Environmental temperature field of a 250 t ladle in a large steelmaking plant was numerically simulated by the accurate finite element model and the equivalent finite element model,respectively.The accurate finite element model adopted the full-scale modeling,and considered the heat conductions between the ladle components and between the molten steel and the ladle,the boundary layer effect of heat flow,the convective and radiative heat transfer between the ladle and environment according to the thermal-fluid-solid coupling finite element theory.The equivalent finite element model simplified the ladle to a cylinder with an equivalent heat source,and used the two-dimensional heat source surface for equivalently replacing the heat effects of the ladle with complex three-dimensional structure according to the theory of heat radiation and heat convection,to simulate the heat radiation and heat convection of the ladle in the surrounding environment,the thermal-fluid-solid coupling problem was reduced to the thermal-fluid coupling problem,thereby reducing the occupation of computational resources and significantly increasing computational efficiency.The comparison of simulated results showed that the equivalent finite element model had high computational efficiency,accurate and reliable simulation results.
finite element methodladletemperature fieldnumerical simulation
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