Accession Number : ADA604531


Title :   Numerical Simulations of Evaporating Sprays in High Pressure and Temperature Operating Conditions (Engine Combustion Network [ECN])


Descriptive Note : Final rept. Sep-Dec 2013


Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD VEHICLE TECHNOLOGY DIRECTORATE


Personal Author(s) : Bravo, Luis ; Kweon, Chol-Bum


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a604531.pdf


Report Date : May 2014


Pagination or Media Count : 34


Abstract : A series of evaporating n-dodecane spray numerical studies are conducted under typical diesel engine operating conditions. The objective of this report is to demonstrate the modeling capability of a recently adopted 3D-Computational Fluid Dynamics (CFD) solver and provide expertise in simulations of complex multiphase flows. Two benchmark cases were selected based on the Engine Combustion Network (ECN) collaborators from Sandia National Laboratories (U.S.), and CMT-Motores (Spain). The simulations results were able to accurately predict the results including the standardized Spray A single condition at rail pressure 1500 bar and ambient conditions of 900 K and 60 bar (Sandia), and the more challenging conditions including variations in rail pressure 500-1500 bar and fuel temperatures 331-377 K (CMT-Motores). The results show the ability of the simulations to be predictive at various challenging conditions. Similar capabilities are presently available at the U.S. Army Research Laboratory's (ARL's) Spray Combustion Research Laboratory and hence this study provides the benchmarking needed to enable next-phase simulations of our in-house JP-8 data.


Descriptors :   *FUEL SPRAYS , *SIMULATION , COMBUSTION , COMPUTATIONAL FLUID DYNAMICS , DIESEL ENGINES , DIESEL FUELS , EVAPORATION , JET ENGINE FUELS , MULTIPHASE FLOW , PRESSURE , TEMPERATURE , THREE DIMENSIONAL , TURBULENCE


Subject Categories : Fluid Mechanics
      Combustion and Ignition
      Fuels
      Reciprocating and Rotating Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE