PERIODIC BOUNDARY CONDITION IN SIMULATION OF TURBULENT FLOW  

作　　者：Zhou, Xiao-Quan  Cao, Shu-You  Qu, Lun-Fu  Wu, Yu-Lin 

机构地区：[1] Hydraulics Lab. of High Speed Flows, Sichuan Univ., Chengdu 610065, China [2] Dept. of Thermal Eng., Tsinghua Univ., Beijing 100084, China

出　　处：《Journal of Hydrodynamics》2002年第3期111-116,共6页水动力学研究与进展B辑（英文版）

摘　　要：The simulations of the three-dimensional turbulent flows through hydraulic turbine components[1] were conducted based on the standard k-Ε turbulent model with body-fitted coordinates and staggering grid system. The SIMPLEC algorithm was adopted in the numerical procedure. A new method to treat the periodic boundary condition was used. The calculated results of the new method were compared with those of traditional ones. These results indicate that the new method can give much better results, and can be used in simulating flow through rotational impellers. The presented method can be combined with alternative turbulent model or employed in large eddy simulation.The simulations of the three-dimensional turbulent flows through hydraulic turbine components[1] were conducted based on the standard k-Ε turbulent model with body-fitted coordinates and staggering grid system. The SIMPLEC algorithm was adopted in the numerical procedure. A new method to treat the periodic boundary condition was used. The calculated results of the new method were compared with those of traditional ones. These results indicate that the new method can give much better results, and can be used in simulating flow through rotational impellers. The presented method can be combined with alternative turbulent model or employed in large eddy simulation.

关 键 词：Computer simulation Hydraulic turbines IMPELLERS Three dimensional Time varying systems 

分 类 号：O357.5[理学—流体力学]