Raj P. Chhabra has been a Professor of Chemical Engineering at the Indian Institutes of Technology in Kanpur and in Ropar during 1984 -2022. After receiving his B.S., M.S. and Ph D (all in Chemical Engineering) from the erstwhile University of Roorkee, the Indian Institute of Science, Bangalore and Monash University, Melbourne respectively. Currently, he is a distinguished Professor of Chemical Engineering at Shiv Nadar Institution of Eminence, Delhi NCR, India. His current teaching and research interests are in the general areas of non-Newtonian fluid mechanics, multiphase flows, and research methods and skills. He has 10 books, 35 invited book chapters and reviews, and over 400 technical papers in peer reviewed journals to his credit. He is an elected Fellow of the Indian National Academy of Engineering and of the Indian National Science Academy. Swati A Patel, after earning her doctorate in Chemical Engineering from the Indian Institute of Technology in Kanpur followed by a post-doctoral fellowship tenure at the New Jersey Institute of Technology, worked at the Indian Institute of Technology Ropar as an Assistant Professor of Chemical Engineering during the period 2017-2024. At present, she is an independent researcher and lives in Edmonton, Alberta, Canada. Her current research interests are in the broad areas of Computational Fluid Dynamics (CFD) of non-Newtonian multiphase flows and particulate product engineering. She has published numerous technical papers in this field. She has coauthored the third edition of Bubbles, Drops and Particles in non-Newtonian Fluids published in 2023.

• 1. Non-Newtonian fluid behaviour 2. Rheometry for non-Newtonian fluids​​​​​​​3. Flow in pipes and in conduits of non-circular cross-sections​​​​​​​4. Flow of multi-phase mixtures in pipes​​​​​​​5. Particulate systems​​​​​​​6. Heat transfer characteristics of non-Newtonian fluids in pipes7. Momentum, heat and mass transfer in boundary layers​​​​​​​8. Liquid mixing9. Rheology of multi-phase system