{"id":22,"date":"2023-11-03T19:33:53","date_gmt":"2023-11-03T19:33:53","guid":{"rendered":"https:\/\/www-cxcp1.tifrh.res.in\/~perlekar\/?page_id=22"},"modified":"2026-04-01T04:17:03","modified_gmt":"2026-04-01T04:17:03","slug":"publications","status":"publish","type":"page","link":"https:\/\/www.tifrh.res.in\/~perlekar\/?page_id=22","title":{"rendered":"Publications"},"content":{"rendered":"

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  1. \n

    \u201cScale-by-scale energy transfers in bubbly flows\u201d<\/b><\/i>, Hridey Narula, Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar, Journal of Fluid Mechanics, 1032, A12\u00a0(2026). <\/a><\/p>\n<\/li>\n

  2. \n

    \u201cInstabilities and turbulence in extensile swimmer suspensions\u201d<\/b><\/i>, Purnima Jain, Navdeep Rana, Roberto Benzi, and Prasad Perlekar, Physical Review Fluids, 10, 114602\u00a0(2025). <\/a><\/p>\n<\/li>\n

  3. \n

    \u201cEmergent asymmetry in confined bioconvection\u201d<\/b><\/i>, Martin A. Bees, and Prasad Perlekar, Journal of Fluid Mechanics, 1003, A21 (2025). <\/a><\/p>\n<\/li>\n

  4. \n

    \u201cInertia drives concentration-wave turbulence in swimmer suspensions\u201d<\/b><\/i>, Purnima Jain, Navdeep Rana, Sriram Ramaswamy, and Prasad Perlekar, Physical Review Letters, 133, 158302 \u00a0(2024). <\/a><\/p>\n<\/li>\n

  5. \n

    \u201cIntermittency in the not-so-smooth elastic turbulence\u201d<\/b><\/i>, Rahul K Singh, Prasad Perlekar, Dhrubaditya Mitra, and Marco Rosti, Nature Communications, 15, 4070 \u00a0(2024). <\/a><\/p>\n<\/li>\n

  6. \n

    \u201cDefect turbulence in a dense suspension of polar, active swimmers\u201d<\/b><\/i>, Navdeep Rana, Rayan Chatterjee, Sunghan Ro, Dov Levine, Sriram Ramaswamy, and Prasad Perlekar, Physical Review E, 109, 024603 \u00a0(2024). <\/a><\/p>\n<\/li>\n

  7. \n

    \u201cKolmogorov turbulence co-exists with pseudo-turbulence in buoyancy-driven bubbly flows\u201d<\/b><\/i>, Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar, Physical Review Letters, 131, 114002 \u00a0(2023). <\/a><\/p>\n<\/li>\n

  8. \n

    \u201cEnergy spectra of buoyancy-driven bubbly flow in a vertical Hele-Shaw cell\u201d<\/b><\/i>, Rashmi Ramadugu, Vikash Pandey, and Prasad Perlekar, Frontiers in Physics-Fluid Dynamics, 11, 1 (2023). <\/a><\/p>\n<\/li>\n

  9. \n

    \u201cLarge is different: non-monotonic behaviour of elastic range scaling in polymeric turbulence at large Reynolds and Deborah numbers\u201d<\/b><\/i>, Marco Rosti, Prasad Perlekar, and Dhrubaditya Mitra, Science Advances, 9, 1 (2023). <\/a><\/p>\n<\/li>\n

  10. \n

    \u201cEphemeral antibubbles: Spatiotemporal evolution from direct numerical simulations\u201d<\/b><\/i>, Nairita Pal, Rashmi Ramadugu, Prasad Perlekar, and Rahul Pandit, Phys. Rev. Research, 4, 043128 (2022).<\/a><\/p>\n<\/li>\n

