Finite element calculation method for round billet continuous casting solidification heat transfer

The invention discloses a finite element calculation method for round billet continuous casting solidification heat transfer, and relates to the technical field of steel continuous casting. The method comprises the steps that a round billet two-dimensional geometric model is established according to the round billet section size; grid division is conducted on the round billet two-dimensional geometric model, and a round billet two-dimensional finite element model is constructed; establishing a round billet two-dimensional finite element solidification heat transfer model aiming at the round billet continuous casting solidification heat transfer problem; and the temperature field change in the continuous casting process is calculated through the round billet two-dimensional finite element solidification heat transfer model. According to the method, the arc-shaped boundary of the round billet is fully considered, a general quadrilateral unit is adopted, when grids are dense enough, any curve of the boundary of