NUMERICAL STUDY OF ENERGETIC PARAMETERS OF A SUPERSONIC CHEMICAL OXYGEN-IODINE LASER WITH FLOW MIXING VARIATIONS
Yu. N. Deryugin, B. A. Vyskubenko, D. K. Zelenskiy, S. P. Il`in, Yu. V. Kolobyanin, E. A. Kudryashov
VANT. Ser.: Mat. Mod. Fiz. Proc 2012. Вып.4. С. 27-38.
The paper presents a mathematical model and a 3D computational technique for studying the structure of non-equilibrium flows and determining the energy characteristics of a chemical oxygen-iodine laser. The mathematical model includes the main kinetic processes in an active medium of the laser and the processes of generating laser radiation both in stable and unstable resonators. A 3D computational technique is based on solving both complete and parabolic Navier-Stokes equations and allows describing non-equilibrium fluxes of subsonic and supersonic flows (including those in the resonator area), and supersonic flow mixing, as well as determining the energy parameters of the laser.
The energy parameters of a supersonic oxygen-iodine laser with mixing devices of various types have been studied numerically. For each type of mixing device, there have been identified optimum conditions with respect to geometry and composition of the injected gas under which maximum values of the laser energy parameters can be implemented. It is demonstrated that all the studied configurations of mixing devices are acceptable and allow achieving high enough energy parameters of the laser. Maximum values of parameters - radiation power ≈ 99 kW, specific energy rejection 300 J/g, chemical efficiency 35% - have been achieved for a nozzle unit with a three-row tube injector and this result is in a good agreement with the achieved results of experiments.Keywords: chemical oxygen-iodine laser, mathematical model, computational technique, radiation generation parameters, chemical efficiency.
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