Extraction Method and Evaluation of Shape for Flame Cross Section of Premixed Turbulent Combustion in Constant Volume Combustion Chamber by Image Measurement

概要

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To clarify the mechanism of turbulent combustion from a view point of physical data, premixed turbulent combustion in a constant volume combustion chamber was researched. Flame shape was measured as cross sectional image by laser sheet method. The most suitable method for extraction of flame front was examined and flame shape was evaluated as complexity of flame outline by fractal dimension. The results showed that the image processing method using frequency filter was suitable for extraction of correct flame front. Fractal dimension of flame shape was increased by turbulence intensity. Furthermore it was kept constant value at each turbulence intensity during growth of flame.
社団法人日本マリンエンジニアリング学会の論文