  11. \n

    \u201cEffect of temperature on the growth characteristics of motile and non-motile Escherichia coli MG1655 colonies on hard agar\u201d<\/b><\/i>, Akshi Gupta, Navdeep Rana, B. Jacob, Samrat, N. Mehendale, Debjani Paul, and Prasad Perlekar, Indian J. Phys. (2022).<\/a><\/p>\n<\/li>\n

  12. \n

    \u201cPhase ordering, topological defects, and turbulence in the three-dimensional incompressible Toner-Tu equation\u201d<\/b><\/i>, Navdeep Rana, and Prasad Perlekar, Phys. Rev. E, 105, L032603 (2022).<\/a><\/p>\n<\/li>\n

  13. \n

    \u201cSurface tension as the destabiliser of a vortical interface\u201d<\/b><\/i>, Rashmi Ramadugu, Prasad Perlekar, and Rama Govindarajan, J. Fluid Mech., 936, A45 (2022).<\/a><\/p>\n<\/li>\n

  14. \n

    \u201cTurbulence modulation in buoyancy-driven bubbly flows\u201d<\/b><\/i>, Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar, J. Fluid Mech., 932, A19 (2022).<\/a><\/p>\n<\/li>\n

  15. \n

    \u201cRate of formation of caustics in heavy particles advected by turbulence\u201d<\/b><\/i>, Akshay Bhatnagar, Vikash Pandey, Prasad Perlekar, and Dhrubaditya Mitra, Phil. Trans. R. Soc. A, 380, 20210086, (2022).[Thematic issue: \u2018Scaling to turbulence edifice\u2019] <\/a><\/p>\n<\/li>\n

  16. \n

    \u201cPattern stabilisation in swarms of programmable active matter: a probe for turbulence at large length scales\u201d<\/b><\/i>, Pankaj Popli, Prasad Perlekar, and Surajit Sengupta, Phys. Rev. E (Letters), 104, L032601 (2021).<\/a><\/p>\n<\/li>\n

  17. \n

    \u201cInertia Drives a Flocking Phase Transition in Viscous Active Fluids\u201d<\/b><\/i>, Rayan Chatterjee, Navdeep Rana, R. Aditi Simha, Prasad Perlekar, and Sriram Ramaswamy, Phys. Rev. X, 11, 031063 (2021).<\/a><\/p>\n<\/li>\n

  18. \n

    \u201cPaths to caustic formation in turbulent aerosols\u201d<\/b><\/i>, Jan Meibohm, Vikash Pandey, Akshay Bhatnagar, Kristian Gustavsson, Dhrubaditya Mitra, Prasad Perlekar, and Bernhard Mehlig, Phys. Rev. Fluids (Letters), 6, L062302 (2021).<\/a><\/p>\n<\/li>\n

  19. \n

    \u201cPseudo-turbulence in two-dimensional buoyancy-driven bubbly flows: A DNS study\u201d<\/b><\/i>, Rashmi Ramadugu, Vikash Pandey, and Prasad Perlekar, Eur. Phys. J. E, 43, 73 (2020).<\/a> [EPJE Highlight<\/a>]<\/p>\n<\/li>\n

  20. \n

    \u201cCoarsening in the two-dimensional incompressible Toner-Tu equation: Signatures of turbulence\u201d<\/b><\/i>, Navdeep Rana, and Prasad Perlekar, Phys. Rev. E, 102, 032617 (2020).<\/a><\/p>\n<\/li>\n

  21. \n

    \u201cFixation in competing populations: Diffusion and strategies for survival\u201d<\/b><\/i>, Tapas Singha, Prasad Perlekar, and Mustansir Barma, Phys. Rev. Research, 2, 023412 (2020).<\/a><\/p>\n<\/li>\n

  22. \n

    \u201cLiquid velocity fluctuations and energy spectra in three-dimensional buoyancy-driven bubbly flows\u201d<\/b><\/i>, Vikash Pandey, Rashmi Ramadugu, and Prasad Perlekar, J. Fluid Mech. (Rapids), 884, R6 (2020).<\/a><\/p>\n<\/li>\n

