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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes >Entropy Production due to Time Exponentially Varying Laser Pulse: Convective Boundary Condition Case
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Entropy Production due to Time Exponentially Varying Laser Pulse: Convective Boundary Condition Case

机译：时间随激光脉冲指数变化而产生的熵：对流边界条件的情况

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摘要

Laser pulse heating with convective boundary at the surface finds applications in laser gas-assisted processing. Thermodynamic irreversibility associated with the thermal system can be quantified through entropy production. Consequently, in the present study, analytical formulation of entropy production is carried out for exponentially varying time laser pulse heating with convective boundary condition at the surface. Entropy ratio (ratio of entropy produced to its counterpart corresponding to the no-convection-boundary situation at the surface) is introduced. It is found that entropy production is low in the early heating period. The influence of heat transfer coefficient on entropy production is significant in the surface region, which becomes more pronounced as the heating period progresses.
机译：在表面具有对流边界的激光脉冲加热在激光气体辅助处理中得到了应用。与热系统相关的热力学不可逆性可以通过熵产生来量化。因此，在本研究中，对表面产生对流边界条件的指数变化时间的激光脉冲加热，进行了熵产生的解析公式。引入了熵比（对应于表面无对流边界的情况下产生的熵与其对应的熵之比）。发现在加热的早期熵产生较低。传热系数对熵产生的影响在表面区域中是显着的，随着加热时间的进行，这一点变得更加明显。

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