THE EFFECT OF WALL TEMPERATURE ON THE COHERENT STRUCTURE IN WALL TURBULENCE

In this paper, two conditional sampling techniques,VITA and mu-level algorithms were used to investigate the wall temperature influence on turbulence coherent structure in heated wall. ``Grouped'' method proposed by Tiederman et al. was improved, and the advanced ``Grouped'' method was used with VITA and mu-level technique in analizing the effects caused bywall heating on average bursting period. Experiments indicate that the U rms and detected results of conditional sampling method increase, but aver...