| 粗糙元对高温气冷堆中间换热器强化传热性能的影响 | |
| 吴彦楠 ; 董玉杰 ; 原鲲 ; WU Yan-nan ; DONG Yu-jie ; YUAN Kun | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 人为粗糙元 强化传热 高温气冷堆 中间换热器 HTR-PM hot gas mixing model experiment TL424 |
| 其他题名 | Influence of Artificial Roughness on Heat Transfer Enhancement to Intermediate Heat Exchanger of High Temperature Gas-cooled Reactor |
| 中文摘要 | 为提高高温气冷堆中间换热器的换热效率,通过增加人为粗糙元的方式,对强化传热的效果进行CFD模拟分析,比较粗糙元管道和光滑管道,分别从流场分布、轴向速度、横向速度、湍动能、温度场及壁面传热系数等方面,进行粗糙元对强化传热性能影响的初步探究。结果表明,人为粗糙元的存在会破坏湍流边界层的黏性底层,增强横向扰动,大幅提高对流换热的效率。同时,人为粗糙元会降低主流的轴向速度,增大沿程阻力。因此,通过这项初步探究可为以后设计出具有最佳传热效率的粗糙元流道,提供必要的理论支持。; To improve the thermal efficiency of intermediate heat exchanger(IHX)in high temperature gas-cooled reactor,the influence of artificial roughness on heat transfer enhancement was simulated by CFD software.From the aspects of flow distribution,axial velocity,transverse velocity,turbulence kinetic energy,temperature field and wall heat transfer coefficient,apreliminary research comparing the smooth tube and rough tube was made.The results show that artificial roughness can destroy the adhesive layer of turbulent boundary layer,enhance lateral disturbance,and greatly improve the efficiency of heat convection.The frictional resistance also increases because of the decrease of axial velocity.As a result,the research can provide necessary theoretical support to design a rough tube with the best heat transfer efficiency. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143953]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 吴彦楠,董玉杰,原鲲,等. 粗糙元对高温气冷堆中间换热器强化传热性能的影响[J],2016, 2016. |
| APA | 吴彦楠,董玉杰,原鲲,WU Yan-nan,DONG Yu-jie,&YUAN Kun.(2016).粗糙元对高温气冷堆中间换热器强化传热性能的影响.. |
| MLA | 吴彦楠,et al."粗糙元对高温气冷堆中间换热器强化传热性能的影响".(2016). |
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