Numerical investigation of magnetic field effect on hydrogen flame

Document Type : Research Paper

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Abstract

In this article, effect of magnetic field on hydrogen diffusion flame (30% hydrogen volume fraction and 70% nitrogen volume fraction) in terms of flame shape, heat of reaction source and amount of unburnt hydrogen in products parameters is investigated. The magnetic field is applied directly to the flame region for the magnitude of 0.5, 1, 1.5, 2, 2.5, and 3 tesla. It is found that the flame shape and the flame height become smaller with the application of magnetic field. It is also found that the magnetic field reduces the obtained unburnt hydrogen quantity at Y=1 mm. In fact, magnetic field presence produces Lorentz force which opposes the flow direction. Consequently, the more the magnitude of magnetic field, the more the reaction source heat and the shorter the flame height will become. These results represent that the magnetic field causes more complete combustion and less pollutant production. It is noted that magnetic field effect on governing equations, Lorentz force and Joule heating are added to the momentum and energy equation respectively by using C programming.

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References

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