| 摘要: |
| 用数字化仿真技术,基于Navier-Stokes方程和重整化群k-ε湍流模型,采用贴体坐标和交错网格系统,并运用网格自适应技术对核电燃料棒周边的网格进行自动加密与生成,用SIMPLEC算法对核电燃料棒以及焊接腔体进行了联合计算。通过对焊接腔体内部的周边流场情况的分析,发现了原有结构存在的不足,并针对此缺陷提出了优化的设计方案。 |
| 关键词: 计算流体力学 核燃料棒 SIMPLEC算法 |
| DOI： |
| 分类号: |
| 基金项目:上海市重点学科建设项目(Y0103);上海市教委基金资助项目(202472) |
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| Numerical simulation of improving welding efficiency of TIG surface protection |
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ZHENG Shu1, HU Guo-hui1, CHEN Fang-quan2, YANG Huan-ming3
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1.Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China;2.College of Manufacturing Automation, Shanghai University, Shanghai 200436, China;3.Jian Zhong Chemicals Corporation, Sichuan Yibin 644000, China
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| Abstract: |
| Based on the Navier-Stokes equation and renormalization group(RNG)κ-ε turbulence model,the flows around the nuclear fuel stick and the weld cavity were simulated numerically by the SIMPLEC algorithm.The body-fitted coordinates,staggered grid method and self-adaptive technique was utilized in this study.Through the analysis of flow around the nuclear fuel stick and the weld cavity,the defect of the old structure was found out,and two methods to improve the welding efficiency were proposed. |
| Key words: computational fluid dynamics nuclear fuel stick SIMPLEC algorithm |
