年間 4 号発行
ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336
Indexed in
A VISUALIZATION STUDY OF DUAL SPRAY INTERACTION OF A DUAL-ORIFICE FUEL INJECTOR AT LOW PRESSURE DROP
要約
A visualization study on the interaction of a dual-swirl spray was performed with water injection at relatively low pressure. A fluorescent material (Rhodamin B) was added to the water for better visualization of the water film near the nozzle exit. The elastic scattering is dominant for the well-atomized inner spray, but the fluorescence is dominant for the outer spray. A bubble-in-bubble mode is observed for the dual spray due to the difference in cone angle. The outer bubble contracts as the pressure inside the bubble decreases by increasing the flow rate of the inner spray, and two bubbles finally coalesce and open. The dynamics of the dual-swirl spray is influenced by the distribution of air pressure around the spray, which may be changed due to the spray interaction.
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