三維驅動拉板之空穴使用平行化的多級預處理疊代的壓力波松求解器

A parallel multilevel preconditioned iterative pressure Poisson solver for 3D lid-driven cavity

張沐恩

指導教授 ： 林昭安

國立清華大學/工學院/動力機械工程學系/碩士(2013年)

摘要

In the present study, the software of Portable, Extensible Toolkit for Scientific (PETSc) Computation associated with a parallel multilevel iterative solver is embedded in our LES program to enhance the capability of computational power for the three dimensional turbulent flows. The three-dimensional Poiseuille, Couette and lid-driven cavity are conducted for the examination of numerical accuracy at laminar flows. For the moderate Reynolds number, the turbulent Poiseuille flow inside the square duct is simulated for the verification of turbulent model. The results show that the both velocity profiles and turbulence intensities are in line with the benchmark. Moreover, the downstream flow of primary eddy would be enhanced by the fast moving wall. However, as Reynolds number increases higher than 1,000, the location of primary eddy is saturated. Also, the secondary eddies increasing with Reynolds number is confirmed by the present study.

關鍵字

拉板 ； 平行化 ； 多級處理 ； 壓力波松 ； 紊流

並列摘要

無資料

並列關鍵字

lid ； parallel ； multilevel ； Poisson ； turbulence

參考文獻

Chao-An Lin, A parallel multilevel preconditioned iterative pressure Poisson

solver for the large-eddy simulation of turbulent flow inside a duct. Computers

(1982) 387-411.

[3] R. Schreiberm H. B. Keller, Driven cavity flows by efficient numerical

techniques, J. Comput. Phys. 49 (1983) 310-333.