| 摘要: |
| 对螺旋曲面通道壁面内设置三角翼和椭圆柱两种组合涡发生器进行了研究。利用计算流体软件FLUENT进行数值模拟，在雷诺数Re为4000～7000范围内，研究组合间距s、三角翼攻角α、椭圆柱攻角β对换热的影响。由正交实验对涡发生器的结构进行整体优化，得出影响换热因素的主次顺序及优化组合结构，并通过实验测试比较优化结构与常规结构的综合强化换热效果。实验结果表明当s=90mm、α=45°、β=45°时的综合换热效果最佳，与常规结构相比，其强化换热效果提高了18.9%~38.3%，从而验证了模型的正确性和有效性。 |
| 关键词: 换热器技术 组合结构优化 正交试验 强化传热 |
| DOI： |
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| 基金项目: |
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| Study on Intensified Heat Transfer and Structural Optimization of Combination Vortex Generator in Warped Surface Channel |
| Zhang Yalong,Liu Shengxue,Qing Defan,Wang Cuifang,Zhang Wen |
| (School of Mechanical Engineering, University of South China) |
| Abstract: |
| The arrangement configuration of delta wing and elliptical cylinder were cautiously carried out on spiral warped channel wall layers of combination vortex generator. Based on numerical simulation FLUENT to study the influence of three parameters on heat transfer, including assembly distance s, triangle wing angle of attack α and elliptical cylinder angle of attack β which were discussed within the Reynolds number Re range from 4000 to 7000. Then using Orthogonal experiment methods to optimize the vortex generator structure entirely, obtaining the order of priority and optimum composition structure on heat transfer. Comparing with experimental test, the intensified heat transfer effect was reinforced by optimizing structure and normal structure of composite. The results show that α=45°,β=45°,s=90mm can have the comprehensive effect on heat exchanger optimum. what’s more, the intensified heat transfer is higher 18.9%~38.3% than ordinary .Therefore, the accuracy and validity had been confirmed definitely. |
| Key words: heat transfer technology optimum combination structure orthogonal test intensified heat transfer |
