直流磁界中の拡散火炎の流れ : 磁界中の円管噴流火炎の火炎軸の湾曲に対する数値解析

概要

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The pressure effect on diffusion flames was investigated in magnetic field at low flow rates of propane gas by using of a rectangular and a circular nozzle. The flame deformation has been studied by the former burner, and the numerical analysis to the inclination of flame axis has been studied by the latter burner. The deformation of the flame was independent of the direction of the magnetic field and was proportional to the two powers of the strength of magnetic field (=H^2). The force acted on the boundary between the flame and the air by the magnetic field was induced by the difference of the volumetric susceptibility of combustion gas, propane gas and air. The numerical analysis to the turn of the flame axis was made at the inflection point of the flame by the use of the relation between the buoyancy force and the force induced by magnetic field. The angle between the direction of the buoyancy force and the flame axis was independent of the momentum of the stream in the axial direction at the point of the flame. The analytical results to the angle of turn at the point showed good agreement with the experimental results.
一般社団法人日本機械学会の論文
1999-03-25