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Journal Publications:

  • Droplets in pulsatile flow, S. Patankar and R. Dasgupta, 2020, (To be submitted)
  • Azimuthal perturbations of a viscous liquid filament: Part 2 - normal mode analysis and the intial value problem,  Palas Kumar Farsoiya and Ratul Dasgupta, 2019, (In preparation)
  • Eulerian and Lagrangian descriptions in fluid mechanics , Ratul Dasgupta (In preparation) - 2019
  • Axisymmetric Rayleigh-Taylor instability,  Palas Kumar Farsoiya and Ratul Dasgupta, 2019, (In Preparation)
  • Viscous Faraday waves on a cylindrical drop - stabilisation and destabilisation, S. Patankar and S. Basak and P. K. Farsoiya and R. Dasgupta, 2020, (In preparation)
  • 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 
  • Jetting in finite-amplitude, free, capillary-gravity waves, S. Basak and P. K. Farsoiya and R. Dasgupta, J. Fluid Mech. 2020, (accepted, to appear)
  • 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.
  • 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
  • Test cases for comparison of two interfacial solvers , Manpreet Singh, Palas Kumar Farsoiya and Ratul Dasgupta, Int. J. Multiphase Flow, Vol. 115, 2019, pp. 75-92
  • 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
  • Axisymmetric viscous interfacial oscillations - theory and simulations,  Palas Kumar Farsoiya, Y. S. Mayya and Ratul Dasgupta, J. Fluid Mech. , Aug. 2017, vol. 826, pp. 797–818. Supplementary Material, Data Sheet
  • Viscous undular hydraulic jumps of moderate Reynolds number flows, Ratul Dasgupta and Gaurav Tomar, Procedia IUTAM, vol. 15, pp. 300-304, 2015.
  • 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)
  • 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).

  • 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)

  • 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)

  • 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)

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

  • 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)

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

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

  • 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)

  • 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)

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

  • 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)

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Conference Presentations / Publications:

Weakly nonlinear evolution of a cavity on a free surface, S. Basak and R. Dasgupta, submitted for oral presentation to APS-DFD Chicago 2020 (Online)

Weakly nonlinear evolution of a cavity on a free surface, S. Basak and R. Dasgupta, submitted for oral presentation to APS-DFD Chicago 2020 (Online)

  • 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, June 2020 (Accepted for oral presentation)
  • 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 (PhD student)
  • 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: https://gfm.aps.org/meetings/dfd-2019/5d764521199e4c429a9b2bd3
  • 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: https://gfm.aps.org/meetings/dfd-2019/5d75e42d199e4c429a9b2bc4
  • 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: https://www.youtube.com/watch?v=nqgHs9Vlhsg
  • 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: https://gfm.aps.org/meetings/dfd-2017/59b8df40b8ac316d38841c99
  • 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). 

  • 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)

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