COMMIX-1C: A Three-Dimensional Transient Single-Phase Computer Program for Thermal-Hydraulic Analysis of Single-Component and Multicomponent Engineering Systems. Volume 1. Equations and Numerics
(Englisch)
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The COMMIX-1C computer program, an extended version of previous single-phase COMMIX codes, is designed to analyze stead-state/transient, single-phase three-dimensional fluid flow with heat transfer in reactor components and multicomponent systems. The concepts of volume porosity, directional surface porosity, distributed resistance, and distributed heat source or sink is used to model a flow domain with stationary structures. The new porous-medium formulation permits a simulation of either a single component or a multicomponent engineering system. The conservation equations of mass, momentum, and energy based on the new porous-medium formulation are solved as a boundary-value problem in space and an initial-value problem in time. Volume I of the report, entitled Equations and Numerics, describes in detail the basic equations, formulations, solution procedures, flow-modulated skew-upwind discretization scheme, models to describe the auxiliary phenomena, etc.
COMMIX-1C: A Three-Dimensional Transient Single-Phase Computer Program for Thermal-Hydraulic Analysis of Single-Component and Multicomponent Engineering Systems. Volume 1. Equations and Numerics