IGTC-61 Effects of Regenerator Performance on an Automotive GT Engine : Experimental Study on Regenerator Flow Friction Characteristics(Session B-5 BLADE HEAT TRANSFER AND HEAT EXCHANGER)

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This paper presents experimental study on flow friction characteristics of the regenerator designed for an automotive gas turbine engine. Pressure losses at room temperature were measured for ceramic matrix cores with various cell densities and wall thicknesses. The flow friction characteristics for each core were explainable by using the two terms representing laminar and turbulent pressure losses which were obtained by means of analyzing the measured data. An investigation was made into the quantitative relationship between core geometries and laminar/turbulent pressure losses, and pressure losses were expressed as the function of core geometries. The application of these empirical equations to compute regenerator pressure loss from core geometry and engine operating condition was investigated through regenerator component and engine testings. This predicting method was used to optimize core geometry and improvements in SFC and output power of engine were obtained.
公益社団法人日本ガスタービン学会の論文