Effect of the spanwise grid spacing and treatment of convection term in DES

Title & Authors
Effect of the spanwise grid spacing and treatment of convection term in DES
Song, Chi-Su; Park, Seung-O;

Abstract
A two-dimensional backward facing step flow was comptuted using a Detached Eddy simulation(DES) based on the SST turbulence model. The expansion ratio(ER) was 1.125 and the Reynolds number based on the step height and the mean velocity in the upstream channel was 37,500. The flow condition was the same as with the experimental research[1]. The reattachment length, oscillatory characteristics of the flow and the coherent structures of the present simulation were compared to demonstrate the improtance of spanwise grid spacing.ĀȀ會ĀȀ肔ﾖ⨀죇䆩ఀĀ搀會Ā搀�ﾖ⨀䡼璯ĀĀĀ會ĀĀゕﾖ⨀ĀĀĀ會ĀĀ袕ﾖ⨀璯ЀĀЀ會ĀЀﾖ⨀즲ЀĀ؀會Ā؀㢖ﾖ⨀蠻즲ࠀĀࠀ會Āࠀ邖ﾖ⨀瀕뺔ऀĀ᐀會Ā᐀ﾖ⨀倄솬᐀Ā저會Ā저䂗ﾖ⨀‼즲ഀĀ᐀會Ā᐀颗ﾖ⨀碱ⲡഀĀ᐀會Ā᐀ﾖ⨀㠓�瀀ꀏ會Ā䢘ﾖ⨀瀕뺔ऀĀ
Keywords
Two-dimensional backward facing step flow ; Hybrid RANS/LES ; DEtached Eddy Simulation ; Spanwise grid spacing
Language
English
Cited by
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