Research on Countercurrent Flow Limitation in Reactor Hot Leg at the Loss of Coolant Accident-Thermohydraulic Calculation With System Code RELAP5
نویسندگان
چکیده
Since the counter current flow limitation (CCFL) of two-phase has an important influence on safety analysis reactor, it is also great significance to study some characteristics and pattern transitions flow. In order explore influencing factors in hot leg under condition Loss Coolant Accident, this research, using RELAP5 simulation calculation, analyzed effect lengths path leg, shapes upper outlet inclined pipe, elbow connecting horizontal pipe CCFL. This research evaluated model. The founded that same liquid rate, longer lower gas rate at beginning flow; CCFL was not great; compared with sharp shape, Jf gentle circle slightly larger. method established suitable for prediction during Accident.
منابع مشابه
Flow Blockage Accident Analysis of Tehran Research Reactor Fuel Assembly
Tehran Research Reactor (T.R.R.) is a pool-type, 5 MW thermal research reactor. One probable event is that if some external objects or debris fall down into the reactor core and cause obstruction of the coolant flow through one of the fuel assemblies, decreasing the surface flow area, ceases the coolant flow, and also raises the fuel and sheaths tempe...
متن کاملthe effects of changing roughness on the flow structure in the bends
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
the effect of traffic density on the accident externality from driving the case study of tehran
در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Energy Research
سال: 2022
ISSN: ['2296-598X']
DOI: https://doi.org/10.3389/fenrg.2022.891105