Influence of internal channel geometry of gas turbine blade on flow structure and heat transfer |
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Authors: | Ryszard Szwaba Piotr Kaczynski Janusz Telega Piotr Doerffer |
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Affiliation: | Institute of Fluid-Flow Machinery, Polish Academy of Sciences(IMP PAN), Fiszera 14, 80-952 Gdansk, POLAND |
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Abstract: | This paper presents the study of the influence of channel geometry on the flow structure and heat transfer,and also their correlations on all the walls of a radial cooling passage model of a gas turbine blade.The investigations focus on the heat transfer and aerodynamic measurements in the channel,which is an accurate representation of the configuration used in aeroengines.Correlations for the heat transfer coefficient and the pressure drop used in the design of internal cooling passages are often developed from simplified models.It is important to note that real engine passages do not have perfect rectangular cross sections,but include a comer fillets,ribs with fillet radii and a special orientation.Therefore,this work provides detailed fluid flow and heat transfer data for a model of radial cooling geometry which has very realistic features. |
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Keywords: | cooling internal blade channels aerodynamics with heat transfer |
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