  23. \n

    \u201cClustering and energy spectra in two-dimensional dusty gas turbulence\u201d<\/b><\/i>, Vikash Pandey, Prasad Perlekar, and Dhrubaditya Mitra, Phys. Rev. E, 100, 013114 (2019) [Editor\u2019s suggestion].<\/a><\/p>\n<\/li>\n

  24. \n

    \u201cKinetic energy spectra and flux in turbulent phase-separating symmetric binary-fluid mixtures\u201d<\/b><\/i>, Prasad Perlekar, J. Fluid Mech., 873, 459 (2019).<\/a><\/p>\n<\/li>\n

  25. \n

    \u201cTopology of two-dimensional flow of dust and gas\u201d<\/b><\/i>, Dhrubaditya Mitra and Prasad Perlekar, Phys. Rev. Fluids, 3, 044303 (2018).<\/a><\/p>\n<\/li>\n

  26. \n

    \u201cSpreading of nonmotile bacteria on a hard agar plate: Comparison between agent-based and stochastic simulations\u201d<\/b><\/i>, Navdeep Rana, Pushpita Ghosh, and Prasad Perlekar, Phys. Rev. E, 96, 052403 (2017).<\/a><\/p>\n<\/li>\n

  27. \n

    \u201cAn overview of the statistical properties of two-dimensional turbulence in fluids with particles, conducting fluids, fluids with polymer additives, binary-fluid mixtures, and superfluids\u201d<\/b><\/i>, Rahul Pandit, Debarghya Banerjee, Akshay Bhatnagar, Marc Brachet, Anupam Gupta, Dhrubaditya Mitra, Nairita Pal, Prasad Perlekar, Samriddhi Sankar Ray, Vishwanath Shukla, Dario Vincenzi, Phys. Fluids, 29, 111112 (2017).<\/a><\/p>\n<\/li>\n

  28. \n

    \u201cNumerical analysis of the lattice Boltzmann method for simulation of linear acoustic waves\u201d<\/b><\/i>, Dattaraj B. Dhuri, Shravan M. Hanasoge, Prasad Perlekar, and Johan O.A. Robertsson, Phys. Rev. E, 95, 044306 (2017).<\/a><\/p>\n<\/li>\n

  29. \n

    \u201cTwo-dimensional turbulence in symmetric binary-fluid mixtures: Coarsening arrest by the inverse cascade\u201d<\/b><\/i>, Prasad Perlekar, Nairita Pal, and Rahul Pandit, Scientific Reports, 7, 44589 (2017).<\/a><\/p>\n<\/li>\n

  30. \n

    \u201cDeviation-angle and trajectory statistics for inertial particles in turbulence<\/b><\/i>\u201d, Akshay Bhatnagar, Anupam Gupta, Dhrubaditya Mitra, Prasad Perlekar, Michael Wilkinson, and Rahul Pandit, Phys. Rev. E, 94, 063112 (2016).<\/a><\/p>\n<\/li>\n

  31. \n

    \u201cCoherent structures and extreme events in rotating multiphase turbulent flows<\/b><\/i>\u201d, Luca Biferale, Fabio Bonaccorso, Irene M. Mazzitelli, Michel A.T. van Hinsberg, Alessandra S. Lanotte, Stefano Musacchio, Prasad Perlekar, and Federico Toschi, Phys. Rev. X, 6, 041036 (2016).<\/a><\/p>\n<\/li>\n

  32. \n

    \u201cHow long do particles spend in vortical regions in turbulent flows?<\/b><\/i>\u201d, Akshay Bhatnagar, Anupam Gupta, Dhrubaditya Mitra, Rahul Pandit, and Prasad Perlekar, Phys. Rev. E, 94, 053119 (2016).<\/a><\/p>\n<\/li>\n

  33. \n

    \u201cFront structure and dynamics in dense colonies of motile bacteria: Role of active turbulence<\/b><\/i>\u201d, Rayan Chatterjee, Abhijeet A. Joshi, and Prasad Perlekar, Phys. Rev. E, 94, 013105 (2016).<\/a><\/p>\n<\/li>\n

