Sk Zeeshan Ali

Sk Zeeshan Ali

Assistant Professor

zeeshan@ce.iith.ac.in

Publications

Book:

1 Dey S, Ali SZ (2024) Fluvial hydrodynamics - solutions manual. Springer, Switzerland

Journal:

  1. Karanam R, Ali SZ, Dey S (2026) Probabilities of sediment entrainment and estimation of bedload flux. Proceedings of Royal Society A, London, 482(2339), 20260081, https://doi.org/10.1098/rspa.2026.0081

  2. Ali SZ, Dey S. (2026) Scaling transitions in plane turbulent wall jets. Journal of Fluid Mechanics, Cambridge University Press, UK, 1028, A28, https://doi.org/10.1017/jfm.2025.11070

  3. Dey S, Mahato R, Ali SZ (2026) Scour due to submerged planar wall jets: A model. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 152(4), 04026010, https://doi.org/10.1061/JHEND8.HYENG-14644

  4. Castro-Orgaz O, Cantero-Chinchilla FN, Ali SZ, Dey S (2025) Vertically averaged and moment equations for free surface flows: pressure-Poisson solver, breaking waves, and morphodynamic modelling. Physics of Fluids, American Institute of Physics (AIP), 37(12), 125110, https://doi.org/10.1063/5.0307274

  5. Ali SZ, Karanam R, Dey S (2025) Rolling and lifting thresholds of sediment entrainment: effects of bed particle arrangement, particle exposure and slip-spinning motion. Proceedings of Royal Society A, London, UK, 481(2322), 20250185, https://doi.org/10.1098/rspa.2025.0185

  6. Cantero-Chinchilla FN, Castro-Orgaz O, Ali SZ, Dey S (2025) Experiments on flow over obstacle arrays: A database for turbulent flow and wave transformation modeling. Scientific Data, Nature, 12, 1517, https://doi.org/10.1038/s41597-025-05783-2

  7. Dey S, Ali SZ (2025) The universal two-thirds law of pipeline scour. Physics of Fluids, American Institute of Physics (AIP), 37(4), 041401, https://doi.org/10.1063/5.0264204

  8. Mahato R, Ali SZ, Dey S, Cantero-Chinchilla FN, Castro-Orgaz O, Solari L (2025) Formation of alternate river bars in submerged vegetated flows. Proceedings of Royal Society A, London, UK, 481(2309), 20240271, https://doi.org/10.1098/rspa.2024.0271

  9. Dey S, Ali SZ (2025) Scaling laws of turbulent wall-jet scour: Planar and circular wall jets. Physics of Fluids, American Institute of Physics (AIP), 37(2), 021401, https://doi.org/10.1063/5.0260064

  10. Cantero-Chinchilla FN, Castro-Orgaz O, Ali SZ, Dey S (2024) Shallow water hydrodynamics: Surge propagation and sill-controlled flows. Physics of Fluids, American Institute of Physics (AIP), 36(12), 125171, https://doi.org/10.1063/5.0240401

  11. Bhargavi T, Ali SZ (2024) Revisiting the analysis of self-formed threshold alluvial channels. Environmental Fluid Mechanics, Springer, 24(6), 1323-1348, https://doi.org/10.1007/s10652-024-10004-2

  12. Ali SZ, Dey S (2024) Universal skin friction laws for turbulent flow in curved tubes. Physics of Fluids, American Institute of Physics (AIP), 36(8), 081401, https://doi.org/10.1063/5.0222083

  13. Ali SZ, Dey S (2024) Generalized scaling law of equilibrium scour depth at a cylinder embedded in an erodible bed. Physics of Fluids, American Institute of Physics (AIP), 36(6), 065155, https://doi.org/10.1063/5.0214724

  14. Dey S, Ali SZ (2024) Turbulent friction in canonical flows: State of the science and future outlook. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 150(6), 04024044, https://doi.org/10.1061/JHEND8.HYENG-14109

  15. Dey S, Ali SZ (2024) The universal two-fifths law of pier scour. Physics of Fluids, American Institute of Physics (AIP), 36(4), 041401, https://doi.org/10.1063/5.0200865

  16. Cantero-Chinchilla FN, Castro-Orgaz O, Ali SZ, Dey S (2024) Experiments on hydraulic jumps over uneven bed for turbulent flow modelling validation in river flows. Scientific Data, Nature, 11, 313, https://doi.org/10.1038/s41597-024-03135-0

  17. Dey S, Mahato R, Ali SZ (2024) Linear and weakly nonlinear instabilities of sand waves by a turbulent Flow. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 150(3), 04024005, https://doi.org/10.1061/JHEND8.HYENG-13760

