CFD study of geometrical parameters effect on heat transfer coefficient during flow boiling in helically coiled tube
Publish place: سومین کنفرانس انتقال حرارت و جرم ایران
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
View: 506
This Paper With 7 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICHMT03_091
تاریخ نمایه سازی: 7 اسفند 1396
Abstract:
Numerical study of subcooled and saturated flow boiling in the curved and helically coiled tubes is one of the challenging area of computational fluid dynamics (CFD) studies. In this paper, the CFD modeling of bubbly flow boiling in the small helically coiled tube at low vapor quality region are studied. A proper Eulerianbased mathematical model is used for interphase exchange forces and heat transfer between two phases in CFD modeling using bulk boiling model. The results show that, the inner and the bottom wall of the helically coiled tube have the lowest and the highest heat transfer coefficient, respectively. It has been observed that at low vapor quality flows, the heat transfer coefficient is enhanced by decreasing in coil diameter, tube diameter and increasing of coil pitch of helically coiled tube.
Keywords:
Authors
Mohammad Ali Abdous
Iran University of Science and Technology
Shahriyar Ghazanfari Holagh
Iran University of Science and Technology;
Hamid Saffari
Iran University of Science and Technology;
Masood Shamsaiee
Iran University of Science and Technology;