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Study of the Bow Shock Interaction with Laser-Pulse-Heated Air Bubbles

Schülein, Erich and Zheltovodov, Alexander A. and Pimonov, E. A. and Loginov, M. S. (2009) Study of the Bow Shock Interaction with Laser-Pulse-Heated Air Bubbles. 39th AIAA Fluid Dynamics Conference and Exhibit, 2009-06-22 - 2009-06-25,, San Antonio (TX), USA.

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The influence of various parameters characterizing the single- and double-pulse energy deposition (ED) upstream of a blunt body (distance between the deposition point and the body, amount of the energy and time delay between the pulses) on the topology of the supersonic flow at Mach 2 is studied experimentally and numerically. The obtained pressure-time diagram at the upstream stagnation point of the body as well as some significant topological properties of the bow-shock / heated-bubble interaction, like shock deformation and reflection, as well as the evolution of the heated bubble into vortex rings downstream, are analyzed as resulting from the shock-decelerated spherical light-gas inhomogeneity. The evolution and topology of the interfering heated bubbles by double-pulse ED show the significance of vorticity generation initiated by blast-waves coming from the neighboring bubbles.

Item URL in elib:https://elib.dlr.de/55964/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Study of the Bow Shock Interaction with Laser-Pulse-Heated Air Bubbles
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Zheltovodov, Alexander A.ITAM NovosibirskUNSPECIFIED
Pimonov, E. A.ITAM NovosibirskUNSPECIFIED
Loginov, M. S.ITAM NovosibirskUNSPECIFIED
Date:22 June 2009
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:1-26,
Series Name:AIAA-Paper
Keywords:Bow shock wave, Energy deposition, Laser, laser-induced heating, Optical discharge, Experiment, CFD, Wave drag
Event Title:39th AIAA Fluid Dynamics Conference and Exhibit
Event Location:San Antonio (TX), USA
Event Type:international Conference
Event Dates:2009-06-22 - 2009-06-25,
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Schülein, Dr.rer.nat. Erich
Deposited On:03 Nov 2008
Last Modified:12 Dec 2013 20:33

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