收缩段型面对超音速氧气射流特性影响的数值模拟  

Numerical Simulation on Effect of Contraction Curve on Supersonic Oxygen Jet Characteristic

作　　者：杨岩[1,2] 朱荣[1,2] 赵飞[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]高端金属特种熔炼与制备北京市重点实验室,北京100083

出　　处：《工业加热》2016年第3期9-12,共4页Industrial Heating

基　　金：国家重大科学仪器设备开发专项(2011YQ14014505);国家自然科学基金重点项目资助(51334001)

摘　　要：超音速氧气射流特性是转炉炼钢的重要因素之一。收缩段型面对氧气射流特性有一定影响。本研究通过数值模拟的方法研究了不同收缩段型面对超音速氧气射流的影响。研究结果表明:收缩段曲线对射流核心段长度影响不大,主要影响射流的稳定情况及流场品质,进出口收缩比较小的喷管,射流也相对比较稳定。其中五次曲线设计得到的喷管射流核心区速度相对比较稳定,激波串现象不明显,射流速度衰减较为缓慢。射流的压力分布趋势与射流速度分布趋势一致。The characteristic of supersonic oxygen jet is an important factor in steelmaking. Contraction curve have a certain influence on oxygen jets. This study investigated the effects of different contraction curve to the supersonic oxygen jet by numerical simulation. The results show that： the contraction curve has little effect on length of the jet core segment,mainly affecting the stability of the quality of flow field.The little import and export contract,the jet is more stable. The nozzle designed by five curves is relatively stable,and the shock train is not obvious,the jet speed decay more slowly. The dynamic pressure distribution trends are consistent with the distribution trend of velocity.

关 键 词：收缩段型面 超音速氧枪 流场 数值模拟 

分 类 号：TG142.71[一般工业技术—材料科学与工程]