A new constitutive equation of Reynolds stress

摘要：

A non-linear composition of vorticity tensor which is symmetrical and whose trace is zero is added to the constitutive relation between Reynolds stress and time-averaged quantities of flow field, and a new constitutive equation of Reynolds stress is given. For the turbulent flows in a straight pipe with square cross section and in a straight pipe with circular cross section, the theoretical calculation results indicate that the new constitutive equation of Reynolds stress can properly predict the existence of secondary flow and significantly improve the predictions in terms of Reynolds normal stresses and their anisotropy.

作者: Q.Y.Chen H.G.Kang

作者单位: State KeyLab of Coastal and Offshore Eng., Dalian Univ.of Technol.,Dalian 116024, China;Department o State KeyLab of Coastal and Offshore Eng., Dalian Univ.of Technol.,Dalian 116024, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）