Structure of high-pressure fuel sprays

Conference · Wed Dec 31 23:00:00 EST 1986

OSTI ID:6514253

Reitz, R D; Diwakar, R

A multi-dimensional model was used to calculate interactions between spray drops and gas motions close to the nozzle in dense high-pressure sprays. The model also accounts for the phenomena of drop breakup, drop collision and coalescence, and the effect of drops on the gas turbulence. The calculations used a new method to describe atomization (a boundary condition in current spray codes). The method assumes that atomization and drop breakup are indistinguishable processes within the dense spray near the nozzle exit. Accordingly, atomization is prescribed by injecting drops ('blobs') that have a size equal to the nozzle exit diameter.

• Research Organization: Fluid Mechanics Dept., GM Research Labs., Warren, MI
• OSTI ID: 6514253
• Report Number(s): CONF-870204-
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ATOMIZATION
BOUNDARY CONDITIONS
COMPUTER CODES
COMPUTERIZED SIMULATION
DROPLETS
ENGINES
EVAPORATION
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
HYDRAULICS
INTERACTIONS
INTERNAL COMBUSTION ENGINES
MATHEMATICAL MODELS
MECHANICS
PARTICLES
PHASE TRANSFORMATIONS
PRESSURE DEPENDENCE
SIMULATION
SPRAYS
THREE-DIMENSIONAL CALCULATIONS
TURBULENT FLOW
TWO-DIMENSIONAL CALCULATIONS