توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Performance Prediction Modeling of Axial–Flow compressor by Using of Loss models
نویسنده(ها): ، ، ،
اطلاعات انتشار: بیستمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۴
Axial flow compressor is one of the most important parts of gas turbine units. Therefore, its design and performance prediction are very important. Onedimensional modeling is a simple, fast and accurate method for performance prediction of any type of compressors with different geometries. In this approach, inlet flow conditions and compressor geometry are known and by considering various compressor losses, velocity triangles at rotor, and stator inlets and outlets are determined, and then compressor performance characteristics are predicted. Numerous models have been developed theoretically and experimentally for estimating various types of compressor losses. In present work, performance characteristics of the axial–flow compressor are predicted based on one–dimensional modeling approach. Firstly, the proposed algorithm for modeling and then the losses model for calculation of pressure loss coefficient in the blades cascade have been represented. In this work, models of Lieblein, Koch–Smith, Aungier, Hawell are implemented to consider compressor losses. The model resultes are compared with experimental data to validate the model.<\div>

۲Design Model of Axial Flow Compressor for High Temperature Power Plants by Latest Loss Models
نویسنده(ها): ، ، ،
اطلاعات انتشار: سومین کنفرانس ملی صنعت نیروگاههای حرارتی، سال
تعداد صفحات: ۶
Design models of axial flow compressor are developed for high temperature power plants with Closed Brayton Cycle for energy conversion. in recent years, manyefforts have been done for modeling and predicting of performance of these compressors on different conditions of speed and pressure ratio because of costly empiricalexperiments, and still are developing. The models are based on a mean–line through–flow analysis for free–vortex flow, accountfor the profile, secondary, end wall and tip clearance losses in the cascades. In this work ,models of Lieblein, Koch–Smith, Herrig, Johnsen–Bullock, Pollard–Gostelow, Aungier, Hunter–Cumpsty, Reneau are implemented to consider single stage compressor losses, stall and surge conditions and calculate thegeometrical parameters of blade cascades. In this regard, following the presentation of solution algorithm , the obtained results of modeling will be examined<\div>
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