Abstract
The objective of this study is to investigate an entrance region of thermal field in turbulent flow having various wall thermal conditions, thermal stratifications and pressure gradients via direct numerical simulation (DNS), in which both the internal and the external turbulent flows are carried out. In this study, DNS clearly provides distributions of local Nusselt and Standton numbers in an entrance region of thermal field of turbulent flow having various wall thermal conditions, thermal stratifications and pressure gradients. The different distributions of these numbers are observed, and understanding of turbulent characteristics of thermal entrance region is expanded.
