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Register a new userThe actual performance of the Propeller by using CFD analysis program
تحديد الأداء الفعلي للرفاص باستخدام برنامج CFD ANALYSIS
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يهدف البحث إلى التحقق من الأداء الفعلي لعمل مروحة الرفاص و ذلك بالاعتماد على سلسلة النتائج الصادرة عن أحواض هامبورغ و المعروفة باسم RANSE حيث يتم تحليل المنحنيات و الخصائص الهيدروديناميكية لعمل الرفاص في المياه المفتوحة و ذلك باستخدام البرنامج التجاري CFD Analysis m by HydroComp. و عليه تُم مقارنة النتائج التي تم الحصول عليها مع البيانات التجريبية الموجودة، كذلك دراسة التدفق حول مختلف أجزاء بدن السفينة و تحديد قيم المقاومة و معامل الاحتكاك CF و مقارنة هذه القيم مع القيم الصادرة عن أحواض ITTC حيث وجد تطابق بين قيم نتائج سلسلة RANSE و قيم التجارب و الحسابات في مختلف مراحل الدراسة. و بناءً على ذلك تم وضع مجموعة من الحلول المتعلقة بعمل رفاصات السفينة و تقييم مدى التفاعل و التأثير المتبادل لعمل الرفاص في مختلف شروط العمل، و تحديد درجة الاختلاف الحاصلة من قيم عزم الدوران و معامل التقدم و التوجيه التي تم الحصول عليها بالاعتماد على برامج CFD حيث نوقشت النتائج العددية و البيانات التحليلية في حالة العمل بالمياه المفتوحة.
This research aims to check the actual performance of the work of the propeller depending on series of results issued from Hamburg basins that are known by RANSE where the arcs analysis and the hydrodynamic characteristics of the propeller work in open water are done by using the commercial program CFD Analysis m by Hydro Comp. Thus, the results were compared with the experimental data and the study of fluently around the different parts of the ship and the definition of resistance values and friction factor CF. These values were compared with those issued by ITTC basins and coincidence was found between those of RANSE and the experimental values in the different stages of study. Therefore, a collection of solutions related to the work of propeller were achieved in addition to the evaluation of the level of interaction and the exchanged effect of the propeller work in different conditions, and the definition of degree of difference resulted from the values of the rotation moment and the factors of advance and control the are resulted from the use of CFD program. The numerical results and the syntheses data were discussed in case of working in open water.
References used
Zhang, Z., Liu, H., Zhu, S., Zhao, F., Application of CFD in ship engineering design practice and ship hydrodynamics, Journal of Hydrodynamics, Vol. 18, Issue 3, July 2006, p. 315–322
Zhou, L. D., Yuan, J. L., Calculation of the turbulent flow around the stern and in the wake of a body of revolution with the propeller in operation, 15th Symposium on Naval Hydrodynamics, 1984, p. 279–290
Shen, H., Gomri, A., Chen, Q., Thehydrodynamic performance prediction of ship hull with propeller, International Conferenceon Applied Mechanics,MaterialsandManufacturing, 2011, Vol. 117–119, p. 598–601, Shenzhen
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