  18. Ali SZ, Dey S. (2023) Universal law of skin-friction coefficient in a fully developed zero pressure gradient axisymmetric turbulent boundary layer flow. Journal of Fluid Mechanics, Cambridge University Press, UK, 974, A31, https://doi.org/10.1017/jfm.2023.734

  19. Mahato R, Dey S, Ali SZ (2023) Hydrodynamics of turbidity currents evolving over a plane bed. Physics of Fluids, American Institute of Physics (AIP), 35(10), 105137, https://doi.org/10.1063/5.0169802

  20. Mahato R, Ali SZ, Dey S. (2023) Stability of longitudinal sediment waves formed by turbidity currents: Linear and weakly nonlinear perspectives. Proceedings of Royal Society A, London, UK, 479, 20230367, https://doi.org/10.1098/rspa.2023.0367

  21. Dey S, Mahato R, Ali SZ (2023) Turbulent shear flow over a downstream-skewed wavy bed: An analytical model based on the RANS equations with Boussinesq approximation. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 149(9), 04023028, https://doi.org/10.1061/JHEND8.HYENG-13577

  22. Mahato R, Dey S, Ali SZ (2022) Submarine channels formation driven by turbidity currents interacting with an erodible bed. Proceedings of Royal Society A, London, UK, 478(2263), 20220137, https://doi.org/10.1098/rspa.2022.0137

  23. Ali SZ, Dey S (2022) Discovery of the zeroth law of helicity spectrum in the pre-inertial range of wall turbulence. Physics of Fluids, American Institute of Physics (AIP), 34(7), 071401, https://doi.org/10.1063/5.0093998

  24. Ali SZ, Dey S (2022) Origin of the scaling laws of developing turbulent boundary layers. Physics of Fluids, American Institute of Physics (AIP), 34(7), 071402, https://doi.org/10.1063/5.0096255

  25. Mahato R, Dey S, Ali SZ (2022) Planform evolution of a sinuous channel triggered by curvature and autogenic width oscillations due to generic grain transport. Physics of Fluids, American Institute of Physics (AIP), 34(4), 044110, https://doi.org/10.1063/5.0087971

  26. Dey S, Mahato R, Ali SZ (2022) Linear stability of sand waves sheared by a turbulent flow. Environmental Fluid Mechanics, Springer, 22(2–3), 429–446, https://doi.org/10.1007/s10652-021-09813-6

  27. Mahato R, Dey S, Ali SZ (2021) Instability of a meandering channel with variable width and curvature: Role of sediment suspension. Physics of Fluids, American Institute of Physics (AIP), 33(11), 111401, https://doi.org/10.1063/5.0074974

  28. Ali SZ, Dey S (2021) Linear stability of dunes and antidunes. Physics of Fluids, American Institute of Physics (AIP), 33(9), 094109, https://doi.org/10.1063/5.0067079

  29. Ali SZ, Dey S, Mahato R (2021) Mega riverbed-patterns: Linear and weakly-nonlinear perspectives. Proceedings of Royal Society A, London, UK, 477(2252), 20210331, https://doi.org/10.1098/rspa.2021.0331

  30. Ali SZ, Dey S (2021) Interfacial instability of sand patterns induced by turbulent shear flow. International Journal of Sediment Research, Elsevier, 36(4), 449–456, https://doi.org/10.1016/j.ijsrc.2020.12.005

  31. Mahato RK, Ali SZ, Dey S (2021) Hydrodynamic instability of free river bars. Physics of Fluids, American Institute of Physics (AIP), 33(4), 045105, https://doi.org/10.1063/5.0045530

  32. Ali SZ, Dey S (2021) Instability of large-scale riverbed patterns. Physics of Fluids, American Institute of Physics (AIP), 33(1), 015109, https://doi.org/10.1063/5.0035893

  33. Ali SZ, Dey S (2020) The law of the wall: A new perspective. Physics of Fluids, American Institute of Physics (AIP), 32(12), 121401, https://doi.org/10.1063/5.0036387

  34. Dey S, Paul P, Ali SZ, Padhi E (2020) Reynolds stress anisotropy in flow over two-dimensional rigid dunes. Proceedings of Royal Society A, London, UK, 476(2242), 20200638, https://doi.org/10.1098/rspa.2020.0638

  35. Dey S, Ali SZ (2020) Fluvial instabilities. Physics of Fluids, American Institute of Physics (AIP), 32(6), 061301, https://doi.org/10.1063/5.0010038

  36. Dey S, Ali SZ, Padhi E (2020) Hydrodynamic lift on sediment particles at entrainment: Present status and its prospect. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 146(6), 03120001, https://doi.org/10.1061/(ASCE)HY.1943-7900.0001751

