CONCHAS-SPRAY: a computer code for reactive flows with fuel sprays

Technical Report · Sat May 01 04:00:00 EDT 1982

OSTI ID:5201365

Cloutman, L D; Dukowicz, J K; Ramshaw, J D; Amsden, A A

This report describes the CONCHAS-SPRAY computer code, which solves the equations of transient multicomponent chemically reactive fluid dynamics, together with those for the dynamics of an evaporating liquid spray. The code is of quite general applicability, but has been developed with applications to internal combustion engines specifically in mind. The formulation is spatially two-dimensional, and encompasses both planar and axisymmetric geometries. In the latter case, the flow is permitted to swirl about the axis of symmetry. CONCHAS-SPRAY is a time-marching finite-difference code that uses a partially implicit numerical scheme. Spatial differences are formed with respect to a generalized two-dimensional mesh of arbitrary quadrilaterals whose corner locations are specified functions of time. This feature allows a Lagrangian, Eulerian, or mixed description, and is particularly useful for representing curved or moving boundary surfaces. Arbitrary numbers of species and chemical reactions are allowed. The latter are subdivided into kinetic and equilibrium reactions, which are treated by different algorithms. A turbulent law-of-the-wall boundary layer option is provided. The governing equations, numerical scheme, and code structure are described in detail, and a FORTRAN listing of the code is given in an appendix.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5201365
• Report Number(s): LA-9294-MS; ON: DE82017385
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
025000 -- Petroleum-- Combustion
33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AUTOMOTIVE FUELS
C CODES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION KINETICS
COMPUTER CODES
DROPLETS
ENGINES
FLUID FLOW
FUELS
HEAT ENGINES
IGNITION
INTERNAL COMBUSTION ENGINES
KINETICS
LIQUID FUELS
MATHEMATICAL MODELS
PARTICLES
PRESSURE GRADIENTS
REACTION KINETICS
SPRAYS
TWO-PHASE FLOW