A computer-readable recording medium stores a rendering program that renders simulation results and causes a computer to execute a process that includes detecting a range of physical values of a rendering element group to be rendern and of an area specified in a simulation model that is a set of elements each having a physical value for each position to be simulated; identifying from the simulation model, an adjacent element group that is a set of elements adjacent to rendering elements included in the rendering element group; determining whether the physical value of each adjacent element included in the adjacent element group is within the range; adding to the rendering element group, an adjacent element for which the physical value is determined to be included in the range; and rendering the simulation model according to the rendering element group to which the adjacent element has been added.