Dr. Vijay Kumar is a Mechanical Engineer, specializing in green hydrogen production, renewable energy systems, thermal engineering, nanofluids, computational fluid dynamics (CFD), process modelling and simulation. His research focuses on integrating renewable energy sources with water electrolysis for sustainable hydrogen generation, improving energy conversion efficiency, optimizing thermo-economic and fluid-flow systems. He has published various SCI, and SCOPUS indexed research papers in reputed international journals, contributed book chapters, and presented his work at international conferences. His technical expertise encompasses CFD-based numerical modelling, process simulation using ASPEN Plus, and computer-aided design, engineering, and manufacturing (CAD/CAE/CAM). He holds B.Tech. and M.Tech. degrees in Mechanical Engineering and completed his doctoral research at the Institute of Engineering & Technology, Lucknow, under the AICTE Doctoral Fellowship. His professional knowledge also includes industrial exposure to design engineering, digital mapping, and quality assurance. His interdisciplinary research interests include clean hydrogen technologies, renewable energy integration, sustainable thermal systems, advanced heat transfer, and energy-efficient engineering solutions. Through his research and technical competencies, he aims to contribute to the development of innovative, resource-efficient, and environmentally sustainable technologies while supporting advancements in mechanical engineering education, scientific research, and technology development.