Publications

  1. “Defect turbulence in a dense suspension of polar, active swimmers”, Navdeep Rana, Rayan Chatterjee, Sunghan Ro, Dov Levine, Sriram Ramaswamy, and Prasad Perlekar, Physical Review E, 109, 024603  (2024).

  2. “Kolmogorov turbulence co-exists with pseudo-turbulence in buoyancy-driven bubbly flows”, Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar, Physical Review Letters, 131, 114002  (2023).

  3. “Energy spectra of buoyancy-driven bubbly flow in a vertical Hele-Shaw cell”, Rashmi Ramadugu, Vikash Pandey, and Prasad Perlekar, Frontiers in Physics-Fluid Dynamics, 11, 1 (2023).

  4. “Large is different: non-monotonic behaviour of elastic range scaling in polymeric turbulence at large Reynolds and Deborah numbers”, Marco Rosti, Prasad Perlekar, and Dhrubaditya Mitra, Science Advances, 9, 1 (2023).

  5. “Ephemeral antibubbles: Spatiotemporal evolution from direct numerical simulations”, Nairita Pal, Rashmi Ramadugu, Prasad Perlekar, and Rahul Pandit, Phys. Rev. Research, 4, 043128 (2022).

  6. “Effect of temperature on the growth characteristics of motile and non-motile Escherichia coli MG1655 colonies on hard agar”, Akshi Gupta, Navdeep Rana, B. Jacob, Samrat, N. Mehendale, Debjani Paul, and Prasad Perlekar, Indian J. Phys. (2022).

  7. “Phase ordering, topological defects, and turbulence in the three-dimensional incompressible Toner-Tu equation”, Navdeep Rana, and Prasad Perlekar, Phys. Rev. E, 105, L032603 (2022).

  8. “Surface tension as the destabiliser of a vortical interface”, Rashmi Ramadugu, Prasad Perlekar, and Rama Govindarajan, J. Fluid Mech., 936, A45 (2022).

  9. “Turbulence modulation in buoyancy-driven bubbly flows”, Vikash Pandey, Dhrubaditya Mitra, and Prasad Perlekar, J. Fluid Mech., 932, A19 (2022).

  10. “Rate of formation of caustics in heavy particles advected by turbulence”, Akshay Bhatnagar, Vikash Pandey, Prasad Perlekar, and Dhrubaditya Mitra, Phil. Trans. R. Soc. A, 380, 20210086, (2022).[Thematic issue: ‘Scaling to turbulence edifice’]

  11. “Pattern stabilisation in swarms of programmable active matter: a probe for turbulence at large length scales”, Pankaj Popli, Prasad Perlekar, and Surajit Sengupta, Phys. Rev. E (Letters), 104, L032601 (2021).

  12. “Inertia Drives a Flocking Phase Transition in Viscous Active Fluids”, Rayan Chatterjee, Navdeep Rana, R. Aditi Simha, Prasad Perlekar, and Sriram Ramaswamy, Phys. Rev. X, 11, 031063 (2021).

  13. “Paths to caustic formation in turbulent aerosols”, Jan Meibohm, Vikash Pandey, Akshay Bhatnagar, Kristian Gustavsson, Dhrubaditya Mitra, Prasad Perlekar, and Bernhard Mehlig, Phys. Rev. Fluids (Letters), 6, L062302 (2021).

  14. “Pseudo-turbulence in two-dimensional buoyancy-driven bubbly flows: A DNS study”, Rashmi Ramadugu, Vikash Pandey, and Prasad Perlekar, Eur. Phys. J. E, 43, 73 (2020). [EPJE Highlight]

  15. “Coarsening in the two-dimensional incompressible Toner-Tu equation: Signatures of turbulence”, Navdeep Rana, and Prasad Perlekar, Phys. Rev. E, 102, 032617 (2020).

  16. “Fixation in competing populations: Diffusion and strategies for survival”, Tapas Singha, Prasad Perlekar, and Mustansir Barma, Phys. Rev. Research, 2, 023412 (2020).

  17. “Liquid velocity fluctuations and energy spectra in three-dimensional buoyancy-driven bubbly flows”, Vikash Pandey, Rashmi Ramadugu, and Prasad Perlekar, J. Fluid Mech. (Rapids), 884, R6 (2020).

  18. “Clustering and energy spectra in two-dimensional dusty gas turbulence”, Vikash Pandey, Prasad Perlekar, and Dhrubaditya Mitra, Phys. Rev. E, 100, 013114 (2019) [Editor’s suggestion].

  19. “Kinetic energy spectra and flux in turbulent phase-separating symmetric binary-fluid mixtures”, Prasad Perlekar, J. Fluid Mech., 873, 459 (2019).

  20. “Topology of two-dimensional flow of dust and gas”, Dhrubaditya Mitra and Prasad Perlekar, Phys. Rev. Fluids, 3, 044303 (2018).

  21. “Spreading of nonmotile bacteria on a hard agar plate: Comparison between agent-based and stochastic simulations”, Navdeep Rana, Pushpita Ghosh, and Prasad Perlekar, Phys. Rev. E, 96, 052403 (2017).

  22. “An overview of the statistical properties of two-dimensional turbulence in fluids with particles, conducting fluids, fluids with polymer additives, binary-fluid mixtures, and superfluids”, 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).

  23. “Numerical analysis of the lattice Boltzmann method for simulation of linear acoustic waves”, Dattaraj B. Dhuri, Shravan M. Hanasoge, Prasad Perlekar, and Johan O.A. Robertsson, Phys. Rev. E, 95, 044306 (2017).

  24. “Two-dimensional turbulence in symmetric binary-fluid mixtures: Coarsening arrest by the inverse cascade”, Prasad Perlekar, Nairita Pal, and Rahul Pandit, Scientific Reports, 7, 44589 (2017).

  25. “Deviation-angle and trajectory statistics for inertial particles in turbulence”, Akshay Bhatnagar, Anupam Gupta, Dhrubaditya Mitra, Prasad Perlekar, Michael Wilkinson, and Rahul Pandit, Phys. Rev. E, 94, 063112 (2016).

  26. “Coherent structures and extreme events in rotating multiphase turbulent flows”, 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).

  27. “How long do particles spend in vortical regions in turbulent flows?”, Akshay Bhatnagar, Anupam Gupta, Dhrubaditya Mitra, Rahul Pandit, and Prasad Perlekar, Phys. Rev. E, 94, 053119 (2016).

  28. “Front structure and dynamics in dense colonies of motile bacteria: Role of active turbulence”, Rayan Chatterjee, Abhijeet A. Joshi, and Prasad Perlekar, Phys. Rev. E, 94, 013105 (2016).

  29. “Dynamics of circular arrangement of vorticity in two dynamics”, Rohith V. Swaminathan, S. Ravichandran, Prasad Perlekar, and Rama Govindarajan, Phys. Rev. E, 94, 013105 (2016).

  30. “Binary-fluid turbulence: Signatures of multifractal droplet dynamics and dissipation reduction”, Nairita Pal, Prasad Perlekar, Anupam Gupta, and Rahul Pandit, Phys. Rev. E, 93, 063115 (2016).

  31. “Inertial particle acceleration in strained turbulence”, Chung Min Lee, Armann Glyfason, Prasad Perlekar, and Federico Toschi, J. Fluid Mech., 785, 31 (2015).

  32. “Impact of the Peterlin approximation on polymer dynamics in turbulent flows”, Dario Vincenzi, Prasad Perlekar, Luca Biferale, and Federico Toschi, Phys. Rev. E, 92, 053004 (2015).

  33. “Clustering of vertically contrained passive particles in homogeneous, isotropic turbulence”, Massimo De Pietro, Michel A.T. van Hinsberg, Luca Biferale, Herman J.H. Clercx, Prasad Perlekar, Federico Toschi, Phys. Rev. E, 91, 053002 (2015).

  34. “Two-dimensional, homogeneous, isotropic fluid turbulence with polymer additives”, Anupam Gupta, Prasad Perlekar, and Rahul Pandit, Phys. Rev. E, 91,033013 (2015).

  35. “Internal dynamics and activated processes in soft-glassy materials”, Roberto Benzi, Mauro Sbragaglia, Andrea Scagliarini, Prasasd Perlekar, Massimo Bernaschi, Sauro Succi, and Federico Toschi, Soft Matter, 11, 1271 (2015).

  36. “Direct evidence of plastic events and dynamic heterogeneities in soft-glasses”, Roberto Benzi, Mauro Sbragaglia, Prasad Perlekar, Massimo Bernaschi, Sauro Succi, and Federico Toschi, Soft Matter, 10, 4615 (2014).

  37. “Attracting fixed points for heavy particles in the vicinity of a vortex pair”, S. Ravichandran, Prasad Perlekar, Rama Govindarajan, Phys. Fluids, 26, 013303 (2014).

  38. “Spinodal decomposition in homogeneous and isotropic turbulence”, Prasad Perlekar, Roberto Benzi, Herman J.H. Clercx, David R. Nelson, and Federico Toschi, Phys. Rev. Lett., 112, 014502 (2014).

  39. “Axisymmetric multiphase Lattice Boltzmann”, Sudhir Srivastava, Prasad Perlekar, Nishith Verma, and Federico Toschi, Phys. Rev. E, 88, 013309 (2013).

  40. “Cumulative compressibility effects on population dynamics in turbulent flows”, Prasad Perlekar, Roberto Benzi, David R. Nelson, and Federico Toschi, Journal of Turbulence, 14, 161 (2013).

  41. “Growth, competition and cooperation in spatial population genetics”, Simone Pigolotti, Roberto Benzi, Prasad Perlekar, Mogens H. Jensen, Federico Toschi, and David R. Nelson, Theoretical Population Biology, 84, 72 (2013).

