Heat Transfer Analysis and Estimation of CHF in Vertical Channel
- سال انتشار: 1398
- محل انتشار: مجله سیستم های دینامیکی کاربردی و کنترل، دوره: 2، شماره: 1
- کد COI اختصاصی: JR_JADSC-2-1_003
- زبان مقاله: انگلیسی
- تعداد مشاهده: 230
نویسندگان
Department of Mechanical Engineering, University of Hormozgan, Bandar Abbas,, Iran
Department of Mechanical Engineering, University of Hormozgan, Bandar Abbas,, Iran
Department of Mechanical Engineering, University of Hormozgan, Bandar Abbas,, Iran
Department of Mechanical Engineering, University of Hormozgan, Bandar Abbas,, Iran.
Department of Mechanical Engineering, University of Hormozgan, Bandar Abbas,, Iran.
چکیده
Heat transfer occurs in flow boiling; as a result, the amount of heat between the tube wall surface and the fluid at different points of the tube may vary depending on the volume percent of vapor at those points. If the flow is fully vaporized, it does not allow for perfect heat transfer at that point; this significantly increases the temperature there; in this case the applied heat flux is called critical heat flux (CHF). The present paper has focused its attentions on simulating a two-phase fluid flow within the CHF range using ANSYS Fluent. The simulation results indicated an average error below ۷%, which is more than those obtained by the experimental results. The maximum temperature of the tube surface when applying CHF could range between ۲۰۰ and ۵۰۰ K degrees more than that of fluid saturation according to the fluid working conditions. It also should be noted that both CHF and maximum temperature increase as the input pressure and mass flux do increase.کلیدواژه ها
Critical Heat Flux, Boiling, Two-phase flow, Simulationاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.