摘要
为编制储罐外部受热时内部介质热响应的传热传质程序,利用FLUENT软件对储罐内部介质的热响应规律进行模拟。依据内部介质在受热和冷却条件下相变的控制方程,通过考虑内部介质气化热随温度的变化以及饱和温度与区域单元压力之间的关系,编写内部介质在受热和冷却条件下质量和能量源项的用户自定义函数(UDF)程序;将该程序导入FLUENT软件并在部分参数简化的条件下,分别对喷射火和池火条件下的丙烷储罐热响应模拟结果与试验结果进行对比。结果表明:模拟参数值与相同条件下试验参数值(内部介质温度、壁面温度,储罐内部压力)之间的相对偏差在15%以下;模拟参数值随时间的变化与试验值变化趋势基本相同,试验结果与模拟结果吻合较好。
To write heat and mass transfer program of thermal response of internal medium when tank is heated outside so as to simulate the thermal response law of medium in storage tank by means of FLUENT software . Based on phase transition governing equations of medium under condition of being heated and cooled, it proposes the source term UDF program of mass and energy of internal medium under the heating and cooling condition, by considering two group relationships ： one is changing of heat of vaporization with change of temperature and other is relationship between saturation temperature and area unit pressure. Simulation results and experimental results about thermal response of propane tanks under jet fire and pool fire conditions were compared, respectively, by importing the program into FLUENT software as well as simplifying some parameters. Results show that relative deviations between simulations values and experi- mental values （ including internal medium temperature, inner wall temperature and pressure in the tank）, whose conditions were used the same with simulations, of thermal response in storage tanks are under 15% ; The changing trends of parameters values over time between experimentations and simulations are basically the same, and results between two are in good agreement.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2014年第2期41-46,共6页
China Safety Science Journal
基金
国家自然科学基金资助(51276024)
江苏省科技支撑计划项目(BE2012644)
常州市科技支撑计划项目(CE20135035)
