B-4 燃料噴射弁近傍における液膜微粒化過程に関する研究(燃焼I,一般講演)

概要

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Aiming at elucidation and prediction of near-field atomization characteristics of liquid sheet at fuel injector, numerical method was developed and applied to atomization phenomena at pressure swirl atomizer. Firstly, the method was verified through quantitative comparisons with corresponding experiment concerning pinch off. Numerical and experimental results showed satisfactorily good agreement. Then theoretical and numerical analyses were performed on atomization of axisymmetric liquid sheet, which was produced by collision of two water jets in opposite direction. The numerical results of the atomization process through Kelvin-Helmholtz type of instability showed qualitative resemblance with theoretical results. Finally, an atomization characteristic at pressure swirl atomizer was numerically analyzed as a preliminary investigation. Three dimensional liquid distributions at the near field of injector were presented, where experimental measurement was distinctly difficult.
公益社団法人日本ガスタービン学会の論文
2008-10-01