抄録
The dissimilarity between momentum and heat transfer was investigated numerically in a 2-D channel flow, in which turbulent mixing is exclusively dependent on the transverse vortex motion. Since the Reynolds stress can be suppressed by the effect of wall-normal velocity and pressure gradient fluctuation correlation, the dissimilarity is remarkably enhanced in 2-D channel flow. Here in this report, the time history of dissimilarity strength in Lagrangian path of fluid particle was considered from numerical results of 2-D flow. The results showed that the strength of dissimilarity is closely related to the above mentioned correlation through the vortex motion in the flow field.
