Abstract
In order to utilize numerical analysis techniques in the actual design process, not only the numerical analysis techniques themselves, but the procedures for applying those techniques in the design, were examined According to the stage of a design, the example of application of numerical analysis and visualization in the design of an electric equipment was divided into the system performance analysis which drops a product concept on a system function, the layout analysis which determines a system function to a part layout, and the parameter analysis which determines the design parameter of each part. The progress of the numerical technology for product planning is expected. The product development process requires not only numerical simulation based on physics but also statistical approach.
