We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Numerical investigation of turbulent flow and heat transfer for enhancing performance of gas turbine blade with rib turbulators.
- Authors
Chaisri, Pilaisiri; Mookum, Theeradech
- Abstract
We numerically investigate the effects of rib turbulators on turbulent flow and heat transfer in a gas turbine blade with impingement cooling. The 45°-angled ribs are attached on two opposite walls of the blade with two ribbed channels. Three-dimensional steady-state Reynolds-averaged Navier-Stokes equations combined with the standard k-e model and heat equation are used to analyse the turbulent flow, temperature distribution and cooling effectiveness. The numerical results indicate that a blade with ribs generates more recirculation regions and secondary flows, leading to higher turbulent kinetic energy, wall shear stress and a 23.86% increase in cooling effectiveness. In addition, increasing inlet velocity increases the volume-averaged cooling effectiveness, volume-averaged turbulent kinetic energy and area-averaged wall shear stress.
- Subjects
HEAT transfer in turbulent flow; GAS turbine blades; JET impingement; NAVIER-Stokes equations; TURBULENT flow; KINETIC energy
- Publication
Maejo International Journal of Science & Technology, 2024, Vol 18, Issue 1, p13
- ISSN
1905-7873
- Publication type
Article