高压玻璃钢管道固化工艺芯模传热特性研究

The Heat Transfer Property Research of the Mandrel of High Pressure FRP Pipe Curing Process

本文研究采用蒸汽从内部加热的高压玻璃钢管道固化工艺,介绍了其工艺原理,建立了芯模的传热模型以及内部蒸汽流动的动力学模型,基于标准κ-ε两方程湍流模型和汽液两相流相变模型,使用有限元流体分析软件Fluent对芯模传热的蒸汽流动和传热过程进行数值模拟,根据仿真结果得到了蒸汽流场以及温度场分布情况和变化历程,分析了蒸汽流场内压力、温度、速度等物理量与蒸汽控制参数和流道结构参数之间的关系。本文的研究为高压玻璃钢管道固化工艺的实现以及芯模结构参数和蒸汽控制参数的优化提供理论依据。

The curing process of high pressure FRP pipe that heats the composite by the mandrel inside the pipe with steam is researched in this paper. The principle of this process is introduced. The heat transfer model of the mandrel and the kinetic model of the steam flow inside the mandrel are established. Based on the standard κ-ε turbulence model and the vapor - liquid two phase transition model, the flow and heat transfer of steam inside the mandrel are simulated by using the software FLUENT. The change law of flow and temperature field distribution of the steam is obtained according to the results of the simulation, and the relationship between the quantity of the steam, pressure, temperature and flow speed, and the parameter of steam control and the structure of the flow passage is analyzed. This paper provides theoretical foundation for the curing process of high pressure FRP pipe and the optimization of the structure parameter of the mandrel and the control parameter of the steam.