Accession Number : ADA329722

Title :   Droplet Collision in Liquid Propellant Combustion

Descriptive Note : Final technical rept. 1 Jun 95-31 Jun 97

Corporate Author : PRINCETON UNIV NJ DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s) : Law, Chung K.

PDF Url : ADA329722

Report Date : 31 AUG 1997

Pagination or Media Count : 28

Abstract : Droplet collision is of relevance to spray combustion, intimate!y influencing the spray characteristics in the dense spray region. The present study aims to gain fundamental understanding on the mechanisms governing the observed phenomena of permanent coalescence, bouncing, and separation upon collision. For the present program a computer code was developed for droplet collision, allowing the study of the extent of droplet deformation, the dynamics of interdroplet flow, the relative importance of the gas resistance force as compared to the collisional inertia, and the relevant rheological properties of the gases and liquids. A criterion was derived for the transition from permanent coalescence to coalescence followed by separation.

Descriptors :   *COMBUSTION, *COALESCENCE, *DROPS, *SPRAYS, *ATOMIZATION, EXPERIMENTAL DATA, INERTIA, WATER, GASES, HYDROCARBONS, LIQUID PROPELLANTS, COLLISIONS.

Subject Categories : Physical Chemistry
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE