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Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

Institutional price:	$586.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2006, Volume13

115 pages

DOI: 10.1615/JFlowVisImageProc.v13.i3

Issue price - $154.00

VISUALIZATION OF SUPERSONIC LIQUID FUEL JETS

K. Pianthong
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Australia; Department of Mechanical Engineering, Faculty of Engineering, Ubonratchathani University, Ubonratchathani, Thailand

A. Matthujak
Interdisciplinary Shock Wave Research Center, Institute of Fluid Science, Tohoku University, Sendai, Japan

K. Takayama
Shock Wave Research Center, Institute of Fluid Science, Tohoku University, Sendai, Japan

T. Saito
Muroran Institute of Technology, Hokkaido, Japan

Brian E. Milton
Computational Fluid Dynamics Research Laboratory, School of Mechanical and Manufacturing Engineering, The University of New South Wales; Faculty of Engineering, University of Technology Sydney, Sydney, Australia 2052

ABSTRACT

Results from further studies on supersonic liquid fuel jets injected into ambient air conditions are reported in this paper. In the study, a special technique, the projectile impact driven method, is used to generate supersonic liquid fuel jets. A high-speed video camera and a shadowgraph optical system are employed to obtain visualizations. Effects of fuel properties and nozzle geometries on the characteristics, tip velocity, and penetration distance of the jets are the main focus. Strong multiple high-frequency jet pulses generated within the duration of a single shot impact are usually found in the conical nozzle but are less obvious in the nonconical nozzle. These associated multiple jet shock waves have been clearly captured in the visualization. In addition, the preliminary study on the numerical simulation of supersonic liquid (water) jets using AUTODYN-2D^TM code is presented. Some characteristics such as jet tip velocity, jet shock wave angle, and pulsing behavior can be predicted. Overall, at this stage, the results show good promise for further development of this type of simulation.