【摘 要】
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To establish an effective and reliable turbine preliminary design tool,a turbine one-dimensional optimal design computer program has been compiled.The program compiled by C++computer language is in ob
【机 构】
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China Aerodynamics Research and Development Center
论文部分内容阅读
To establish an effective and reliable turbine preliminary design tool,a turbine one-dimensional optimal design computer program has been compiled.The program compiled by C++computer language is in object-oriented style,and is based on mean diameter aerodynamic characteristics,while neglect any radial parameters.The input parameters of the program include inlet conditions and geometry design limits.The results of computation include flow characteristics of stage and meridian flow path.Parameters that will mutate in the evolution are inlet hub/tip radius ratio,stator exit angle,stage work distribution,and rotor inlet/exit axial velocity ratio.Objective function is to find the highest total efficiency.And to take consideration of design constraints,a penalty function has been formulated.Two different turbines quoted from references have been redesigned by the program,of which one is single-stage and the other is two-stage,marked T1 and T2 respectively herein.A total efficiency of 90.96%for T1 and 92.64%for T2 has been obtained by computation compared with the original values of 88%and 93.2%.The results show that the program is effective and applicable to engineering.
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