变截面管换热器的流体力学性能研究  

Study on the hydrodynamic performance of heat exchanger with variable cross-section tube bundle

作　　者：李雪梅[1] 江楠[2] 岑汉钊[2] 

机构地区：[1]仲恺农业技术学院机电工程系,广东广州510225 [2]华南理工大学工业装备与控制工程学院,广东广州510640

出　　处：《仲恺农业技术学院学报》2005年第2期28-31,共4页Journal of Zhongkai Agrotechnical College

基　　金：广东省自然科学基金资助项目(970535).

摘　　要：根据流体力学的基本理论,建立了变截面管束的理论计算模型,应用当量直径的概念和叠加原理,推导出变截面管束管外流道中的流速分布和压力降的计算公式,为今后进一步提高变截面管换热器的传热和阻力性能提供理论参考和对比依据.<Abstrcat> A theoretical calculation model of variable cross-section tube bundle was put forward based on the fundamental theory of hydrodynamics. According to the concept of equivalent diameter and the superimposition principle, the calculation equations of flow velocity as well as the pressure drop of variable cross-section tube bundle were deduced, which provides reference for the improvement of heat transfer performance and hydrodynamic resistance variable cross-section heat exchanger.

关 键 词：变截面管 当量直径 叠加原理 

分 类 号：TK124[动力工程及工程热物理—工程热物理]