Prediction of the Characteristic Map of a Centrifugal Compressors Using Computational Fluid Dynamic
سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: فارسی
مشاهده: 121
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شناسه ملی سند علمی:
JR_MJMIE-2-2_004
تاریخ نمایه سازی: 28 آذر 1400
چکیده مقاله:
The present study has investigated the effects of the different loss mechanismsavailable in the open literature on the performance of the centrifugalcompressors. Then the performance maps of a centrifugal compressor havebeen produced using two methods. First of all, the analytical method for inwhich a system of empirical equations describing the flow in the centrifugalcompressors have been prepared and used to generate a Visual Basic code thatcan be used as a tool to predict the characteristic map of centrifugalcompressors. Secondly, the Ansys computational fluid dynamic (CFD) toolshave been used to simulate the flow of the same compressor and produce aperformance map using Ansys CFX solver that can be used to validate theresults obtained from the analytical method. The results obtained from bothmethods have been compared to experimental results available for thecompressor. The results obtained from both methods are in good agreementwith the experimental results. However, the results obtained from CFD matchmore accurately with the experimental results. The effects of each lossmechanism were calculated and results show that the skin friction loss has thehighest impact on the performance of the centrifugal compressors. Moreover,the incidence loss also has significant impact on the shape of the performancecurve of the compressor.
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نویسندگان
Jafar A.Masri
Department of Mechanical Engineering and Aeronautics, City University, London, United Kingdom