纵流式换热器壳侧支撑方式的数值研究

CIESC Journal

纵流式换热器壳侧支撑方式的数值研究

汪淑奇;黄素逸

华中科技大学能源与动力工程学院;长沙理工大学能源与动力工程学院

出版日期:2007-05-05 发布日期:2007-05-05

Numerical investigation on shell side support of longitudinal flow heat exchanger

WANG Shuqi;HUANG Suyi

Online:2007-05-05 Published:2007-05-05

摘要/Abstract

摘要： 提出了一种纵流式换热器壳侧交错短杆支撑方式，并对光滑传热管束的交错短杆、短管、方形折流杆3种管间支承方式及波纹管束自支承、混合管束自支承方式，在流动与传热充分发展区段，采用湍流模型、六面体网格，运用商业软件FLUENT进行了三维数值计算。对各种支撑方式在不同的支撑间距（Ls=4.56和9.13）、不同的Reynolds数（Re＝2630、13150、26300、52600）下的传热特性、流动阻力特性、支撑的可靠性进行了优化研究。得出了各种支撑方式的壳侧Nu、压降及综合指标-h/（LΔp）与Re的关系。

Abstract: A new type of staggered short rod support in the shell side of a longitudinal flow heat-exchanger was proposed.Numerical investigation was performed for short rod, short tube, square rod baffle supports and self-supports of wave-tube bundles and mixed tube bundles in the fully developed flow and heat transfer zone by using the turbulent model and hexahedron grid with the commercial software FLUENT.For each support the heat transfer，resistance, aggregative indicator -h/（LΔp）and the reliability for different values of support space (Ls=4.56, 9.13) and different Re(Re＝2630,13150,26300,52600) were investigated.

汪淑奇;黄素逸. 纵流式换热器壳侧支撑方式的数值研究 [J]. CIESC Journal.

WANG Shuqi;HUANG Suyi . Numerical investigation on shell side support of longitudinal flow heat exchanger[J]. .