  34. \n

    \u201cDynamics of circular arrangement of vorticity in two dimensions<\/b><\/i>\u201d, Rohith V. Swaminathan, S. Ravichandran, Prasad Perlekar, and Rama Govindarajan, Phys. Rev. E, 94, 013105 (2016).<\/a><\/p>\n<\/li>\n

  35. \n

    \u201cBinary-fluid turbulence: Signatures of multifractal droplet dynamics and dissipation reduction<\/b><\/i>\u201d, Nairita Pal, Prasad Perlekar, Anupam Gupta, and Rahul Pandit, Phys. Rev. E, 93, 063115 (2016).<\/a><\/p>\n<\/li>\n

  36. \n

    \u201cInertial particle acceleration in strained turbulence<\/b><\/i>\u201d, Chung Min Lee, Armann Glyfason, Prasad Perlekar, and Federico Toschi, J. Fluid Mech., 785, 31 (2015).<\/a><\/p>\n<\/li>\n

  37. \n

    \u201cImpact of the Peterlin approximation on polymer dynamics in turbulent flows<\/b><\/i>\u201d, Dario Vincenzi, Prasad Perlekar, Luca Biferale, and Federico Toschi, Phys. Rev. E, 92, 053004 (2015).<\/a><\/p>\n<\/li>\n

  38. \n

    \u201cClustering of vertically contrained passive particles in homogeneous, isotropic turbulence<\/b><\/i>\u201d, Massimo De Pietro, Michel A.T. van Hinsberg, Luca Biferale, Herman J.H. Clercx, Prasad Perlekar, Federico Toschi, Phys. Rev. E, 91, 053002 (2015).<\/a><\/p>\n<\/li>\n

  39. \n

    \u201cTwo-dimensional, homogeneous, isotropic fluid turbulence with polymer additives<\/b><\/i>\u201d, Anupam Gupta, Prasad Perlekar, and Rahul Pandit, Phys. Rev. E, 91,033013 (2015).<\/a><\/p>\n<\/li>\n

  40. \n

    \u201cInternal dynamics and activated processes in soft-glassy materials<\/b><\/i>\u201d, Roberto Benzi, Mauro Sbragaglia, Andrea Scagliarini, Prasasd Perlekar, Massimo Bernaschi, Sauro Succi, and Federico Toschi, Soft Matter, 11, 1271 (2015).<\/a><\/p>\n<\/li>\n

  41. \n

    \u201cDirect evidence of plastic events and dynamic heterogeneities in soft-glasses<\/b><\/i>\u201d, Roberto Benzi, Mauro Sbragaglia, Prasad Perlekar, Massimo Bernaschi, Sauro Succi, and Federico Toschi, Soft Matter, 10, 4615 (2014).<\/a><\/p>\n<\/li>\n

  42. \n

    \u201cAttracting fixed points for heavy particles in the vicinity of a vortex pair<\/b><\/i>\u201d, S. Ravichandran, Prasad Perlekar, Rama Govindarajan, Phys. Fluids, 26, 013303 (2014).<\/a><\/p>\n<\/li>\n

  43. \n

    \u201cSpinodal decomposition in homogeneous and isotropic turbulence<\/b><\/i>\u201d, Prasad Perlekar, Roberto Benzi, Herman J.H. Clercx, David R. Nelson, and Federico Toschi, Phys. Rev. Lett., 112, 014502 (2014).<\/a><\/p>\n<\/li>\n

  44. \n

    \u201cAxisymmetric multiphase Lattice Boltzmann<\/b><\/i>\u201d, Sudhir Srivastava, Prasad Perlekar, Nishith Verma, and Federico Toschi, Phys. Rev. E, 88, 013309 (2013).<\/a><\/p>\n<\/li>\n

