Three-dimensional, conservation equation model for simulating LNG vapor dispersion in the atmosphere

Technical Report · Tue Sep 01 04:00:00 EDT 1981

OSTI ID:5824002

Chan, S T; Gresho, P M; Ermak, D L

A numerical model for simulating the vapor spread and dispersion associated with LNG releases in the atmosphere is described. The model is based on solving the set of three-dimensional, time-dependent, conservation equations governing incompressible flows. Spatial discretization is performed via a modified Galerkin finite element method (GFEM), and time integration is carried out via the forward Euler method (pressure is computed implicitly, however). Several cost-effective techniques (including subcycling, mass lumping, and reduced Gauss-Legendre quadrature) which have been implemented are discussed. Numerical results obtained using this model are presented and compared in separate reports.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• OSTI ID: 5824002
• Report Number(s): UCID-19210; ON: DE82001053
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030800 -- Natural Gas-- Environmental Aspects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCIDENTS
AIR POLLUTION
DISPERSIONS
DISTRIBUTION
EARTH ATMOSPHERE
ENERGY SOURCES
EVAPORATION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GAS SPILLS
GASES
LEAKS
LIQUEFIED GASES
LIQUEFIED NATURAL GAS
MATHEMATICAL MODELS
NATURAL GAS
PHASE TRANSFORMATIONS
POLLUTION
SIMULATION
SPATIAL DISTRIBUTION
THREE-DIMENSIONAL CALCULATIONS
VAPORS