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Study on the Physics of Film-cooling of Converging-expanding Holes with Different Exit-entry Area Ratios
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Affiliation:
Li Yonghong,Liu Cunliang,Zhu Huiren(School of Power and Energy,Northwestern Polytechnical University,Xi'an 710072,China)
Clc Number:
V233.5
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Abstract:
Numerical simulation is carried out to investigate the film cooling mechanism of two converging-expanding holes with different exit-entry area ratios.The Realizable turbulence model with enhanced wall function is used.Results show that as the features of the flow fields and the temperature fields in the two holes are similar with each other,the distribution features of the film cooling effectiveness and the heat transfer coefficient of the two holes are also very similar.However,the cooling effectiveness of...
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Li Yonghong, Liu Cunliang, Zhu Huiren. Study on the Physics of Film-cooling of Converging-expanding Holes with Different Exit-entry Area Ratios[J]. Advances in Aeronautical Science and Engineering,2011,2(1):115-121