Volume 26 Issue 12
Dec.  2011
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QIU Qing-gang, WANG Hai-peng, ZHAO Liang, SHEN Sheng-qiang. Heat transfer and friction behavior in internal cooling duct with cuniform-fins[J]. Journal of Aerospace Power, 2011, 26(12): 2648-2654.
Citation: QIU Qing-gang, WANG Hai-peng, ZHAO Liang, SHEN Sheng-qiang. Heat transfer and friction behavior in internal cooling duct with cuniform-fins[J]. Journal of Aerospace Power, 2011, 26(12): 2648-2654.

Heat transfer and friction behavior in internal cooling duct with cuniform-fins

  • Received Date: 2011-01-06
  • Rev Recd Date: 2011-03-23
  • Publish Date: 2011-12-28
  • Experimental and numerical methods were applied together to investigate the influence of cuniform-fin geometry parameters on heat transfer and friction behavior in helix-alike internal cooling channel of the gas turbine blades.The numerical results were compared with the experimental data,and they agreed very well with each other.Results show that,with the increase of helix-alike fin leading angle,heat transfer enhancement is improved more significantly and at the mean time pressure penalty also becomes higher in the internal cooling duct.The results also indicate that air flow direction has less effect on heat transfer enhancement,but the flow resistance with reverse coolant direction is markedly higher than that with normal coolant direction.In addition,based on the results of the numerical simulation,the configuration of fins with leading angle 7? and fluid flow with normal coolant direction give the best overall performance.

     

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