Accession Number : ADA310062

Title :   ALLSPD-3D. Version 1.Oa.

Descriptive Note : Technical memo.,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Chen, K. H. ; Duncan, B. ; Fricker, D. ; Lee, J. ; Quealy, A.

PDF Url : ADA310062

Report Date : APR 1996

Pagination or Media Count : 166

Abstract : This report describes the ALLSPD-3D computer program for the calculation of thee-dimensional, chemically reacting flows with sprays. ALLSPD-3D employs a coupled, strongly implicit solution procedure for turbulent spray combustion flows. ALLSPD-3D utilizes generalized curvilinear coordinates with both multi-block and flexible internal blockage capabilities to handle complex geometries. The ALLSPD-3D algorithm, which employs preconditioning and eigenvalue rescaling techniques, is capable of providing efficient solution of flows over a wide range of subsonic Mach numbers. The chemistry treatment in the code is general enough that an arbitrary number of reactions and species can be defined by the users. In addition, for general industrial combustion applications, the code provides both dilution and transpiration cooling capabilities. A stochastic spray model and an efficient method for treating the spray source terms in the gas-phase equations are used to analyze evaporating spray droplets. Although written for three-dimensional flows, the code can be used for two-dimensional and axisymmetric flow computations as well. The code is written in such a way that it can be run on various computer platforms (supercomputers, workstations, and parallel processors) while the GUI (Graphical User Interface) should provide a user-friendly tool for setting up and running the code.

Descriptors :   *COMPUTER PROGRAM DOCUMENTATION, *COMPUTATIONAL FLUID DYNAMICS, *GAS TURBINES, DATA BASES, MATHEMATICAL MODELS, ALGORITHMS, USER MANUALS, STOCHASTIC PROCESSES, EQUATIONS OF MOTION, DATA MANAGEMENT, REACTION KINETICS, INPUT OUTPUT PROCESSING, TURBULENCE, TURBULENT FLOW, EDDIES(FLUID MECHANICS), EIGENVALUES, PARALLEL PROCESSING, VAPOR PHASES, FINITE DIFFERENCE THEORY, COMBUSTORS, MASS FLOW, COMPRESSIBLE FLOW, FLOW FIELDS, TEMPERATURE GRADIENTS, CONVERGENCE, HYDRODYNAMIC CODES, TRANSPIRATION, MACH NUMBER, SUBSONIC FLOW, EVAPORATION, COMPUTER FILES, CONVECTION(HEAT TRANSFER), NAVIER STOKES EQUATIONS, VISCOSITY, SPRAYS, REYNOLDS NUMBER, TWO PHASE FLOW, USER FRIENDLY, THREE DIMENSIONAL FLOW, AXISYMMETRIC FLOW.

Subject Categories : Computer Programming and Software
      Fluid Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE