Abstract
An experimental study carried out aboard the Mirstation showed that a stearin candle can burn for a long time even inside a closed volume without a forced circulation. Such experiments imply that there is some mechanism for a permanent transport of the oxidizer to the flame zone. It can be assumed that a jet of combustion products outflowing along a normal direction with respect to the flame surface produces a vortex motion in the environmental space, which delivers oxygen to the flame zone. To verify the feasibility of combustion to be sustained by such a mechanism, a mathematical statement of the problem of combustion inside a closed region under zero gravity without a forced circulation was formulated. A simplified model was put forward to simulate the combustion of solid and liquid substances, which allowed the effects of chemical reactions to be reduced to boundary conditions. The computations showed that the proposed mechanism of oxygen transport to the flame zone really can sustain an almost stationary regime of combustion.
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REFERENCES
Dietrich, D., Ross, H.D., and Frate, D.T., Candle Flames in Microgravity, Fourth Int. Microgravity Combustion Workshop, Proc. Conf. Held at Cleveland Sheraton City Centre Hotel Cleveland, Ohio, 1997, NASA Conf. Publ. 10 194, pp. 237-242.
Lapin, Yu.V. and Strelets, M.Kh., Vnutrennie techeniya gazovykh smesei (Internal Flows of Gas Mixtures), Moscow: Nauka, 1989, p. 368.
Vasil'tsov, G.L. and Kryukov, I.A., Numerical Method of Solving the Navier-Stokes Equations Describing Flows of Incompressible Viscous Liquid on the Collocational Curvilinear Grid, Preprint of Inst. for Problems in Mechanics, Russ. Acad. Sci., 1997, no. 594, p. 47.
Sazonov, V.V., Komarov, M.M., Polezhaev, V.I., et al., Microaccelerations onboard the Mir Orbital Station and Prompt Analysis of Gravitational Sensitivity of Convective Processes of Heat and Mass Transfer, Kosm. Issled., 1999, vol. 37, no. 1, pp. 86-101.
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Glushko, G.S., Kryukov, I.A. One Possible Mechanism to Sustain Combustion inside a Closed Region under Zero Gravity. Cosmic Research 39, 192–200 (2001). https://doi.org/10.1023/A:1017507530586
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DOI: https://doi.org/10.1023/A:1017507530586