Dr. Donna Post Guillen is a Group Lead for Modeling and Simulation in the Materials Science and Engineering Department and also is a Distinguished Researcher with over 35 years of research and engineering experience. She has served as Principal Investigator (PI)/Technical Lead for numerous multidisciplinary projects encompassing waste heat recovery, heat exchangers, power conversion systems, nuclear reactor fuels and materials experiments, waste vitrification, and advanced manufacturing. Her core area of expertise is computational fluid dynamics and heat transfer modeling of energy systems, materials and thermal fluid systems. She is leading several advanced manufacturing efforts for clean energy systems, including digital design and additive manufacturing of heat exchangers and thermoelectrics for solar, nuclear and waste heat recovery applications. Dr. Guillen was appointed to a leadership role on INL’s Advanced Manufacturing Council where she provides direction for new equipment procurement and R&D activities. As part of her leadership role, she is engaged in catapulting advanced manufacturing capabilities in areas such as metal additive manufacturing, digital light processing, and ink-based printing. She serves in a leadership capacity on technical committees and organizes symposia for the American Society of Mechanical Engineers, American Nuclear Society and The Minerals, Metals, and Materials Society.