基于三维实体模型的管壳式换热器壳程流场和温度场数值研究.pdf

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试验研究
基于三维实体模型的管壳式换热器壳
程流场和温度场数值研究
古新,董其伍,王珂
(郑州大学热能工程研究中心,河南郑州 450002)
摘要:根据管壳式换热器的结构特点,采用基于管壳式换热器真实三维实体模型的几何建模方案,
提出了管壳式换热器周期性全截面计算模型,实现了具有复杂壳程结构的管壳式换热器的数值模
拟,克服了现有数值模拟建模方式的一些不足,为再现和模拟管壳式换热器壳程的真实流动状况,
以及分析各种构件对壳程流体流动和传热性能的影响提供了良好的辅助手段。在综合考虑折流杆
换热器壳程流体流动与传热的多方面影响因素下,提出了对折流杆换热器周期性单元流道模型的
修正算法,改进和完善了折流杆换热器周期性单元流道计算模型的实用性和适用性。
关键词:管壳式换热器;周期性;计算模型;数值模拟;修正算法
中图分类号: TK124 文献标识码: A 文章编号: 1001 - 4837 (2008) 05 - 0001 - 05
Num er ica l Study on Flow F ield and Tem pera ture F ield in Shellside
of Shell and tube Hea t Exchanger Ba sed on 3 D Solid M odel
GU X in, DO NG Q i wu, W ANG Ke
( Thermal Energy Engineering Research Center, Zhengzhou University, Zhengzhou 450002, China)
Abstract:According to the structure characteristics of the shell and tube heat exchanger, the geometric
modeling p roject based on the real 3 D solid model of the shell and tube exchanger is adop ted, the peri
odic total cross putation model of the shell and tube heat exchanger is p resented, and the nu
merical simulation of the shell and tube heat exchanger p lex supporting structures in the shell
side is realized. This new method can e some insufficiencies of the p resent numerical simulation
modeling method and p rovide a well aided method for recurring and simulating the actual fluid flow states