摘要
通过数值模拟的方法研究了不同环境温度条件下超音速氧气射流的特性,并与前人的实验结果进行了对比分析.研究结果表明:与低温环境条件相比,高温环境条件下超音速氧气射流的速度衰减受到抑制,射流核心段长度得到延长;不同环境温度条件下,氧气射流的温度随着氧气射流的扩散不断升高,最终趋于环境温度;射流的压力分布趋势与射流速度分布趋势一致.数值模拟得到的射流速度、温度和压力结果与实测值吻合度较高.
ABSTRACT The characteristics of a supersonic oxygen jet at different environmental temperatures were studied by numerical simula-tion and compared with previous experimental results. It is found that the velocity attenuation of the oxygen jet is inhibited and the jet core length is extended under a high temperature environment compared with a low temperature environment. The jet temperature at different environmental temperatures becomes higher with oxygen diffusion and is close to environmental temperature finally. The jet pressure distribution has the same trend with the jet velocity distribution. The numerical simulation results of jet velocity, temperature and pressure have a relative high correlation with the measured values.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2014年第5期669-673,共5页
Journal of University of Science and Technology Beijing
基金
国家重大科学仪器设备开发专项资助项目(2011YQ14014505)
中央高校基本科研业务费资助项目(FRF-AS-12-004)
关键词
炼钢
超音速流动
射流
流场
温度
数值分析
steelmaking
supersonic flow
jets
flow fields
temperature
numerical analysis
