MOFAT: A two-dimensional finite-element program for multiphase flow and multicomponent transport. Program documentation and user's guide

Technical Report · Wed May 01 04:00:00 EDT 1991

OSTI ID:5606452

Katyal, A K; Kaluarachchi, J J; Parker, J C

The manual describes a two-dimensional finite element model for coupled multiphase flow and multicomponent transport in planar or radially symmetric vertical sections. Flow and transport of three fluid phases, including water, nonaqueous phase liquid (NAPL), and gas are considered by the program. The program can simulate flow only or coupled flow and transport. The flow module can be used to analyze two phases, water and NAPL, with the gas phase held at constant pressure, or explicit three-phase flow of water, NAPL, and gas at various pressures. The transport module can handle up to five components which partition among water, NAPL, gas and solid phases assuming either local equilibrium or first-order mass transfer. Three phase permeability-saturation-capillary pressure relations are defined by an extension of the van Genuchten model. The governing equations are solved using an efficient upstream-weighted finite element scheme. The report describes the required inputs for flow analysis and transport analysis. Time dependent boundary conditions for flow and transport analysis can be handled by the program and are described in the report. Detailed instructions for creating data files needed to run the program and example input and output files are given in appendices.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Center for Environmental and Hazardous Material Studies
• OSTI ID: 5606452
• Report Number(s): PB-91-191692/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
COMPUTERIZED SIMULATION
ENVIRONMENTAL TRANSPORT
FINITE ELEMENT METHOD
FLUID FLOW
MASS TRANSFER
MATHEMATICAL MODELS
MULTIPHASE FLOW
NUMERICAL SOLUTION
PERMEABILITY
POLLUTION
SIMULATION
TIME DEPENDENCE
TWO-DIMENSIONAL CALCULATIONS
WATER POLLUTION