A METHOD FOR VISCOUS INCOMPRESSIBLE FLOWS WITH A SIMPLIFIED COLLOCATED GRID SYSTEM

Nie, J.H.; Li, Zeng-Yao; Wang, Qiuwang; Tao, Wen-Quan

Proceedings of Symposium on Energy Engineering in the 21^st Century (SEE2000) Volume I-IV

ISBN Druckformat: 1-56700-132-7

A METHOD FOR VISCOUS INCOMPRESSIBLE FLOWS WITH A SIMPLIFIED COLLOCATED GRID SYSTEM

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J.H. Nie School of Energy and Power Engineering, Xi'an Jiaotong University Xi'an, Shaanxi 710049, P. R. China

Zeng-Yao Li Key Laboratory of Thermo-Fluid and Science and Engineering, Ministry of Education School of Energy and Power Engineering, Xi'an Jiaotong University No. 28 West Xianning Road, Xi'an, Shaanxi, 710049, China

Qiuwang Wang Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China

Wen-Quan Tao State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China; International Joint Research Laboratory of Thermal Engineering, Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xian Jiaotong University, Xi'an 710049, China

Abstrakt

A simplified version of collocated grid system is proposed, which is characterized by adopting the momentum interpolation only for the discretization of mass conservation equation, while the interface velocity used for determining the discretization coefficient is obtained by linear interpolation. To eliminate the effect of the underrelaxation factor on the numerical results, it is suggested that the value of the underrelaxation factor resume to 1 in the computation of momentum interpolation. Three cases are computed and the results are compared with the existing literature, showing the feasibility of the proposed methods.

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