Publications:    

• Faraday waves on a liquid cylinder: role of hydrodynamic modes, Ratul Dasgupta, 2025 (in preparation)

• Jet formation from a multi-layered cavity, Ilies Haouche and Ratul Dasgupta (In preparation), 2025

• Parasitic capillary waves - an initial-value problem approach, Nikhil Yewale, Vinod Kadari and Ratul Dasgupta (In preparation), 2025

• Capillary ripples on a distorted bubble, Lohit Kayal, Yashika Dhote, Vatsal Sanjay and Ratul Dasgupta (in preparation), 2025.

• A computational toolbox for finite amplitude Stokes waves and their linear stability, Nikhil Yewale, Vinod Kadari & Ratul Dasgupta, 2025 (In preparation)

• Waves due to a translating, surface pressure disturbance: the initial value problem, Vinod Kadari, Nikhil Yewale, Y. S. Mayya and Ratul Dasgupta, 2025 (In preparation)

• Waves in a shear flow: transition between the KH, Holmboe and Miles instability, Anil Kumar, S. Ravichandran & Ratul Dasgupta (Under review), 2025. 

• Free oscillations of a standing, surface wave and its mechanical analogue, Nikhil Yewale, Sakir Amiroudine and Ratul Dasgupta (Under review), 2025.

• Encapsulating freezing point depressants in elastomeric coatings: Effective and durable anti-icing and de-icing coatings, Harish Sivakumaran, Ratul Dasgupta and Guruswamy Kumaraswamy, Royal Soc. Chem. Applied Interfaces, 2025  (Link)

• Focusing of concentric surface waves, Lohit Kayal, Vatsal Sanjay, Nikhil Yewale, Anil Kumar and Ratul Dasgupta, J. Fluid Mech., vol. 1003, A 14, 2024 (Link)

• Wave breaking - spilling and plunging, Vinod Kadari, Yashika Dhote, Anil Kumar, Nikhil Yewale and Ratul Dasgupta, The Eur. Phys. J. Special Topics (IMA11 Interfacial Fluid Dynamics) 2024 Link  

• Standing waves and jets on a sessile, incompressible bubble, Yashika J. Dhote, Anil Kumar, Lohit Kayal, Partha S. Goswami and Ratul Dasgupta, Phys. Fluids, 2023 Link 

• Surface and internal waves on a viscous, liquid layer: initial-value problem, Ramana B. L. V. Patibandla, Saswata Basak, Ratul Dasgupta and Anubhab Roy, Int. J. Multiphase Flow, 2023  Link 

• Jet from a very large, axisymmetric, surface gravity wave, Lohit Kayal and Ratul Dasgupta, J. Fluid Mech., vol. 975, A22, 1-35, 2023, Link 

• Dimples, jets and self-similarity in nonlinear capillary waves, Lohit Kayal and Saswata Basak and Ratul Dasgupta, J. Fluid Mech., vol. 951, A26, 1-18, 2022 Link 

• Dynamic stabilisation of Rayleigh-Plateau modes on a liquid cylinder, Sagar Patankar and Saswata Basak and  Ratul Dasgupta, J. Fluid Mech., vol. 946, A2 1-35, 2022 Link 

• Cavity formation in deformed amorphous solids on the nanoscale, K. Paul and R. Dasgupta and Jurgen Horbach and S. Karmakar, Phys. Rev. Res., 2, 042012 (R), 2020 Link

• Jetting in finite-amplitude, free, capillary-gravity waves, S. Basak and P. K. Farsoiya and R. Dasgupta, J. Fluid Mech., vol. 909, 2020 Link

• Proceedings of the 16th Asian Congress of Fluid Mechanics (ACFM) held at JNCASR Bengaluru, Dec. 2019 (Eds. Committee - L. Venkatakrishnan, Sekhar Majumdar, Ganesh Subramaniam, G S Bhat, Ratul Dasgupta and Jaywant Arakeri), Lecture Notes in Mechanical Engineering, Springer 2020 Link

• Azimuthal capillary waves on a hollow filament - discrete and the continuous spectrum,  Palas Kumar Farsoiya and Anubhab Roy and Ratul Dasgupta, 2020, J. Fluid Mech.,  Vol. 883 Link

• Test cases for comparison of two interfacial solvers, Manpreet Singh, Palas Kumar Farsoiya and Ratul Dasgupta, International J. Multiphase Flow, Vol. 115, 2019, pp. 75-92 Link

• Faraday waves on a cylindrical fluid filament - generalised equation and simulations, Sagar Patankar and Palas Kumar Farsoiya and Ratul Dasgupta, J. Fluid Mech., vol. 857, pp. 80-110, Dec. 2018 Link

• Axisymmetric viscous interfacial oscillations - theory and simulations,  Palas Kumar Farsoiya, Y. S. Mayya and Ratul Dasgupta, J. Fluid Mech. , 2017, vol. 826, pp. 797–818. Supplementary Material, Data Sheet Link

• Viscous undular hydraulic jumps of moderate Reynolds number flows, Ratul Dasgupta and Gaurav Tomar, Procedia IUTAM, vol. 15, pp. 300-304, 2015. Link

