基于CFD的折流杆换热器流场仿真系统研究  

Numerical simulation system for flow field of baffle-rod heat exchanger based on CFD

作　　者：王定标[1] 向飒[1] 魏新利[1] 

机构地区：[1]郑州大学化工学院

出　　处：《石油机械》2006年第5期14-17,2,共4页China Petroleum Machinery

基　　金：国家"九五"科技攻关项目(96-A01-01-07)。

摘　　要：基于计算流体动力学原理，建立了换热器流体流动和传热过程的控制方程组，应用算子分裂法，将换热器控制方程分裂为基本的对流、扩散、Stokes问题；采用8～20节点三维等参单元，推导出有限元离散化方程组。编制了流体流动和传热的数值仿真系统程序，应用仿真系统进行传热数值模拟计算和实验验证，通过对比两者的Nu与Re的关系，可以看出仿真系统的计算值和实验测量值非常接近。实验证明，采用编制的折流杆换热器数值仿真系统进行传热模拟计算是切实可行的。Based on the principle of calculated fluid dynamics (CFD), a control equation group is established for fluid flow and heat transfer of the heat exchanger. A method of operator splitting is used to split the control equations of heat exchanger into basic convection, proliferation and Stokes question, the unit of 3D parameters of 8 to 20 nodes is used to derive the equation group of finite element discretization, a program of numerical simulation system is established for fluid flow and heat transfer, the simulation system is deployed to calculate numerical simulation and experimental demonstration of heat transfer. The correlation between Nu and Re of both is contrasted. It can be seen that the value of numerical calculation is approached to that of experiment. It is proven by experiment that the established simulation system is feasible for the simulation calculation of heat transfer.

关 键 词：折流杆换热器 CFD传热 数值模拟 仿真系统 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程] TQ051.5[化学工程]