大直径厚壁气瓶淬火时不同喷水量下流动换热及应力特性仿真模拟（英文）

论文摘要

冷却强度是影响气瓶淬火组织性能的重要因素,合理的喷水量可以有效提高气瓶质量,降低生产成本。为了寻找最佳的喷水参数,考虑了水-汽的转化,建立了三相流共存的流-固耦合模型。采用多喷嘴喷水系统对气瓶尺寸为d 914 mm×38 mm×12000 mm的内壁和外壁进行了淬火冷却,研究了气瓶淬火时不同喷水量下内部压强、平均换热系数和瓶体应力的分布规律,并最终对数学模型进行了实验验证。结果表明,随着喷淋量的增大,内部压强和平均换热系数都随之增大。内部压强先缓慢增长,之后迅速增加,而平均换热系数则相反,先急速增加,而后增长速率较平缓。为保证气瓶能被淬透,最小的喷水体积应不小于40m3/（h·m）。应力结果表明,喷水量在40～290m3/（h·m）范围内淬火不会使瓶体发生变形。

论文目录

• 1 Introduction
• 2 Mathematical model and quenching parameter
•   2.1 Mathematical model
•     2.1.1 Control equations
•     2.1.2 Definite conditions
•   2.2 Material parameters
•   2.3 Quenching process and meshing
• 3 Results and analysis
•   3.1 Analysis of pressure
•   3.2 Analysis of heat transfer
•     3.2.1 Analysis of convection heat transfer on inner wall of the cylinder
•     3.2.2 Determination of reasonable water spray volume
•   3.3 Analysis of stress
• 4 Experimental verification
• 5 Conclusions
• Nomenclature

文章来源

类型: 期刊论文

作者: 高静娜,高颖,徐钦冉,王葛,李强

关键词: 大直径厚壁气瓶,淬火,喷水量,传热,应力,数值模拟

来源: Journal of Central South University 2019年11期

年度: 2019

分类: 工程科技Ⅱ辑

专业: 动力工程

单位: National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,School of Materials Science and Engineering, Hebei University of Science and Technology,School of Materials Science and Engineering, Hebei University of Technology

基金: Project(51674096)supported by the National Natural Science Foundation of China,Project(E2016203119)supported by Hebei Natural Science Foundation of China,Project(18211045)supported by the Key Research and Development Foundation in Hebei Province of China

分类号: TK124

页码: 3188-3199

总页数: 12

文件大小: 1466K

下载量: 58