• The effect of initial momentum-flux on the circular hydraulic jump, Vishwanath K. P, Ratul Dasgupta, Rama Govindarajan and K. R. Sreenivas, ASME J. Fluids Engg., 137(6), 061301, 2015. Link 

• Numerical simulation of laminar, standing hydraulic jumps in a planar geometry, Ratul Dasgupta, Gaurav Tomar and Rama Govindarajan, Eur. Phys. J. E , 2015, 38 (5). Link

Before IITB

• Atomistic simulations of magnetic amorphous solids: Magnetostriction, Barkhausen noise and novel singularities, Ratul Dasgupta, H. George E. Hentschel, Itamar Procaccia and Bhaskar Sen Gupta, EPL (Europhysics Letters) 104 (4), 47003, 2013 Link

• Shear localization in three-dimensional amorphous solids, Ratul Dasgupta, Oleg Gendelman, Pankaj Mishra, Itamar Procaccia and Carmel A. B. Z. Shor, Phys. Rev. E, 88, 032401, 2013 Link

• Micro-alloying and the toughness of glasses: Modeling with pinned particles, Ratul Dasgupta, Pankaj Mishra, Itamar Procaccia and Konrad Samwer, Appl. Phys. Lett. 102, 191904, 2013 Link 

• Yield strain in shear banding amorphous solids, Ratul Dasgupta, H. George E. Hentschel and Itamar Procaccia, Physical Review E, 87 (2), 022810, 2013 Link 

• Derivation of the Johnson-Samwer T 2/3 temperature dependence of the yield strain in metallic glasses, Ratul Dasgupta, Ashwin Joy, H. G. E. Hentschel and Itamar Procaccia, Phys. Rev. B 87, 020101 (R), 2013 Link

• Microscopic Mechanism of Shear Bands in Amorphous Solids, Ratul Dasgupta, H. George E. Hentschel, and Itamar Procaccia, Phys. Rev. Lett. 109, 255502, 2012 Link

• Universality of the Plastic Instability in Strained Amorphous Solids, Ratul Dasgupta, Smarajit Karmakar and Itamar Procaccia, Phys. Rev. Lett., 108, 075701, 2012 Link

• Exact solution for the energy spectrum of Kelvin-wave turbulence in superfluids, Laurent Boué, Ratul Dasgupta, Jason Laurie, Victor L’vov, Sergey Nazarenko, and Itamar Procaccia, Phys. Rev. B 84, 064516, 2011 Link

• The hydraulic jump and the shallow-water equations, Ratul Dasgupta and Rama Govindarajan, International Journal of Advances in Engineering Sciences and Applied Mathematics, Volume 3, Issue 1-4, pp 126-130, 2011 Link

• Nonsimilar solutions of the viscous shallow water equations governing weak hydraulic jumps, Ratul DasGupta and Rama Govindarajan, Phys. Fluids 22, 112108, 2010 Link

• Gravity-free hydraulic jumps and metal femto-litre cups, Manikandan Mathur, Ratul DasGupta, N. R. Selvi, Neena Susan John, G. U. Kulkarni, and Rama Govindarajan, Phys. Rev. Lett. 98, 164502, 2007 Link

Conference Presentations / Publications:

• A non-local equation governing perturbations on a liquid cylinder, Sagar Patankar, Saswata Basak and Ratul Dasgupta, 14th European Fluid Mechanics Conference, Athens, Greece, 2022 (oral presentation by Ratul Dasgupta).

• Small and large amplitude, free oscillations of a pinned spherical interface, Yashika Dhote, Partha Sarathi Goswami and Ratul Dasgupta, European nonlinear oscillations conference (ENOC), Lyon, July, 2022, (oral presentation by Yashika Dhote).

• Stabilisation of Rayleigh-Plateau modes on a liquid cylinder, Sagar Patankar, Saswata Basak and Ratul Dasgupta, European nonlinear oscillations conference (ENOC), Lyon, July, 2022, (oral presentation by Sagar Patankar)

• Axisymmetric, nonlinear capillary waves: dimple and jet formation, Lohit Kayal, Saswata Basak, Ratul Dasgupta, European nonlinear oscillations conference (ENOC), Lyon, July, 2022, (oral presentation by Lohit Kayal)

• Jets and drops from capillary-gravity waves in immiscible, density stratified flows, Ratul Dasgupta, Saswata Basak and Palas Kumar Farsoiya, IUTAM Symposium on Particles, Drops and Bubbles in Stratified Environments, Toulouse, France, July, 2022 (oral presentation)

• Weakly nonlinear evolution of a cavity on a free surface, S. Basak and R. Dasgupta, oral presentation by Saswata Basak at APS-DFD Chicago 2020 (Online)

• Jetting in large amplitude axisymmetric capillary gravity wave, Oral presentation at APS - DFD Meeting at Seattle, U.S.A, November 2019.

