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Register a new userDetermination of Two Phase Flow Boiling Regimes in Vertical Uniformly Heated Tube
تحديد أنظمة الغليان و الجريان للتيار ثنائي الطور في أنبوب شاقولي متجانس التسخين
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تم في هذا البحث دراسة أنظمة الغليان و الجريان ثنائي الطور القسري داخل الأنابيب الشاقولية، بهدف تحديد نظام الغليان و الجريان السائد في أي منطقة من الأنبوب. مجالات الدراسة للمتغيرات التي تم وفقها البحث كانت كالتالي : الضغط ، الكثافة الحرارية السرعة الكتلية إنتالبي الدخول طول الأنبوب و قطر الأنبوب، و نظراً لغياب طريقة دقيقة للتنبؤ بنظام الغليان و الجريان السائد في الأنابيب تم الاستفادة من بعض الدراسات التجريبية التي أجريت على الجريان ثنائي الطور (سائل – بخار) لتحديد أنظمة الغليان و الجريان ثنائي الطور القسري السائدة في الأنابيب الشاقولية، حيث تم إنشاء لوغاريتم توصّف هذه الأنظمة كتب في بيئة الـ Matlab. أجريت دراسة تحليلية للمخططات الناتجة ، و تم اقتراح توجهات الأبحاث اللاحقة .
In this paper, we studied flow and boiling regimes of two-phase forced flow in vertical tubes to determine the dominated flow and boiling regime at any region of tube. Studied Ranges of main parameters were: Pressure. Because of absence an accurate method of flow and boiling regimes prediction, some of experimental equations of two phase flow (liquid-steam) had been used to determine the dominated flow and boiling regime in vertical tubes and build algorithm written by Matlab environment describes these regimes. An analytical study was provided of the resulted diagrams and suggestions were given for next studies .
References used
GHIAASIAAN, M. S.; Two-Phase Flow Boiling and Condensation in Conventional and Miniature Systems. First ed., Cambridge University Press-2008, 613
SAFFARI, H. , GHOBADI, M. ; Calculation of Convective Boiling in a Vertical Tube at Sub- atmospheric Pressures, Australian Journal of Basic and Applied Sciences, 4(2010), 687-697
ABEDINI, S. H.; A Thesis Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Science ,A Numerical Investigation of Two Phase Solar-Collector Pipe, Lincoln, Nebraska, May, 2012, 87
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