InterPore2022

Pin-fin shape and orientation effects on heat transfer and fluid flow in gas turbine blade

30 May 2022, 16:50

15m

Oral Presentation (MS17) Thermal Processes, Thermal Coupling and Thermal Properties of Porous Media: modeling and experiments at different scales MS17

Speaker

Dr chekib ghabi

Description

Gas turbine blades are usually exposed to a hot gas environment. Thus, it is essential to apply
effective cooling technique to extend the blade lifetime. Turbine blades employ wedge-shaped
channels for trailing edge internal cooling. Many experimental and numerical studies have
been conducted on the heat transfer and flow structures in a wedge-shaped channel. In this
work, we focused on a prototype based on laminar flow and wall heat transfer characteristics
inside a blade trailing-edge. The numerical simulation was given by the thermal Lattice
Boltzmann Method. A validation code was achieved by our previous research. In this study,
five baseline configurations were used. These configurations were obtained by varying the
shape and orientation against the incoming airflow. They presented a similar layout with five-
row pin-fins in the main coolant region and one-row fillet circular pin-fin in the exit region.
As a result, we found that the pin-fin shape and its orientation have considerable effects on the
wall heat transfer proprieties. Indeed, some factors, such as higher heat transfer coefficient
and pressure loss, depend on the rotation of the pin-fin.

Presentation materials

congab.pdf