高速水素噴流拡散火炎の挙動における実験的研究と数値解析

概要

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Assuming that the flow velocity becomes faster, necking phenomenon occurs in the hydrogen diffusion flame which is watched with interest. The upper stream from a necking part is laminar flow, and the down stream from a necking part is turbulent flow. It is simulated by the CFD software Phoenics. In this study, a necking phenomenon is not simulated in a laminar flow model or turbulence flow model analysis. However, the necking phenomon has been simulated in the analysis, if the upper stream of the flame is laminar and other dowplace as turbulent flow. The results obtained are as follows. Radius velocity toward axis increases in downstream from border below a laminar flow and turbulent flow. And flame surface moves to a core axis directioa Velocity to a center axis direction decreases in downstream from that. And flame surface spread.
神戸市立工業高等専門学校の論文