Effects of pulse flow and leading edge sweep on mixed flow turbines for engine exhaust heat recovery
Effects of pulse flow and leading edge sweep on mixed flow turbines for engine exhaust heat recovery作者机构：State Key Laboratory of Automotive Safety and Energy Tsinghua University Beijing 100084 China National Key Laboratory of Diesel Engine Turbocharging Technology P.O.B. 22 Datong 037036 China
出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)
年 卷 期：2011年第54卷第2期
页 面：295-301页
核心收录：
学科分类：080702[工学-热能工程] 082502[工学-航空宇航推进理论与工程] 08[工学] 0807[工学-动力工程及工程热物理] 0825[工学-航空宇航科学与技术]
基 金：supported by the National Basic Research Program of China("973"Program)(Grant No.2011CB707204) the National Natural Science Foundation of China(Grant No.50706020)
主 题：waste heat recovery mixed flow turbine pusle flow
摘 要：Recovery of heat energy from internal combustion engine exhaust will achieve significant road transportation CO2 reduction. Turbocharging and turbogenerating are most commonly used technologies to recover engine exhaust heat *** exhaust pulse flow can significantly affect the turbine performance of turbocharging and turbogenerating systems,and it is necessary to consider the pulse flow effects in turbine design and performance *** investigation was carried out by numerical simulation on the mixed flow turbine pulse flow performance and flow *** showed that the variations of the turbine efficiency and flowfiled under pulsating flow conditions demonstrate significant unsteady *** effect of blade leading edge sweep on turbine pulse flow performance was *** is shown that increasing of the leading edge sweep angle can improve the turbine average instantaneous efficiency by about 2 percent under pulsating flow conditions.
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