Laser-induced shock wave (LSW) represents a significant phenomenon arising from the interaction between laser radiation and matter. In this study, we establish a finite element and optimization model constrained by a physical framework. Utilizing multichannel photon Doppler velocimeter experimental data as the target for matching, we directly acquire the spatiotemporal pressure characteristics of LSW through the multi-island genetic algorithm. The optimized outcomes show deviations from experimental results within 10%. Research reveals that the spatial uniformity of pressure deteriorates with increasing power density, accompanied by a gradual reduction in the proportion of peak pressure. Temporally, aside from the pressure caused by plasma, there are some small pressure peaks. When the laser's full width half maximum reaching 100 or 200 ns, the pressure decays prematurely. The duration of pressure does not extend to two to three times the duration of the laser pulse.
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August 2024
Research Article|
July 19 2024
Spatial-temporal characteristics analysis of laser-induced shockwave pressure by reverse optimization with multi-island genetic algorithm
Yuyuan Tang
;
Yuyuan Tang
(Writing – original draft, Writing – review & editing)
1
School of Aerospace Engineering, Xi’an Jiaotong University
, Xi’an, Shaanxi 710049, China
2
National Key Lab of Aerospace Power System and Plasma Technology, Xi’an Jiaotong University
, Xi’an, Shaanxi 710049, China
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Xiangfan Nie
;
Xiangfan Nie
a)
(Funding acquisition, Resources, Supervision)
2
National Key Lab of Aerospace Power System and Plasma Technology, Xi’an Jiaotong University
, Xi’an, Shaanxi 710049, China
3
National Key Lab of Aerospace Power System and Plasma Technology, Air Force Engineering University
, Xi’an, Shaanxi 710038, China
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Haonian Wu;
Haonian Wu
(Investigation, Visualization)
4
School of aeronautics, Chongqing Jiaotong University
, Chongqing 400074, China
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Ming Xu;
Ming Xu
(Investigation, Validation)
2
National Key Lab of Aerospace Power System and Plasma Technology, Xi’an Jiaotong University
, Xi’an, Shaanxi 710049, China
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Li Yan
Li Yan
(Formal analysis, Supervision)
4
School of aeronautics, Chongqing Jiaotong University
, Chongqing 400074, China
5
The Green Aerotechnics Research Institute of CQJTU
, Chongqing 401174, China
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a)
Electronic mail: niexiangfan_kgd@126.com
J. Laser Appl. 36, 032019 (2024)
Article history
Received:
April 16 2024
Accepted:
July 05 2024
Citation
Yuyuan Tang, Xiangfan Nie, Haonian Wu, Ming Xu, Li Yan; Spatial-temporal characteristics analysis of laser-induced shockwave pressure by reverse optimization with multi-island genetic algorithm. J. Laser Appl. 1 August 2024; 36 (3): 032019. https://doi.org/10.2351/7.0001403
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