STUDY ON THE PREDICTING MODEL OF ONSET OF NUCLEATE BOILING IN NATURAL CIRCULATION BASED ON UNASCERTAINED MATHEMATICS
Subcooled boiling in natural circulation has great influences on the flow and heat transfer characteristics of the medium in primary circuit loop of pressurized water reactor. Onset of nucleate boiling (ONB) is a key point in boiling heat transfer. According to analyze the existing models of ONB, the main factors that affect ONB are found out. The effects of main factors and the location of ONB are analyzed based on Yang Ruichang model in natural circulation, and found a model to calculate the location of ONB in natural circulation. A mathematical model is created using unascertained mathematics and compared with other models. The conclusion illustrates that the predicting model can describe the physical phenomena of subcooled boiling efficiently, and depicts the relation of certainty and uncertainty of influencing factors preferably by unascertained mathematics, which has particular methods to handle incomplete information, unsteady and inaccuracy numerical value, and variation quantity. The model reveals the real circumstance more accurately and plays an important role in security evaluation in nuclear power plant.
ZHANG Ming ZHOU Tao LIU Ping RAN Ke SHENG Cheng FU Tao XIAO Zejun
Institute of nuclear thermal-hydraulic safety and standardization,North China Electric Power Univers aInstitute of nuclear thermal-hydraulic safety and standardization,North China Electric Power Univer bNational key laboratory of bubble physics and natural circulation,nuclear power institute of china,
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-6
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）