原子能科学技术2017，Vol.51Issue(7)：1181-1187,7.DOI:10.7538/yzk.2017.51.07.1181
雷诺数关系式对膜状凝结湍流区传热计算的影响
Effect of Reynolds Correlations on Heat Transfer Calculation of Film Condensation in Turbulent Flow
摘要
Abstract
Film condensation widely exists in the compact containment and the pressurizer of nuclear power plant.At present,the difference of Reynolds correlations of the mass relation and the energy relation is not distinguished in the turbulent flow of film condensation.For outer tube natural-convection film condensation of pure steam,the effect of Reynolds correlations on the characteristic of film condensation in the turbulent flow was quantitatively studied.Based on the general assumption of the modified term in turbulent flow of film condensation,the general form of heat transfer coefficient was deduced.In addition,by solving a set of simultaneous equations of the heat transfer coefficients and Reynolds correlations of Remass and Reenergy,the general relations of Reynolds correlation and the corresponding heat transfer coefficients were obtained respectively.It is indicated that in turbulent flow region,Remass and Reenergy are quite different.Their relation is greatly influenced by the Prandtl number,and the demarcation point of Prandtl number is presented.The corresponding average heat transfer coefficients and their relative deviations are the non-linear function of Reynolds number (Re) and Prandtl number (Pr).When 0.1<Pr<4.0 and Re>1 600,the value of the relative deviation for the average heat transfer coefficients is generally within-60% to +60%.By validating experimentally and theoretically,Reenergy leads to more accurate calculations in turbulent flow region.关键词
膜状凝结/雷诺数/传热系数/湍流Key words
film condensation/Reynolds number/heat transfer coefficient/turbulent flow分类
能源科技引用本文复制引用
彭银波,张亚军,李卫华,肖秀,吴磊..雷诺数关系式对膜状凝结湍流区传热计算的影响[J].原子能科学技术,2017,51(7):1181-1187,7.基金项目
国家自然科学基金委创新研究群体科学基金资助项目(51321002) （51321002）
