Abstract
For laser propulsion systems, it is important to analyze the mechanism of Laser-Supported Shock Waves, which are caused by laser absorption. The main absorption mechanism is Inverse Bremsstrahlung: The laser energy is transformed into the kinetic energy of free electrons by photon absorption during electron-ion/neutral collision, which is re-distributed among heavy particles through collisions. In this paper, we numerically simulate a room-temperature Argon gas which absorbs CO2 gasdynamic laser, using a 2-Temperature model. As a numerical method, we have used Harten-Yee non-MUSCL modified-flux-type TVD scheme in which real gas effects are considered. Detailed discussions are given on the mechanism of Laser-Supported Shock Wave propagation.
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