COMMIX-1B: a three-dimensional transient single-phase computer program for thermal hydraulic analysis of single and multicomponent systems. Volume II. User's manual

Technical Report · Sun Sep 01 04:00:00 EDT 1985

OSTI ID:6050993

The COMMIX-1B computer program is an extended version of COMMIX-1A with three major additions: (1) three more turbulence-model options for the computation of turbulent diffusivities, (2) a volume-weighted skew-upwind difference scheme to reduce numerical diffusion, and (3) a single formulation to combine semi-implicit and fully implicit solution procedures. COMMIX-1B solves the conservation equations of mass, momentum, and energy, and transport equations of turbulence parameters. It is designed to perform steady-state/transient, single-phase, three dimensional analysis of fluid flow with heat transfer in a single component of a multicomponent system. The program is developed for the analysis of heat transfer and fluid flow processes in a nuclear reactor system. However, it is designed in a generalized fashion such that with no or minimal modification, it can be used to analyze processes in any engineering equipment, or in any system. An extension from COMMIX-1A to COMMIX-1B has been performed without altering the original format and structure of COMMIX-1A. Consequently, a COMMIX-1A user can run a COMMIX-1A problem on the COMMIX-1B version without any difficulty or changes in the input. This report contains the input instruction, sample problems, flow charts, and description of available options and boundary conditions. 22 refs., 54 figs., 24 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6050993
• Report Number(s): NUREG/CR-4348-Vol.2; ANL-85-42-Vol.2; ON: TI86005238
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
COMPUTERIZED SIMULATION
DOCUMENT TYPES
ENERGY TRANSFER
FINITE DIFFERENCE METHOD
FLUID FLOW
FLUID MECHANICS
HEAT EXCHANGERS
HEAT TRANSFER
HYDRAULICS
ITERATIVE METHODS
MANUALS
MECHANICS
NUMERICAL SOLUTION
RECOMMENDATIONS
ROD BUNDLES
SIMULATION
THREE-DIMENSIONAL CALCULATIONS