Numerical predictions of three-dimensional flow and heat transfer are presented for non-rotating and rotating turbine blade cooling passages with or without the rib turbulators. A multi-block Reynolds-averaged Navier-Stokes method was employed in conjunction with a near-wall second-moment closure to provide detailed velocity, pressure, and temperature distributions as well as Reynolds stresses and turbulent heat fluxes in various cooling channel configurations. These numerical results were systematically evaluated to determine the effect of blade rotation, coolant-to-wall density ratio, rib shape, channel aspect ratio and channel orientation on the generation of flow turbulence and the enhancement of surface heat transfer in turbine blade cooling passages. The second-moment solutions show that the secondary flow induced by the angled ribs, centrifugal buoyancy, and Coriolis forces produced strong nonisotropic turbulent stresses and heat fluxes that significantly affected flow field and surface heat transfer coefficients.
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ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
July 14–18, 2002
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3616-9
PROCEEDINGS PAPER
Computation of Flow and Heat Transfer in Turbine Blade Cooling Passages by Reynolds Stress Turbulence Model (Keynote Paper)
Hamn-Ching Chen,
Hamn-Ching Chen
Texas A&M University, College Station, TX
Search for other works by this author on:
Je-Chin Han
Je-Chin Han
Texas A&M University, College Station, TX
Search for other works by this author on:
Hamn-Ching Chen
Texas A&M University, College Station, TX
Je-Chin Han
Texas A&M University, College Station, TX
Paper No:
FEDSM2002-31194, pp. 867-883; 17 pages
Published Online:
February 24, 2009
Citation
Chen, H, & Han, J. "Computation of Flow and Heat Transfer in Turbine Blade Cooling Passages by Reynolds Stress Turbulence Model (Keynote Paper)." Proceedings of the ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. Volume 2: Symposia and General Papers, Parts A and B. Montreal, Quebec, Canada. July 14–18, 2002. pp. 867-883. ASME. https://doi.org/10.1115/FEDSM2002-31194
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