Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 10 ، دوره 8، شماره 1 - شماره پیاپی 15 ، مهر 2018، صفحه 107-120 1.79 M )
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2018.1948.1164 نویسندگان
Omid Fathi 1 Hadi Kargarsharifabad* 2 1 Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.2 Energy and Sustainable Development Research Center, Semnan Branch, Islamic Azad University, Semnan, Iran
تاریخ دریافت : 09 مهر 1395 ،
تاریخ بازنگری : 19 آذر 1396 ،
تاریخ پذیرش : 20 دی 1396
چکیده Improving the efficiency of compressors has been one of the most important goals of researchers over the years. In this paper, three different methods are presented for parameterization and blade optimization of axial flow compressor. All methods consist of flow analysis tool, optimization algorithms, and parametric geometry generation tool, that are different in each approach. Objective function is defined based on the aerodynamic performance of blade in the acceptable incidence angles range. A DCA blade is used as the initial guess for all methods. The performance of optimized blades and the initial blade are compared for evaluating the capability of various methods that a good agreement has been achieved. The results show that the value of performance improvement in each method depends on the number and type of the chosen parameters. All three methods have improved blade performance at the design incidence angle. However, only the first method shows significant performance improvement in off-design conditions. کلیدواژهها
Parametric geometry ؛ Loss coefficient ؛ Optimization algorithm ؛ Multi-point objective function
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