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Effect of Solid Body Rotating Swirl on Spray Structure
Published June 28, 1996 by Society of Automotive Engineers of Korea in South Korea
Event: KSAE Spring Conference
A constant volume chamber which contains water was rotated in order to simulate solid body rotating swirl in direct injection diesel engines. The swirl number of the chamber linearly depends on the rotating speed of the chamber. Emulsified fuel was injected into water, which simulate high fuel injection into a high pressure gaseous constant volume chamber. Visualization of the fuel spray developing process in D.I. diesel engine was investigated by this liquid injection technique. The effect swirl number on the spray tip penetration and break-up length was investigated by experiment and modelling. Dispersion characteristics of fuel spray was also investigated according to the swirl number.