• Fragmenting a viscous cylindrical fluid filament using the Faraday instability, Oral presentation at APS - DFD Meeting at Seattle, U.S.A, November 2019 by Saswata Basak 

• V0021: Jetting in axisymmetric capillary-gravity waves, Saswata Basak, Palas Kumar Farsoiya and Ratul Dasgupta, Gallery of Fluid Motion, APS-DFD, Seattle,  USA, November 2019 Video Link

• V0019: Jets formed from flow through a non-circular orifice, Palas Kumar Farsoiya, Sagar Patankar, Anubhab Roy and Ratul Dasgupta, Gallery of Fluid Motion, APS-DFD, Seattle,  USA, November 2019 Video Link

• Jetting in axisymmetric surface-gravity waves, Saswata Basak and Ratul Dasgupta (accepted for oral presenation), IUTAM Symposium on Computational modelling of instabilities and turbulence in separated two-phase flows, Dublin, Ireland, June, 2019 (Did not attend)

• A generalised Mathieu equation for inviscid, free and parametrically forced oscillations, CompFlu, 2018, IIT Roorkee

• Instability of a radially pulsated, axisymmetric axisymmetric gaseous filament, Sagar Patankar and Palas Kumar Farsoiya and Aishwarya S. Nayar and Ratul Dasgupta, IIT Bombay, 7th International and 45th National Conference on Fluid Mechanics and Fluid Power, IIT Bombay, December, 2018 (Paper presented by S. Patankar).

• Axisymmetric Faraday waves on a cylindrical fluid filament, Palas Kumar Farsoiya and Ratul Dasgupta, Vienna, Austria, 12th European Fluid Mechanics Conference, Vienna, Austria, September, 2018

• The discrete and continuous spectrum for linearized, viscous capillary-gravity waves, Ratul Dasgupta, Turbulence  - from angstroms to lightyears, January, 2018 Video Link

• Planar oscillations of a cylindrical fluid filament, Ratul Dasgupta and Palas Kumar Farsoiya, Dec. 18th-20th 2017, CompFlu IIT Madras.

• V0040: Viscous interfacial waves - oscillations, jetting and breakup, Palas Kumar Farsoiya and Ratul Dasgupta, Gallery of Fluid Motion, APS-DFD, Denver,  USA, November 2017 Video Link

• Planar free oscillations of a cylindrical fluid filament, Ratul Dasgupta and Palas Kumar Farsoiya, APS-DFD, Denver,  USA, November 2017.

• Axisymmetric capillary-gravity waves at the interface of two immiscible fluids - initial value problem, Palas Kumar Farsoiya and Ratul Dasgupta, APS-DFD, Denver,  USA, November 2017.

• Modelling oscillations at liquid surfaces for aerosol generation, Ratul Dasgupta, Palas Farsoiya & Y. S. Mayya, IITB-Washington Univ. St. Louis, Aerosol Workshop, June 8th-9th 2017.

• Axisymmetric standing waves between two fluids, Ratul Dasgupta and Palas Kumar Farsoiya, Compflu, Hyderabad,  December 2016.

• Cylindrical Waves at the interface of viscous immiscible fluids, Ratul Dasgupta and Palas Kumar Farsoiya, APS-DFD, Portland Oregon, USA,  November 2016.

• Viscous standing capillary waves - Linear and Nonlinear regime, Palas Kumar Farsoiya and Ratul Dasgupta, Fluid Mechanics & Fluid Power (FMFP), Allahabad (India),  December 2016.

• Viscous undular hydraulic jumps of moderate Reynolds number flows, Ratul Dasgupta and Gaurav Tomar, IUTAM Symposium on Multiphase Flows with Phase Change Challenges and Opportunities, Hyderabad (India), (2014). 

Before IITB

• Derivation of the Johnson-Samwer T^{2/3} law in metallic glasses, Ratul Dasgupta, Ashwin Joy, H. George E. Hentschel and Itamar Procaccia, Nonlinear response in complex matter, Erlangen, Germany, (2013)

• Shear banding instabilities in amorphous solids: Predicting the yield strain, Ratul Dasgupta, H. George E. Hentschel, Ashwin Joy and Itamar Procaccia, Proc. of the 4th International Symposium onslow dynamics in complex systems: Keep Going Tohoku, Sendai, Japan, Vol. 1518, pp. 162 (2012) (Paper presented by I. Procaccia)

• Can the inlet momentum flux change the radius of the circular hydraulic jump? , Vishwanath K. P., Ratul Dasgupta, Rama Govindarajan and K. R. Sreenivas, Inter-national Conference on Fluid Dynamics and its Applications, B. N. M. Institute of Technology, Bangalore, India, 1, 186-197, 2011 (Paper presented by Vishwanath K. P.)

• Laminar, circular hydraulic jumps without separation - Ratul Dasgupta, Gaurav Tomar and Rama Govindarajan - 62nd annual meeting of the APS, Division of Fluid Dynamics, Minneapolis, Minnesota, USA, Nov.  (2009)

• Study of a lid-driven cavity in an axisymmetric geometry, Ratul Dasgupta and Rama Govindarajan, IUTAM Symposium on unsteady separated flows and their control, Corfu, Greece, June (2007)

• Gravity-free hydraulic jumps supported by surface-tension - Ratul Dasgupta and Rama Govindarajan, Workshop on complex motion in fluids, Krogerup, Denmark (2007)