Experimental and numerical investigation of design optimization of a partial admitted supersonic turbine

作     者：Reza Aghaei tog Abolghasem M.Tousin 

作者机构：Amirkabir University of TechnologyTehranPO.BOX 15875-4413Iran 

出 版 物：《Propulsion and Power Research》 (推进与动力（英文）)

年 卷 期：2013年第2卷第1期

页      面：70-83页

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Partial admission Non-linear optimization Genetic algorithm Three-dimensional(3D)numerical analysis Impulse turbine 

摘      要：To obtain a high specific work output,the large pressure ratios across the turbine are *** can be achieved using a supersonic *** the fluid mass flow is low,the impulse kind of one or two stages supersonic turbine is *** prevent losses due to low blade aspect ratio and issues related to manufacturing and industrial problems,the turbine is used in partial admission *** show that the turbine efficiency is highly dependent on the amount of partial admission *** turbine efficiency in full admission is high,but the use of partial admission lowers the additional ***,there will be a degree of partial admission in which the turbine will have the highest *** aim of this work is to achieve the optimum partial admission for a special impulse turbine as a case ***,in the beginning,an appropriate model of losses is ***,using a nonlinear design optimization code,the partial admission of an impulse supersonic turbine is *** code is written using a genetic ***,using three-dimensional numerical analysis,the optimal model will be *** the optimization problem,the turbine efficiency is the objective *** amount of design parameters and constraints used in this process are ten and eight,*** the optimization process,prototypes of designed and modified turbines are made and *** results were compared and *** results showed that the turbine efficiency is improved between 2.5%and 3%depending on various operation conditions.