Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

For Online Access

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2006, Volume16

Issue 6

133 pages

DOI: 10.1615/AtomizSpr.v16.i6

Issue price - $80.00

Tamas Jakubik
Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2, 616 69 Brno, Czech Republic

Malcolm Lawes
School of Mechanical Engineering, The University of Leeds, LS6 9JT Leeds, UK

Robert M. Woolley
Energy and Resources Research Institute, School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9JT, UK

Miroslav Jicha
Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2, 616 69 Brno, Czech Republic

This study investigates the influence of the ambient turbulence on a pressure-atomized diesel-like spray in the well-characterized and controlled turbulence flow field of a fan-stirred experimental vessel. Injections were performed into nitrogen at 15 bar and 400 K under four turbulent conditions, with RMS velocities ranging from 0.5 up to 5.5 m/s. Mie scatter laser sheet and Schlieren techniques were applied to visualize the liquid and the vapor phase of the spray. With increasing turbulence, there was increasing formation of droplet clusters and ligaments, which resulted in a reduced detection of droplet vapor along the whole penetration length of the spray. From considerations of the Stokes numbers for the droplet-turbulence interaction, it is concluded that the microlength scales of the ambient turbulence were the probable source of this droplet clustering.

DOI: 10.1615/AtomizSpr.v16.i6.60 Download article, 687-704 pages

Article price - $35.00

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