Derivation and Application for Time Step Model in Simulation of Solidification Process

Wen Bang Gong; Li Liang Chen; Jing Hao

doi:10.4028/www.scientific.net/MSF.575-578.14

Paper Titles

Committees

Preface

Three-Dimensional Thermo-Mechanical Finite Element Simulation for Casting Ladle Structure under Thermal Loadings
p.1

Experimental Research of Elevated Temperature Creep and Stress Relaxation during Continuous Straightening
p.7

Derivation and Application for Time Step Model in Simulation of Solidification Process
p.14

The Computer Solidification Simulation of Oceangoing Freighter Rudder Horn
p.22

Microstructures of Rapidly Solidified Hypereutectic Al-Si Alloy with Low-Titanium Content
p.27

Numerical Simulation of Rheo-Diecasting Mould Filling Process of Semisolid Magnesium Alloys
p.32

Numerical Simulation of Induction Heating Process of Continuous Casting Slab
p.37

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Derivation and Application for Time Step Model in Simulation of Solidification Process

Abstract:

The heat transfer during the casting solidification process includes: the heat radiation of the high temperature casting and the mold, the heat convection between the casting and the mold, and the heat conduction in the casting and the casting to the mold. In this paper, a formula of time step in simulation of solidification is derived, considering the heat radiation, convection and conduction based on the conservation of energy. The different heat transfer condition between the ordinary sand casting and the permanent mold casting is taken into account in this formula. The characteristic of heat transfer in the interior and surface of the casting is also considered. The numerical experiments show that this formula can avoid radiation of the computation, and can improve the computational efficiency about 20% in the simulation of solidification process.