Effendy, Marwan, Yao, Yufeng, Yao, Jun and Marchant, Denis R (2019) Pin-fin shape and orientation effects on wall heat transfer predictions of gas turbine blade. In: The 5th International Conference on Engineering, Technology, and Industrial Application, 12-13 DECEMBER 2018, SURAKARTA, INDONESIA.
Full content URL: https://doi.org/10.1063/1.5112392
Documents |
|
![]() |
PDF
Marwan paper 1.pdf - Whole Document Restricted to Repository staff only 907kB |
Item Type: | Conference or Workshop contribution (Paper) |
---|---|
Item Status: | Live Archive |
Abstract
Turbine blades are often exposed to the ‘hot’ gas environment and thus it is essential to apply effective cooling technique to extend the blade lifetime. In the present work, wall heat transfer characteristics inside a blade trailing-edge coolant passage were investigated by analyzing two baseline configurations experimentally studied by previous researchers. In addition, three new configurations were proposed by varying shape and orientation against an incoming airflow. All these five configurations adopted similar layout with five-row elliptic pin-fins in the main coolant region and one-row fillet circular pin-fin in the exit region. Validation study was started by two baseline configurations by comparing CFD predictions with experimental measurements, followed by wall heat transfer predictions of three newly proposed configurations. It was found that pin-fin shape and its orientation have considerable effects on the wall heat transfer characteristics, and that by rotating the pin-fin against incoming flow, some compromises could be achieved, such as higher heat transfer coefficient and lower pressure loss.
Keywords: | ‘hot’ gas environment, Turbine blades, cooling technique, CFD, heat transfer coefficient and lower pressure loss |
---|---|
Subjects: | H Engineering > H450 Propulsion Systems H Engineering > H321 Turbine Technology H Engineering > H141 Fluid Mechanics |
Divisions: | College of Science > School of Engineering |
ID Code: | 36509 |
Deposited On: | 23 Jul 2019 10:37 |
Repository Staff Only: item control page