Biswas has contributed to the fields of heat transfer and fluid mechanics. His work on enhancing heat transfer using delta-winglet type vortex generators has been included in international textbooks.[4][5][6] The concept has been used by industry for various HAVC systems. Additionally, he has contributed to the understanding of bluff body flows.[7] His work on large-eddy simulation of flow past bluff bodies[8] and heat transfer in impinging jets[9] has been noted in the scientific community. Biswas's contributions pertaining to handling free surface flows[10] and some of his investigations related to the prediction of bubble growth in film boiling[11][12][13] have been recognized. Biswas and co-researchers analyzed the impact of falling drops on a liquid surface[14][15] and contributed to the understanding of partial coalescence and the transition between coalescence and splashing. Experimental evidence of large bubble entrapment occurring outside the traditional small region on the V-D map, made the boundary of large bubble entrapment a topic of interest. His group probed the zone of large bubble entrapment and underlying physics.[16] He has published on the formation of air bubbles from a submerged orifice.[17][18] His group analyzed the impact of a train of high-speed micro-drops on a deep liquid pool and explained a mechanistic route leading to the creation of a deep cavity inside the liquid pool.[19] Biswas and co-researchers contributed to understanding that EMT cells are more drug-resistant, with a two-fold higher expression of the multi-drug resistance (MDR1) gene.[20]
He was conferred an honorary doctorate by the Aristotle University of Thessaloniki, Greece, in 2018.[21]Prof. Gautam Biswas receiving the Honorary Doctorate awarded by the Aristotle University of Thessaloniki, Greece on November 2, 2018
IIT Kanpur awarded Biswas the Institute Fellow award for the year 2020.[22]
In recognition of his teaching, IIT Kanpur conferred the Distinguished Teacher Award upon Biswas in 2022.[23]
Biswas received the 2023 ASME Heat Transfer Memorial Award in the Science Category for contributions to thermal science and engineering, including heat transfer enhancement, phase change heat transfer with and without electrohydrodynamic forces, and the dynamics of liquid jet and droplet impingement.[24]Prof. Biswas receiving the ASME Heat Transfer Memorial Award in the Science Category on October 31, 2023 at the Convention Center, New Orleans, USA
^Biswas, G.; Mitra, N. K.; Fiebig, M. (1 January 1994). "Heat transfer enhancement in fin-tube heat exchangers by winglet type vortex generators". International Journal of Heat and Mass Transfer. 37 (2): 283–291. Bibcode:1994IJHMT..37..283B. doi:10.1016/0017-9310(94)90099-X.
^Biswas, G.; Torii, K.; Fujii, D.; Nishino, K. (1 November 1996). "Numerical and experimental determination of flow structure and heat transfer effects of longitudinal vortices in a channel flow". International Journal of Heat and Mass Transfer. 39 (16): 3441–3451. Bibcode:1996IJHMT..39.3441B. doi:10.1016/0017-9310(95)00398-3.
^Saha, A. K; Biswas, G; Muralidhar, K (1 February 2003). "Three-dimensional study of flow past a square cylinder at low Reynolds numbers". International Journal of Heat and Fluid Flow. 24 (1): 54–66. Bibcode:2003IJHFF..24...54S. doi:10.1016/S0142-727X(02)00208-4.
^Srinivas, Y.; Biswas, G.; Parihar, A. S.; Ranjan, R. (1 January 2006). "Large-Eddy Simulation of High Reynolds Number Turbulent Flow Past a Square Cylinder". Journal of Engineering Mechanics. 132 (3): 327–335. doi:10.1061/(ASCE)0733-9399(2006)132:3(327).
^Cziesla, T.; Biswas, G.; Chattopadhyay, H.; Mitra, N. K. (1 October 2001). "Large-eddy simulation of flow and heat transfer in an impinging slot jet". International Journal of Heat and Fluid Flow. 22 (5): 500–508. Bibcode:2001IJHFF..22..500C. doi:10.1016/S0142-727X(01)00105-9.
