Abstract
When a turbulent boundary layer approaches a symmetric bluff-body, the body-generated adverse-pressure gradient precipitates a separation process that forces the impinging boundary layer vorticity to reorganize into a horseshoe vortex. Endwall heat transfer is influenced by the presence of horseshoe vortex. This paper shows the result of experimental and numerical study about the horseshoe vortex and heat transfer in the leading-edge endwall region. Naphthalene sublimation method was used to measure the detail local heat transfer coefficient distribution on the endwall. The v2f model resulted in good agreement of the local heat transfer coefficient distributions between experiments and numerical analysis.