  42. “Unified framework for a side-by-side comparison of different multicomponent algorithms: lattice Boltzmann vs. phase field model”, Luca Scarbolo, Dafne Molin, Prasad Perlekar, Mauro Sbragaglia, Alfredo Soldati, and Federico Toschi, J. Comp. Phys., 234, 263 (2013).

  43. “Statistics of polymer extensions in turbulent channel flow”, Faranggis Bagheri, Dhrubaditya Mitra, Prasad Perlekar, and Luca Brandt, Phys. Rev. E, 86, 056314 (2012).

  44. “Droplet size distribution in homogeneous, isotropic turbulence”, Prasad Perlekar, Luca Biferale, Mauro Sbragaglia, and Federico Toschi, Phys. Fluids, 24, 065101 (2012).

  45. “Convection in mutiphase flows using Lattice Boltzmann methods”, Luca Biferale, Prasad Perlekar, Mauro Sbragaglia, and Federico Toschi, Phys. Rev. Lett., 108, 104502 (2012).

  46. “Dynamical Multiscaling in Two-dimensional Fluid Turbulence”, Samriddhi Sankar Ray, Dhrubaditya Mitra, Prasad Perlekar, and Rahul Pandit, Phys. Rev. Lett., 107, 184503 (2011).

  47. “The persistence problem in two-dimensional fluid turbulence”, Prasad Perlekar, Samriddhi Sankar Ray, Dhrubaditya Mitra, and Rahul Pandit, Phys. Rev. Lett., 106, 054501 (2011).

  48. “Systematics of the magnetic-Prandtl-number dependence of homogeneous”, isotropic, magnetodyrodynamic turbulence, Ganapati Sahoo, Prasad Perlekar,
    and Rahul Pandit, New J. Phys., 13, 013036 (2011).

  49. “Direct numerical simulations of statistically steady homogeneous, isotropic fluid turbulence with polymer additives”, Prasad Perlekar, Dhrubaditya Mitra, and Rahul Pandit, Phys. Rev. E, 82, 066313 (2010).

  50. “Population dynamics at high Reynolds number”, Prasad Perlekar, Roberto Benzi, David R. Nelson, and Federico Toschi, Phys. Rev. Lett., 105, 144501 (2010).

  51. “Turbulence-induced melting of nonequilibrium vortex crystal in a forced thin fluid film”, Prasad Perlekar and Rahul Pandit, New J. Phys. 12, 023033 (2010).

  52. “Statistical properties of turbulence: An overview”, Rahul Pandit, Prasad Perlekar, and Samriddhi Sankar Ray, Pramana, 73, 157 (2009).

  53. “Statistically steady turbulence in thin films: direct numerical simulations with Ekman friction”, Prasad Perlekar and Rahul Pandit, New J. of Phys., 11, 073003 (2009).

  54. “Manifestations of Drag Reduction by Polymer Additives in Decaying, Homogeneous, Isotropic Turbulence”, Prasad Perlekar, Dhrubaditya Mitra, and Rahul Pandit, Phys. Rev. Lett., 97, 264501 (2006).

Peer reviewed conference proceedings

  1. “Simulations of a boiling system using a Lattice Boltzmann method”, Luca Biferale, Prasad Perlekar, Mauro Sbragaglia, and Federico Toschi, Commun. Comput. Phys., 13 696 (2013). 

  2. “A Study of Fluid Interfaces and Moving Contact Lines using the Lattice Boltzmann method”, Sudhir Srivastava, Prasad Perlekar, Luca Biferale, Mauro Sbragaglia, J. Ten Thije Boonkkamp, and Federico Toschi, Commun. Comput. Phys., 13 725 (2013). 

  3. “Population dynamics in compressible flows”, Roberto Benzi, Mogens H. Jensen, David R. Nelson, Prasad Perlekar, Simone Pigolotti, and Federico Toschi, European Physical Journal: Special Topics, 204, 1 (2012). 

  4. “Particle algorithms for population dynamics in flows”, Prasad Perlekar, Roberto Benzi, Simone Pigolotti, and Federico Toschi, J. Phys.: Conf. Ser., 333, 012013 (2011).

  5. “A Lattice Boltzmann method for turbulent emulsions”, Luca Biferale, Prasad Perlekar, Mauro Sbragaglia, Sudhir Srivastava, and Federico Toschi, J. Phys.: Conf. Ser., 318, 052017 (2011).

  6. “Statistics of population dynamics in turbulence”, Prasad Perlekar, Roberto Benzi, David R. Nelson, and Federico Toschi, submitted to J. Phys.: Conf. Ser., 318, 092025 (2011).

  7. “Direct numerical simulation on strained turbulent flows and particles within”, Armann Gylfason, Chung-min Lee, Prasad Perlekar, and Federico Toschi, J. Phys.:Conf. Ser., 318, 052003 (2011).

Book chapters

  1. “Stochastic competition between two populations in space”, 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).

PhD Thesis