レーザシート散乱法による非定常自由噴霧火炎内のすす生成に関する研究

概要

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The two-dimensional distribution of soot particles in an unsteady free spray flame in a rapid compression machine was visualized using the laser sheet scattering technique. Scattered light from soot particles was taken by a CCD camera via a high-speed gated image intensifier. The scattered light image of a 40 mm x 50 mm cross section taken at 70 mm and 90 mm downstrem from the nozzle tip showed that the soot concentration is the highest in the periphery of the flame tip region. The soot concentration in the center of the flame is low and homogeneous at the early stage of the combustion, but later it becomes uneven and higher. As the fuel injection pressure is increased from 55 MPa up to 134 MPa, the soot concentration is considerably reduced, but the uneveness of the soot distribution does not change much.
一般社団法人日本機械学会の論文
1991-04-25