Abstract
This paper summarizes current activities of numerical simulation technology applications to the power and social infrastructure systems related research and development. It is expected that the simulation-driven R & D will be achieved for the development of the power system equipments through the advances of the computer power and the simulation technology. A simulation-driven R & D process is discussed in the paper, which consists of micro-scale and/or meso-scale simulations for estimating basic engineering constants, and macro-scale simulations for determining detailed design of the power systems equipments with using the outputs of the micro-scale and the meso-scale simulations. Examples of these meso-scale and macro-scale simulations are presented. As an example of the application to the R & D for social infrastructure systems, a traffic simulator based on molecular dynamic simulation technology is presented, of which the objective is to evaluate the function of intelligent transport systems (ITS). It is considered that the role of simulation technology will expand in these engineering fields.