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Atomization and Sprays

Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

Institutional price:	$787.00
Issues per year:	8

Best Paper Award Selection - Editorial Board Site

2006, Volume16

128 pages

Issue price - $80.00

STRUCTURE OF HIGH-VELOCITY DENSE SPRAYS IN THE NEAR-NOZZLE REGION

Franz X. Tanner
Department of Mathematical Sciences, Michigan Technological University, Houghton, Michigan 49931-1295, USA

K. A. Feigl
Department of Mathematical Sciences, Michigan Technological University, Houghton, Michigan 49931-1295, USA

S. A. Ciatti
Center for Transportation Research, Argonne National Laboratory, Argonne, Illinois 60439-4815, USA

Christopher F. Powell
Center for Transportation Research, Argonne National Laboratory, Argonne, Illinois 60439-4815, USA

S.-K. Cheong
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439-4815, USA

J. Liu
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439-4815, USA

Jin Wang
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439-4815, USA

ABSTRACT

Optical and X-ray spray measurements may yield different results when similar quantities are measured. Computer simulations were used to reconcile such differences in the near-nozzle region for high-velocity, dense fuel sprays injected into nitrogen at various gas pressures. It was found that the near-nozzle region consists of a dense core around the spray axis, which contains the majority of the liquid mass, and its radial expansion is not very sensitive with respect to changes in the gas pressure. The remaining liquid mass forms a dilute region away from the spray center; it is responsible for the formation of the optical spray angle and hence varies with the gas pressure according to the known experimental correlations. Further, injection pressure variations of sprays into SF₆ gas showed that the radial expansion of the dense core and the dilute periphery are independent of the injection pressure.