エンジン燃焼解析ソフトウエアHINOCAの富岳上での大規模計算

<p>It is necessary to create new technologies more than ever in order to comply with the increasingly strict fuel efficiency and exhaust gas regulations of automobiles. In order to create new technologies, it is necessary to understand the combustion phenomena in the engine in detail and to verify the ideas, and for that purpose, it is effective to utilize numerical simulation. Even in recent years, CPU and network performance have been continuously improved and the prices have been declining, making it easier to use high-speed computers for simulation. Currently, quasi-steady CAE is being actively used in product research and development by each company, but in the future it will be necessary to handle unsteady and transient phenomena that take place in reality, and for that purpose, further computer performance is needed. In such a situation, Fugaku, the world-wide highest-end computer started its operation in 2020, and it has the potential to perform calculations that were previously impossible. We analyze engine combustion on Fugaku using HINOCA, which was constructed in "SIP innovative combustion technology" and has been evolved at AICE (the research association of Automotive Internal Combustion Engines), and success in obtaining results that could not be obtained with conventional computers. By evaluating them, we plan to explore new ways to utilize next-generation HPC (High Performance Computing) that will contribute to the realization of carbon neutrality. In this paper, we will explain the application contents for Fugaku usage, the outline of HINOCA, and the plan of concrete calculation contents such as cycle-to-cycle variation calculation and PM/PN calculation.</p>