^Gerlach, D.; Tomar, G.; Biswas, G.; Durst, F. (1 February 2006). "Comparison of volume-of-fluid methods for surface tension-dominant two-phase flows". International Journal of Heat and Mass Transfer. 49 (3–4): 740–754. Bibcode:2006IJHMT..49..740G. doi:10.1016/j.ijheatmasstransfer.2005.07.045.
^Tomar, G.; Biswas, G.; Sharma, A.; Welch, S. W. J. (1 September 2008). "Multimode analysis of bubble growth in saturated film boiling". Physics of Fluids. 20 (9): 092101–092101–7. Bibcode:2008PhFl...20i2101T. doi:10.1063/1.2976764.
^Hens, Abhiram; Biswas, Gautam; De, Sudipta (1 January 2014). "Analysis of interfacial instability and multimode bubble formation in saturated boiling using coupled level set and volume-of-fluid approach". Physics of Fluids. 26 (1): 012105. Bibcode:2014PhFl...26a2105H. doi:10.1063/1.4861760.
^Journal: Physics of Fluids, Volume: 28, Pages: 052102-1- 052102-18, Year: 2016 Pandey, Vinod; Biswas, Gautam; Dalal, Amaresh (2016). "Effect of superheat and electric field on saturated film boiling". Physics of Fluids. 28 (5): 052102. Bibcode:2016PhFl...28e2102P. doi:10.1063/1.4948545. S2CID124898848.
^Journal: Journal of Fluid Mechanics, Volume: 655, Pages: 72-104, Year: 2010 Ray, B.; Biswas, G.; Sharma, A. (2010). "Generation of secondary droplets in coalescence of a drop at a liquid–liquid interface". Journal of Fluid Mechanics. 655: 72–104. Bibcode:2010JFM...655...72R. doi:10.1017/S0022112010000662. S2CID120239071.
^Journal: Journal of Fluid Mechanics, Volume: 768, Pages: 492-523, Year: 2015 Ray, Bahni; Biswas, Gautam; Sharma, Ashutosh (2015). "Regimes during liquid drop impact on a liquid pool". Journal of Fluid Mechanics. 768: 492–523. Bibcode:2015JFM...768..492R. doi:10.1017/jfm.2015.108. S2CID86847921.
^Journal - Physics of Fluids, Volume - 29, Pages 092101-1- 092101-13, Year - 2017 Deka, Hiranya; Ray, Bahni; Biswas, Gautam; Dalal, Amaresh; Tsai, Pei-Hsun; Wang, An-Bang (2017). "The regime of large bubble entrapment during a single drop impact on a liquid pool". Physics of Fluids. 29 (9): 092101. Bibcode:2017PhFl...29i2101D. doi:10.1063/1.4992124.
^Journal: Physics of Fluids, Volume: 21, Pages: 062103-1 – 062103-17, Year: 2009 Chakraborty, I.; Ray, B.; Biswas, G.; Durst, F.; Sharma, A.; Ghoshdastidar, P. S. (2009). "Computational investigation on bubble detachment from submerged orifice in quiescent liquid under normal and reduced gravity". Physics of Fluids. 21 (6): 062103–062103–17. Bibcode:2009PhFl...21f2103C. doi:10.1063/1.3152437.
^Chakraborty, Indrajit; Biswas, Gautam; Polepalle, Satyamurthy; Ghoshdastidar, Partha S. (2015). "Bubble formation and dynamics in a quiescent high-density liquid". AIChE Journal. 61 (11): 3996–4012. Bibcode:2015AIChE..61.3996C. doi:10.1002/aic.14896.
^Journal - Physics of Fluids, Volume - 30, Pages 042103-1 – 042103-14, Year - 2018 Deka, Hiranya; Ray, Bahni; Biswas, Gautam; Dalal, Amaresh (2018). "Dynamics of tongue shaped cavity generated during the impact of high-speed microdrops". Physics of Fluids. 30 (4): 042103. Bibcode:2018PhFl...30d2103D. doi:10.1063/1.5022374.