Residence Kharagpur, India Nationality Indian | Name Subhasish Dey Fields Hydraulics | |
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Institutions Indian Institute of Technology Kharagpur Alma mater University of North Bengal
Indian Institute of Technology Kharagpur Doctoral advisor Sujit K Bose and GLN Sastry Known for Contributions to Hydraulics Education University of North Bengal Books Fluvial Hydrodynamics: Hydrodynamic and Sediment Transport Phenomena | ||
Subhasish Dey (Bengali: শুভাশীষ েদ; born 1958) is a hydraulician and educator. He is known for his research on the hydrodynamics throughout the world and acclaimed for his contributions in developing theories and solution methodologies of various problems on hydrodynamics, turbulence, boundary layer, sediment transport and open channel flow. Presently, he is engaged in research on turbulence characteristics over sediment beds and other turbulence related problems. He is currently a Professor of the Department of Civil Engineering, Indian Institute of Technology Kharagpur, where he served as the Head of the Department during 2013-15 and held the position of Brahmaputra Chair Professor during 2009-14 and 2015. He also holds an Adjunct Professor position in the Physics and Applied Mathematics Unit at Indian Statistical Institute Kolkata. Besides he has been named a Distinguished Visiting Professor at the Tsinghua University in Beijing, China.
Contents
Dey is an associate editor of Journal of Hydraulic Engineering, Journal of Hydraulic Research, Sedimentology, Acta Geophysica, Journal of Hydro-Environment Research, International Journal of Sediment Research and Journal of Numerical Mathematics and Stochastics.
Brief biography
Dey was born to Bimalendu Dey (father) and Kana Dey (mother) in Jalpaiguri town, West Bengal, India in 1958. In 1987, he married Swastika Dey (née Talukdar); and they have a son, Sibasish, and a daughter, Sagarika.
Career
Dey received B.E. degree in civil engineering from the University of North Bengal in 1981, MTech degree in water resources engineering and PhD degree in hydraulic engineering from the Indian Institute of Technology Kharagpur in 1984 and 1992, respectively.
He started his professional career as a faculty of the National Institute of Technology, Durgapur, where he taught fluid mechanics and hydraulics from 1984 to 1998. Then, he joined as a faculty of the Indian Institute of Technology Kharagpur in 1998.
Dey has offered courses on turbulent flow, sediment transport and scour in different universities of various countries, such as the University of Hong Kong, Università di Pisa, University of Calabria, Politecnico di Milano, University of Florence, University of Oulu, Instituto Superior Técnico, National Chung Hsing University etc.
Honors
Dey has become a fellow of the Indian Academy of Sciences (FASc), National Academy of Sciences, India (FNASc) and Indian National Academy of Engineering (FNAE). He served as a Council Member of the World Association for Sedimentation and Erosion Research (WASER), Beijing during 2011–2013. He currently serves as a Council Member of the International Association for Hydro-Environment Engineering and Research (IAHR). He is also a Member of the IAHR Fluvial Hydraulics Committee.
Contributions
Dey authored a book entitled Fluvial Hydrodynamics: Hydrodynamic and Sediment Transport Phenomena (Springer, 2014).
He has developed various theories of hydrodynamics. He discovered the origin of the scaling laws of sediment transport and the onset of a straight river to meander. In turbulence, he developed universal probability density function for turbulent velocity fluctuations, Reynolds stress and conditional Reynolds shear stresses in wall-shear flows. In fluvial hydraulics, he has contributed fundamental theories of sediment thresholds (also known as initiation of motion), discovered existence of negative hydrodynamic lift and non-universality of von Kármán constant. He has made pioneering contributions to the mechanism of scour at hydraulic structures. Besides, he has developed theories of secondary boundary layer in curved pipes, wall jets, seeping bed flows and turbulent bursting etc.