Symmetric and asymmetric shocked gas jets for laser-plasma experiments
| Autor: | Lucas Rovige, Paulius Gečys, Aline Vernier, F. Sylla, Igor Andriyash, Gediminas Račiukaitis, Valdas Girdauskas, Jérôme Faure, Vidmantas Tomkus, Juozas Dudutis, Julius Huijts, Valdemar Stankevič |
|---|---|
| Přispěvatelé: | Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Center for Physical Sciences and Technology [Vilnius] (FTMC) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics - Instrumentation and Detectors
Materials science Nozzle Rotational symmetry FOS: Physical sciences Computational fluid dynamics 01 natural sciences Physics::Fluid Dynamics Shock position [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] 0103 physical sciences Supersonic speed [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] 010306 general physics Instrumentation Astrophysics::Galaxy Astrophysics Jet (fluid) 010308 nuclear & particles physics business.industry Fluid Dynamics (physics.flu-dyn) Physics - Fluid Dynamics Instrumentation and Detectors (physics.ins-det) Plasma Mechanics Physics - Plasma Physics [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph] Plasma Physics (physics.plasm-ph) Oblique shock business |
| Zdroj: | Review of Scientific Instruments Review of Scientific Instruments, American Institute of Physics, 2021, 92 (8), pp.083302. ⟨10.1063/5.0051173⟩ |
| ISSN: | 0034-6748 1089-7623 |
| Popis: | International audience; Shocks in supersonic flows offer both high density and sharp density gradients that are used, for instance, for gradient injection in laser-plasma accelerators. We report on a parametric study of oblique shocks created by inserting a straight axisymmetric section at the end of a supersonic “de Laval” nozzle. The effect of different parameters, such as the throat diameter and straight section length on the shock position and density, is studied through computational fluid dynamics (CFD) simulations. Experimental characterizations of a shocked nozzle are compared to CFD simulations and found to be in good agreement. We then introduce a newly designed asymmetric shocked gas jet, where the straight section is only present on one lateral side of the nozzle, thus providing a gas profile well adapted for density transition injection. In this case, full-3D fluid simulations and experimental measurements are compared and show excellent agreement. |
| Databáze: | OpenAIRE |
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