  45. \n

    \u201cCumulative compressibility effects on population dynamics in turbulent flows<\/b><\/i>\u201d, Prasad Perlekar, Roberto Benzi, David R. Nelson, and Federico Toschi, Journal of Turbulence, 14, 161 (2013).<\/a><\/p>\n<\/li>\n

  46. \n

    \u201cGrowth, competition and cooperation in spatial population genetics<\/b><\/i>\u201d, Simone Pigolotti, Roberto Benzi, Prasad Perlekar, Mogens H. Jensen, Federico Toschi, and David R. Nelson, Theoretical Population Biology, 84, 72 (2013).<\/a><\/p>\n<\/li>\n

  47. \n

    \u201cUnified framework for a side-by-side comparison of different multicomponent algorithms: lattice Boltzmann vs. phase field model<\/b><\/i>\u201d, Luca Scarbolo, Dafne Molin, Prasad Perlekar, Mauro Sbragaglia, Alfredo Soldati, and Federico Toschi, J. Comp. Phys., 234, 263 (2013).<\/a><\/p>\n<\/li>\n

  48. \n

    \u201cStatistics of polymer extensions in turbulent channel flow<\/b><\/i>\u201d, Faranggis Bagheri, Dhrubaditya Mitra, Prasad Perlekar, and Luca Brandt, Phys. Rev. E, 86, 056314 (2012).<\/a><\/p>\n<\/li>\n

  49. \n

    \u201cDroplet size distribution in homogeneous, isotropic turbulence<\/b><\/i>\u201d, Prasad Perlekar, Luca Biferale, Mauro Sbragaglia, and Federico Toschi, Phys. Fluids, 24, 065101 (2012).<\/a><\/p>\n<\/li>\n

  50. \n

    \u201cConvection in mutiphase flows using Lattice Boltzmann methods<\/b><\/i>\u201d, Luca Biferale, Prasad Perlekar, Mauro Sbragaglia, and Federico Toschi, Phys. Rev. Lett., 108, 104502 (2012).<\/a><\/p>\n<\/li>\n

  51. \n

    \u201cDynamical Multiscaling in Two-dimensional Fluid Turbulence<\/b><\/i>\u201d, Samriddhi Sankar Ray, Dhrubaditya Mitra, Prasad Perlekar, and Rahul Pandit, Phys. Rev. Lett., 107, 184503 (2011).<\/a><\/p>\n<\/li>\n

  52. \n

    \u201cThe persistence problem in two-dimensional fluid turbulence<\/b><\/i>\u201d, Prasad Perlekar, Samriddhi Sankar Ray, Dhrubaditya Mitra, and Rahul Pandit, Phys. Rev. Lett., 106, 054501 (2011).<\/a><\/p>\n<\/li>\n

  53. \n

    \u201cSystematics of the magnetic-Prandtl-number dependence of homogeneous<\/b><\/i>\u201d, isotropic, magnetodyrodynamic turbulence, Ganapati Sahoo, Prasad Perlekar,
    and Rahul Pandit,     New J. Phys., 13, 013036 (2011).<\/a><\/p>\n<\/li>\n

  54. \n

    \u201cDirect numerical simulations of statistically steady homogeneous, isotropic fluid turbulence with polymer additives<\/b><\/i>\u201d, Prasad Perlekar, Dhrubaditya Mitra, and Rahul Pandit, Phys. Rev. E, 82, 066313 (2010).<\/a><\/p>\n<\/li>\n

  55. \n

    \u201cPopulation dynamics at high Reynolds number<\/b><\/i>\u201d, Prasad Perlekar, Roberto Benzi, David R. Nelson, and Federico Toschi, Phys. Rev. Lett., 105, 144501 (2010).<\/a><\/p>\n<\/li>\n

  56. \n

    \u201cTurbulence-induced melting of nonequilibrium vortex crystal in a forced thin fluid film<\/b><\/i>\u201d, Prasad Perlekar and Rahul Pandit, New J. Phys. 12, 023033 (2010).<\/a><\/p>\n<\/li>\n

