网状孔板纵向流换热器壳程流体流动及换热的三维数值模拟

摘要

利用Fluent软件对网状孔板纵向流换热器壳程流体流动及换热进行了三维数值模拟,得到了壳程流体温度场、速度场及压力场等细观信息。根据模拟的结果,揭示了网状孔板强化壳程流体换热的机理,分析了壳程流体沿轴向流动及换热的性能,总结了近壁区流场及温度场的特点。%The fluid flow and heat transfer for shell side in reticulated orifice-baffle longitudinal flow type heat exchanger was simulated with Fluent software.The temperature field,velocity field,and pressure field in shell side were obtained.The enhancement mechanism of heat transfer due to the structure of reticulated orifice-baffle was discussed and the axial flow and heat transfer were analyzed for shell side according to the simulation results.Finally,an analysis of the flow field and temperature field close to the wall was given.