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Sixth International Symposium on Turbulence and Shear Flow Phenomena
June, 22-24, 2009 , Seoul National University, Seoul, Korea

DOI: 10.1615/TSFP6

MRV ENABLED CFD FOR TURBINE INTERNAL COOLING FLOW

pages 391-396
DOI: 10.1615/TSFP6.620
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SINOPSIS

The full three-dimensional three-component velocity field in a scaled model of the complete internal cooling circuit of a typical gas turbine blade is measured experimentally with Magnetic Resonance Velocimetry (MRV) and compared with CFD results using FLUENT with four different turbulence models: k−ε, v2f, k−ω, and Spalarl-Allmaras and CFX with the k−ε model. Both the FLUENT and CFX with k−ε results best agreed with the MRV data. All three of these datasets arc directly compared in cross planes throughout the geometry including zones in the leading edge with jet impingement, the bend of a ribbed serpentine passage, and the pin fin arrays in the trailing edge. The CFX predictions agreed reasonably well with the experimental MRV results for most regions of the flow, FLUENT did not perform as well, particularly in the regions of the blade dominated by separation which include the cross-over holes in the leading edge passage, the serpentine bend, and the cylindrical pin fins. This combined experimental/computational program shows the utility of rapid prototyping experiments as an adjunct to CFD.

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