A proposed near-wall (t(2)) over bar-epsilon (t) two-equation model for tur
bulent heat transport reproduces the correct near-wall behavior of temperat
ure under various wall thermal boundary conditions. In this model, a mixing
timescale is introduced to model the production term of epsilon (t) equati
on, and a more convenient boundary condition for epsilon (t) under the unif
orm wall heat flux is suggested. The present model is tasted through applic
ation to turbulent heat transfer for channel flow. Predicted results are co
mpared with direct numerical simulation (DNS) data. The near-wall (t(2)) ov
er bar-epsilon (t) two-equation model predicts reasonably well the distribu
tions of the time-mean temperature. normal turbulent heat flux, temperature
variance, dissipation rate and their near-wall budgets. (C) 2001 Elsevier
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