| 切向气流对激光加热材料的影响 |
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| 引用本文： | 王伟平,刘常龄.切向气流对激光加热材料的影响[J].强激光与粒子束,1996,8(3):373-377. |
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| 作者姓名： | 王伟平 刘常龄 |
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| 作者单位： | 中物院流体物理研究所国家863强辐射实验室，成都523信箱，610003 |
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| 基金项目： | 国家863激光技术青年科学基金 |
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| 摘 要： | 在重复频率YAG激光加载下，研究了30CrMnSiA钢片分别处于空气自然对流和切向强迫气流环境中不同的温度响应。实验用红外热像仪对靶前表面的温度进行了实时诊断，结果表明，在激光作用下，靶材的温升与靶前表面的对流换热状况有较大的关系，当靶面存在马赫数为0.1左右的切向气流时，材料的温升曲线明显低于靶处于空气自然对流环境下的温升曲线，气流与靶面的对流换热使得材料的激光加工所需能量或功率增加。这与应用热边界层换热动力学理论得到的结论一致。
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| 关 键 词： | 激光热效应 温度测量 对流换热 激光加热材料 |
| 收稿时间： | 1900-01-01; |
TANGENTIAL AIRFLOW INFLUENCE ON LASER HEATING MATERIALS |
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| Wang Weiping, Liu Changling, Wang Chunyan,and Yuan Yonghua.TANGENTIAL AIRFLOW INFLUENCE ON LASER HEATING MATERIALS[J].High Power Laser and Particle Beams,1996,8(3):373-377. |
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| Authors: | Wang Weiping Liu Changling Wang Chunyan and Yuan Yonghua |
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| Abstract: | Repitively Pulsed YAG laser heating 30crMnSiA steel which are placed in natural heat convective environment and forced heat convective environment is studied from experiments. The experiment results show that tangential airflow(about 0.1 Ma)obviously increases laser energy or power needed by material pocessing,which is in accord with results from aerodynandc theory. |
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| Keywords: | laser thermal effects temperature measurment heat convection laser heating materials |
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