Computations with multi-block chimera grids were performed to study the three-dimensional turbulent flow and heat transfer in a rotating rectangular channel with staggered arrays of pin-fins. The channel aspect ratio (AR) is 4:1, the pin length to diameter ratio is 2.0, and the pin spacing to diameter ratio is 2.0 in both the stream-wise and span-wise directions. A total of six calculations have been performed with various combinations of rotation number, Reynolds number, and coolant-to-wall density ratio. The rotation number and inlet coolant-to-wall density ratio varied from 0.0 to 0.28 and from 0.122 to 0.20, respectively, while the Reynolds number varied from 10,000 to 100,000. For the rotating cases, the rectangular channel was oriented at with respect to the plane of rotation to be consistent with the configuration of the gas turbine blade. A Reynolds-averaged Navier-Stokes (RANS) method was employed in conjunction with a near-wall second-moment turbulence closure for detailed predictions of mean velocity, mean temperature, and heat transfer coefficient distributions.
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Computation of Flow and Heat Transfer in Rotating Rectangular Channels With Pin-Fins by a Reynolds Stress Turbulence Model
Guoguang Su,
Guoguang Su
Turbine Heat Transfer Laboratory, Department of Mechanical Engineering,
Texas A&M University
, College Station, TX 77843
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Hamn-Ching Chen,
Hamn-Ching Chen
Ocean Engineering Program, Department of Civil Engineering,
Texas A&M University
, College Station, TX 77843
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Je-Chin Han
Je-Chin Han
Turbine Heat Transfer Laboratory, Department of Mechanical Engineering,
Texas A&M University
, College Station, TX 77843
Search for other works by this author on:
Guoguang Su
Turbine Heat Transfer Laboratory, Department of Mechanical Engineering,
Texas A&M University
, College Station, TX 77843
Hamn-Ching Chen
Ocean Engineering Program, Department of Civil Engineering,
Texas A&M University
, College Station, TX 77843
Je-Chin Han
Turbine Heat Transfer Laboratory, Department of Mechanical Engineering,
Texas A&M University
, College Station, TX 77843J. Heat Transfer. Jun 2007, 129(6): 685-696 (12 pages)
Published Online: August 17, 2006
Article history
Received:
July 5, 2005
Revised:
August 17, 2006
Citation
Su, G., Chen, H., and Han, J. (August 17, 2006). "Computation of Flow and Heat Transfer in Rotating Rectangular Channels With Pin-Fins by a Reynolds Stress Turbulence Model." ASME. J. Heat Transfer. June 2007; 129(6): 685–696. https://doi.org/10.1115/1.2717935
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