Abstract
We have developed a computational code based on the axisymmetric Navier-Stokes equations with thermochemical kinetics for assessing wave drag reduction and other effects in pulse-energy deposition ahead of a bow shock by means of full simulations from generation of a laser-induced blast wave to interaction with the bow shock. Thermochemical nonequilibrium computations can reproduce the process of blast wave formation with laser ray tracing, and the computed low-density core inside the blast wave has a teardrop-like shape, depending on the laser input condition. The flowfield interacting with a bow shock formed in Mach 5 flow was computed. The result suggests that the shape of the low-density core affects the resultant wave drag, and parameters of an incident laser beam should be taken into account in exploring the optimal condition of the proposed wave-drag scheme.
Original language | English |
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Pages (from-to) | 521-531 |
Number of pages | 11 |
Journal | Shock Waves |
Volume | 22 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2012 Nov |
Keywords
- Pulse energy deposition
- Shock wave
- Wave drag reduction
ASJC Scopus subject areas
- Mechanical Engineering
- Physics and Astronomy(all)