A FEM model for the calculation of heat and fluid flows in DC casting of aluminum slabs
Book
·
OSTI ID:227807
- Hydro Aluminium, Sunndalsoera (Norway)
- Inst. for Energiteknikk, Kjeller (Norway)
A 3D FEM model for the solution of time dependent incompressible flows with solidification and natural convection is presented. In the mush zone the momentum equations are modified with a Darcy type source term dependent on the liquid fraction. The numerical method applies a fractional step method for the dynamic Navier Stokes equations and the Streamline Upwind Petrov-Galerkin (SUPG) method for mixed diffusion and convection in the momentum and energy equations. The model is used to simulate the stationary period during DC-casting of a full size commercial rolling ingot, with a nozzle/filterbag distributor system. Comparisons with measured temperatures in liquid aluminum during casting are made, as well as with DAS measurements. Influence of natural convection turbulence by the LRN {kappa}-{var_epsilon} model and permeability of the mushy zone are studied.
- OSTI ID:
- 227807
- Report Number(s):
- CONF-9509118--; ISBN 0-87339-297-3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
99 GENERAL AND MISCELLANEOUS
ALUMINIUM ALLOYS
BOUNDARY CONDITIONS
CASTING
CONVECTION
DARCY LAW
DENDRITES
EXPERIMENTAL DATA
IRON ADDITIONS
MAGNESIUM ADDITIONS
MATHEMATICAL MODELS
NAVIER-STOKES EQUATIONS
PERMEABILITY
REYNOLDS NUMBER
SIMULATION
SOLIDIFICATION
TEMPERATURE GRADIENTS
THREE-DIMENSIONAL CALCULATIONS
TURBULENCE
99 GENERAL AND MISCELLANEOUS
ALUMINIUM ALLOYS
BOUNDARY CONDITIONS
CASTING
CONVECTION
DARCY LAW
DENDRITES
EXPERIMENTAL DATA
IRON ADDITIONS
MAGNESIUM ADDITIONS
MATHEMATICAL MODELS
NAVIER-STOKES EQUATIONS
PERMEABILITY
REYNOLDS NUMBER
SIMULATION
SOLIDIFICATION
TEMPERATURE GRADIENTS
THREE-DIMENSIONAL CALCULATIONS
TURBULENCE