激光诱导的对流:辐射基础函数模拟.
Applied optics
|September 14, 2023
概括
高能激光器在吸收介质中产生热流,导致时间依赖的热开花. 数字模拟与实验结果相匹配,显示了一个半月形的激光点.
科学领域:
- 光学是什么?光学是什么?光学是什么?
- 流体动力学 流体动力学
- 计算物理 计算物理
背景情况:
- 在吸收介质中的高能激光传播可以诱导对流热流.
- 这些电流通过折射率变化与激光束相互作用,导致热开花.
- 了解这种现象对于涉及激光物质相互作用的应用至关重要.
研究的目的:
- 为了研究高能激光器在几乎停滞不前的吸收介质中的时间依赖的热膨胀.
- 开发和应用一个数值方法来模拟激光诱导的流体动力学和光束传播.
- 将模拟结果与实验数据进行比较.
主要方法:
- 开发了一种使用辐射基函数进行空间差异化的数值方法.
- 模拟了激光束传播和激光诱导的流体动力学.
- 将该方法应用于以前研究和历史实验中的模型.
主要成果:
- 模拟器准确地复制了由激光诱导的对流热流引起的依赖时间的热膨胀.
- 数值方法允许不规则的点间距和复杂的几何形状.
- 在充满烟雾的室内对300W激光器的模拟显示出与实验观测的良好一致,包括一个半月形的目标点.
结论:
- 开发的数值方法是有效的模拟激光诱导的热开花和流体动力学.
- 导热热流对吸收介质中的激光传播有很大的影响.
- 该研究通过与实验数据进行比较来验证模型和数值方法.
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