| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Heat Transfer and Mode Transition for Laser Ablation Subjected to Supersonic Airflow |
| Yi-Hui Huang, Hong-Wei Song**, Chen-Guang Huang |
Key Laboratory for Mechanics in Fluid-Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190
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| Cite this article: |
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Yi-Hui Huang, Hong-Wei Song, Chen-Guang Huang 2016 Chin. Phys. Lett. 33 014201 |
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Abstract When laser ablation is subjected to supersonic flow, the influence mechanism of airflow on laser ablation behavior is still unclear. A coupled thermal-fluid-structure model is presented to investigate the influence of supersonic airflow on the development of a laser ablation pit. Results show that the aerodynamic convection cooling effect not only reduces the ablation velocity but also changes the symmetry morphology of the ablation pit due to the non-uniform convective heat transfer. Flow mode transition is also observed when the pit becomes deeper, and significant change in flow pattern and heat transfer behavior are found when the open mode is transformed into the closed mode.
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Received: 29 May 2015
Published: 29 January 2016
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