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首页> 外文期刊>International Journal Of Modelling & Simulation >NUMERICAL SIMULATION OF LAMINARHEAT TRANSFER IN ALUMINIUM CIRCULAR TUBE WITH INTERNAL LONGITUDINAL FINS
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NUMERICAL SIMULATION OF LAMINARHEAT TRANSFER IN ALUMINIUM CIRCULAR TUBE WITH INTERNAL LONGITUDINAL FINS

机译:具有内部纵向鳍的铝圆管内层流传递的数值模拟

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摘要

This paper presents a numerical simulation of laminar heat transfer in circular tube flows with internal longitudinal fins using finite difference numerical code. Three types of fin models with three different half included angle are considered. Two types of fluids (coolants), namely, water and engine oil, have been considered. Aluminium is considered as tube/fin materials. The variation of thermal conductivity of the tube materials, fluids and viscosity of the fluids with the temperature are taken into account in the solution procedure. The outer surface of the tube is exposed to constant heat flux. Steady, laminar flow and heat transfer is assumed. Reynolds numbers equal to 1,500 are used in this study. The flow is assumed to be fully developed locally, but thermally undeveloped. The governing equations are discretized using finite difference scheme. The momentum equation for the fluid and the energy equations for the fluid and the tube wall are solved simultaneously and iteratively.
机译:本文利用有限差分数值代码对带有内部纵向翅片的圆管流动中层流传热进行了数值模拟。考虑具有三种不同的一半夹角的三种类型的鳍片模型。已经考虑了两种类型的流体(冷却剂),即水和机油。铝被认为是管/翅片材料。在求解过程中要考虑到管材的导热系数,流体和流体的粘度随温度的变化。管的外表面暴露于恒定的热通量。假设存在稳定的层流和热传递。雷诺数等于1,500。假定该流量在本地已完全展开,但在热方面未展开。控制方程采用有限差分法离散化。同时迭代地求解流体的动量方程和流体以及管壁的能量方程。

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