianqin*
National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ �����ת�⻬����ͨ���ֱ�Ӧ�������ת״̬������ k-ε����׼k-ω�Լ�����������ת״̬������k-ω����ģ�ͽ��������ͻ��ȵ���ֵģ��,ͨ����ʵ����۵ĶԱ�,�����˲��ò�ͬ����ģ�ͶԼ�������Ӱ��.���㹤��Ϊ��ת��Ro=0.24,���������ŵ��Re=25�E000.����������:����������������ת״̬������k-ω����ģ�͵ļ�����Ҫ�Ȳ��������ת״̬������k-ε�Լ���׼k-ω����ģ�͵ļ��������ӽ�ʵ�����.
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Abstract�� A three-dimensional Navier-Stokes code with modified ��k-ε,k-ω��(with new terms for Coriolis and rotational buoyancy) and standard ��k-ω�� turbulence models were used for prediction of flow and heat transfer characteristics for a rotating smooth square channel with radially outward flow. Comparisons between the calculation results of using different turbulence models were made with experimental data, test case is the rotation number(based on the inlet velocity and rotation speed) Ro =0.24; Reynolds number(based on the inlet velocity) Re =25�E000. The numerical results reveal that the heat transfer predictions have great discrepancy by using different turbulence models. For the present test case, the numerical results of using modified ��k-ω�� turbulence model give predictions that are in better agreement with the experimental data than using modified ��k-ε�� turbulence model and standard ��k-ω�� turbulence model.
Keywords�� rotation   turbulence model   heat transfer     
Received 2007-12-16;
About author: �� ��(1963-),��,�����߷�����,����,tao_zhi@buaa.edu.cn.
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�� ��, ��ѧ��, �˺���, �콣��.Ӧ����������ģ�Ͷ���תͨ���ڻ��ȵ�ģ��[J]  �������պ����ѧѧ��, 2008,V34(11): 1284-1287
Tao Zhi, Xu Xueliang, Deng Hongwu, Zhu Jianqin.Numerical simulation of heat transfer in rotating smooth square ducts using modified ��k-ω�� turbulence model[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(11): 1284-1287
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