Atsushi Ishikawa is a Senior Researcher at IHI Corporation, Japan, specializing in energy conversion technologies. His expertise spans thermal energy storage systems, fluidized bed technology, and gas–liquid two-phase flow, with strong foundations in mechanical engineering. He has contributed to both industrial innovation and academic research, combining experimental methods with numerical simulations to advance thermal–fluid sciences. His work supports industrial decarbonization and renewable energy integration, particularly through the development of packed bed and circulating fluidized bed thermal energy storage systems. He has authored multiple peer-reviewed publications, conference papers, and corporate technical articles, and has received professional recognition for excellence in engineering research and measurement techniques.