聚合射流流场的仿真模拟  

Simulation of Flow Field of Convergent Jet

作　　者：刘坤[1,2] 朱苗勇[1] 王滢冰[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]辽宁科技大学材料学院,辽宁鞍山114044

出　　处：《钢铁研究学报》2008年第12期14-17,共4页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50574007)

摘　　要：为研究有低密度伴随的聚合射流氧枪射流流场,利用氧枪射流检测系统,对常温下(冷态)以空气模拟的射流进行了物理模拟。结合数值模拟结果,分析了传统无伴随流射流以及带有副孔氦气低密度伴随情况下射流流场的流动状态,讨论了在不同的滞止压力和环境温度时有、无伴随射流流场特性。结果表明,修正的k-ε双方程模型能较好地预测实验结果,伴随流的存在减缓了中心射流的沿程衰减,环境温度的变化影响射流在径向和轴向的流动状态。In order to study coherent jet oxygen lance flow field with low density concomitance, physical simulation on jet that is simulated by air has been performed through oxygen lance jet measuring system at normal temperature （cold condition）. Associated with numerical simulation results, the flow state of traditional jet without con- comitance fluid and that in additional hole helium low density concomitance situation are analyzed. The character of jet flow field with concomitance or without concomitance is analyzed under different stagnant pressure and ambient temperature condition. Results show that experimental results can be predicted better by revised κ-ε turbulent model, the attenuation of central jet in its range is reduced because of concomitance existence, both radial and axial jet flow states are influenced by ambient temperature changing.

关 键 词：数值模拟 低密度伴随 湍流射流 

分 类 号：TB126[理学—工程力学]