  57. \n

    \u201cStatistical properties of turbulence: An overview<\/b><\/i>\u201d, Rahul Pandit, Prasad Perlekar, and Samriddhi Sankar Ray, Pramana, 73, 157 (2009).<\/a><\/p>\n<\/li>\n

  58. \n

    \u201cStatistically steady turbulence in thin films: direct numerical simulations with Ekman friction<\/b><\/i>\u201d, Prasad Perlekar and Rahul Pandit, New J. of Phys., 11, 073003 (2009).<\/a><\/p>\n<\/li>\n

  59. \n

    \u201cManifestations of Drag Reduction by Polymer Additives in Decaying, Homogeneous, Isotropic Turbulence<\/b><\/i>\u201d, Prasad Perlekar, Dhrubaditya Mitra, and Rahul\u00a0Pandit, Phys. Rev. Lett., 97, 264501 (2006).<\/a><\/p>\n<\/li>\n<\/ol>\n

    Peer reviewed conference proceedings<\/h4>\n
      \n
    1. \n

      \u201cSimulations of a boiling system using a Lattice Boltzmann method<\/b><\/i>\u201d, Luca Biferale, Prasad Perlekar, Mauro Sbragaglia, and Federico Toschi, Commun. Comput. Phys., 13 696 (2013).\u00a0<\/a><\/p>\n<\/li>\n

    2. \n

      \u201cA Study of Fluid Interfaces and Moving Contact Lines using the Lattice Boltzmann method<\/b><\/i>\u201d, Sudhir Srivastava, Prasad Perlekar, Luca Biferale, Mauro Sbragaglia, J. Ten Thije Boonkkamp, and Federico Toschi, Commun. Comput. Phys., 13 725 (2013).\u00a0<\/a><\/p>\n<\/li>\n

    3. \n

      \u201cPopulation dynamics in compressible flows<\/b><\/i>\u201d, Roberto Benzi, Mogens H. Jensen, David R. Nelson, Prasad Perlekar, Simone Pigolotti, and Federico Toschi, European Physical Journal: Special Topics, 204, 1 (2012).\u00a0<\/a><\/p>\n<\/li>\n

    4. \n

      \u201cParticle algorithms for population dynamics in flows<\/b><\/i>\u201d, Prasad Perlekar, Roberto Benzi, Simone Pigolotti, and Federico Toschi, J. Phys.: Conf. Ser., 333, 012013 (2011).<\/a><\/p>\n<\/li>\n

    5. \n

      \u201cA Lattice Boltzmann method for turbulent emulsions<\/b><\/i>\u201d, Luca Biferale, Prasad Perlekar, Mauro Sbragaglia, Sudhir Srivastava, and Federico Toschi, J. Phys.: Conf. Ser., 318, 052017 (2011).<\/a><\/p>\n<\/li>\n

    6. \n

      \u201cStatistics of population dynamics in turbulence<\/b><\/i>\u201d, Prasad Perlekar, Roberto Benzi, David R. Nelson, and Federico Toschi, submitted to J. Phys.: Conf. Ser., 318, 092025 (2011).<\/a><\/p>\n<\/li>\n

    7. \n

      \u201cDirect numerical simulation on strained turbulent flows and particles within<\/b><\/i>\u201d, Armann Gylfason, Chung-min Lee, Prasad Perlekar, and Federico Toschi, J. Phys.:Conf. Ser., 318, 052003 (2011).<\/a><\/p>\n<\/li>\n<\/ol>\n

      Book chapters<\/h4>\n
        \n
      1. \n

        \u201cStochastic competition between two populations in space<\/b><\/i>\u201d, Simoe Pigolotti, Roberto Benzi, Mogens H. Jensen, Prasad Perlekar, Federico Toschi, Collective Dynamics from Bacteria to Crowds, Eds. Adrean Muntean and Federico Toschi, Springer (2014).<\/p>\n<\/li>\n<\/ol>\n

        PhD Thesis<\/h4>\n