High heat transfer distribution exists on the leading edge of a turbine blade, owing to the occurrence of horseshoe vortex. Therefore, the effect of a leading-edge fillet was analyzed to reduce the occurrence of horseshoe vortex and minimize heat transfer distributions on the endwall. Numerical simulations were conducted for a Reynolds number of 100,000 using ANSYS CFX (Ver.15). A base case without a fillet and three cases with a fillet each (concave, line, and convex) were compared. The fillet cases had a lower total pressure loss coefficient than that of the base case because of the reduced horseshoe vortex. Furthermore, the fillet cases showed a reduced heat transfer distribution on the leading edge and endwall of the turbine blade. Specifically, the concave fillet case showed a 7.6% lower heat transfer distribution on the endwall than the base case. Therefore, the installation of a leading-edge fillet on the turbine blade is useful for reducing the total pressure loss and heat transfer distribution of the blade.
|Number of pages||9|
|Journal||Transactions of the Korean Society of Mechanical Engineers, B|
|Publication status||Published - 2021|
Bibliographical notePublisher Copyright:
© 2021 Korean Society of Mechanical Engineers. All rights reserved.
All Science Journal Classification (ASJC) codes
- Mechanical Engineering