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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Effects of width-to-depth ratio on heat transfer coefficient for gap
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Effects of width-to-depth ratio on heat transfer coefficient for gap

机译：宽深比对间隙传热系数的影响

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摘要

Purpose - The purpose of this paper is to perform the stimulation in order to examine the effects on the heat transfer coefficient and the flowfield properties at the vicinity of the gap due to variations in the width-to-depth ratio. Design/methodology/approach - The governing equations were discreted by using the finite volume method, and based on pressure-velocity coupled algorithm, the heat transfer coefficients outside and inside the gaps, defined by the width-to-depth ratio of 1,2/3,1/2,1/3 and 1/4, were obtained by the Fluent software. Findings - The number of vortex inside the gap depends on the width-to-depth ratio, and the maximum value of the heat transfer coefficient emerges on the downstream surface. Originality/value - The study gives a feasible method to simulate the flowfield and the heat transfer inside the gap, which will help the design of the thermal protection system for reentry vehicles.
机译：目的-本文的目的是进行刺激，以检查宽度与深度之比的变化对间隙附近的传热系数和流场特性的影响。设计/方法/方法-使用有限体积法离散控制方程，并基于压力-速度耦合算法，以1,2的宽深比定义间隙内部和内部的传热系数通过Fluent软件获得/ 3、1 / 2、1 / 3和1/4。发现-间隙内的涡旋数取决于宽度与深度的比，并且传热系数的最大值出现在下游表面。原创性/价值-研究提供了一种可行的方法来模拟间隙内的流场和传热，这将有助于设计再入车辆的热保护系统。

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