摘要
为研究水下航行器螺旋管蒸发器在锅炉反应器中的性能,建立了其稳态一维分布参数模型。通过将蒸发器沿管长划分成若干个单元,采用数值计算方法,对每个单元进行求解,获得工质沿流动方向的状态参数。通过仿真试验,分析了工质被加热至过热蒸汽的流动和换热过程,对比分析了不同进口工质温度和流量下管内温度和压强的变化情况。仿真结果表明,工质通过蒸发器产生的压损主要在两相区和气相区,但相对工质自身高压,压损较小;提高进口工质温度可以增强换热性能,提高出口蒸汽温度;减少进口工质流量,会增加出口蒸汽温度,且增温作用显著。该数值计算模型可为水下航行器螺旋管的设计及其动力系统热力计算提供参考。
A steady state one-dimensional distributed parameter model of the spiral tube evaporator is built to study its property in the combustion reactor for an underwater vehicle. The evaporator is divided into many units along the tube to obtain the state parameters of the working medium along flow direction by the calculation of each unit. The flow and heat transfer processes during the working medium is heated to superheated steam are analyzed via simulation. The changes of the temperature and pressure in the tube are compared for different flow rate and temperature of the inlet working medium. Simulation results show that： the pressure loss during the medium passing through evaporator occurs mostly in two-phase area and vapor area, but the loss is small compared with the pressure of the medium itself; higher inlet temperature of the working medium improves the heat exchange performance and raise outlet vapor temperature; and reducing inlet flow rate significantly results in higher outlet vapor temperature. The proposed model may be appli- cable to spiral tube design and thermal calculation of power system for underwater vehicles.
出处
《鱼雷技术》
2015年第4期301-304,共4页
Torpedo Technology
关键词
水下航行器
螺旋管
蒸发器
一维分布参数模型
underwater vehicle
spiral tube
evaporator
one-dimensional distributed parameter model
作者简介
白杰（1985-），男，在读博士，主要研究方向为水下航行器动力技术．
