Resin flow behavior calculation method, and resin flow behavior calculation program

In a resin flow behavior calculation method for predicting the elastic coefficient distribution of a resin material formed by coming into contact with a gaseous body: a shape model of a space filled with the resin material is inputted and is broken down into three-dimensional solid elements on the basis of the space model data; the physical property values of the resin material such as the density, thermal conductivity and specific heat thereof, and boundary conditions at least containing the initial temperature of the resin material, and the heat-transfer coefficient of the resin and the gaseous body are inputted; the elastic coefficient of the resin is inputted as an equation including the changes in the resin temperature; and an equation of continuity, Navier-Stokes equations, and an energy conservation equation are computed on the basis of the three-dimensional solid elements. As a consequence, the distribution of the inputted elastic coefficient of the resin is calculated when calculating the resin temperature, speed and pressure for each time step.