  37. Dey S, Ali SZ, Padhi E (2019) Bedload transport from analytical and turbulence phenomenological perspectives. International Journal of Sediment Research, Elsevier, 34(6), 509–530, https://doi.org/10.1016/j.ijsrc.2019.08.002

  38. Padhi E, Ali SZ, Dey S (2019) Mechanics of bed particle saltation in turbulent wall-shear flow. Proceedings of Royal Society A, London, UK, 475(2230), 20190318, https://doi.org/10.1098/rspa.2019.0318

  39. Dey S, Ali SZ, Padhi E (2019) Terminal fall velocity: The legacy of Stokes from the perspective of fluvial hydraulics. Proceedings of Royal Society A, London, UK, 475(2228), 20190277, https://doi.org/10.1098/rspa.2019.0277

  40. Dey S, Ali SZ (2019) Bed sediment entrainment by streamflow: State of the science. Sedimentology, Wiley, 66(5), 1449–1485, https://doi.org/10.1111/sed.12566

  41. Ali SZ, Dey S (2019) Hydrodynamics of a weakly curved channel. Physics of Fluids, American Institute of Physics (AIP), 31(5), 055110, https://doi.org/10.1063/1.5098827

  42. Ali SZ, Dey S (2019) Bed particle saltation in turbulent wall-shear flow: A review. Proceedings of Royal Society A, London, UK, 475(2223), 20180824, https://doi.org/10.1098/rspa.2018.0824

  43. Dey S, Ravi Kishore G, Castro-Orgaz O, Ali SZ (2019) Turbulent length scales and anisotropy in submerged turbulent plane offset jets. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 145(2), 04018085, https://doi.org/10.1061/(ASCE)HY.1943-7900.0001559

  44. Sarkar S, Ali SZ, Dey S (2019) Turbulence in wall-wake flow downstream of an isolated dunal bedform. Water 11(10), 1975, https://doi.org/10.3390/w11101975

  45. Dey S, Ali SZ (2018) Review article: Advances in modelling of bed particle entrainment sheared by turbulent flow. Physics of Fluids, American Institute of Physics (AIP), 30(6), 061301, https://doi.org/10.1063/1.5030458

  46. Dey S, Ali SZ, Padhi E (2018) Advances in analytical modeling of suspended sediment transport. Journal of Hydro-Environment Research, Elsevier, 20(June), 110–126, https://doi.org/10.1016/j.jher.2018.02.004

  47. Dey S, Ravi Kishore G, Castro-Orgaz O, Ali SZ (2018) Reynolds stress in submerged turbulent plane offset jets: Mathematical model. Journal of Engineering Mechanics, American Society of Civil Engineers (ASCE), 144(6), 06018001, https://doi.org/10.1061/(ASCE)EM.1943-7889.0001456

  48. Ali SZ, Dey S (2018) Impact of phenomenological theory of turbulence on pragmatic approach to fluvial hydraulics. Physics of Fluids, American Institute of Physics (AIP), 30(4), 045105, https://doi.org/10.1063/1.5025218

  49. Ali SZ, Dey S (2017) Hydrodynamic instability of meandering channels. Physics of Fluids, American Institute of Physics (AIP), 29(12), 125107, https://doi.org/10.1063/1.5012596

  50. Dey S, Ali SZ (2017) Origin of the onset of meandering of a straight river. Proceedings of Royal Society A, London, UK, 473(2204), 20170376, https://doi.org/10.1098/rspa.2017.0376

  51. Dey S, Ravi Kishore G, Castro-Orgaz O, Ali SZ (2017) Hydrodynamics of submerged turbulent plane offset jets. Physics of Fluids, American Institute of Physics (AIP), 29(6), 065112, https://doi.org/10.1063/1.4989559

  52. Dey S, Ali SZ (2017) Stochastic mechanics of loose boundary particle transport in turbulent flow. Physics of Fluids, American Institute of Physics (AIP), 29(5), 055103, https://doi.org/10.1063/1.4984042

  53. Ali SZ, Dey S (2017) Origin of the scaling laws of sediment transport. Proceedings of Royal Society A, London, UK, 473(2197), 20160785, https://doi.org/10.1098/rspa.2016.0785

  54. Dey S, Ali SZ (2017) Mechanics of sediment transport: Particle scale of entrainment to continuum scale of bedload flux. Journal of Engineering Mechanics, American Society of Civil Engineers (ASCE), 143(11), 04017127, https://doi.org/10.1061/(ASCE)EM.1943-7889.0001343

  55. Ali SZ, Dey S (2016) Mechanics of advection of suspended particles in turbulent flow. Proceedings of Royal Society A, London, UK, 472(2195), 20160749, https://doi.org/10.1098/rspa.2016.0749

  56. Ali SZ, Dey S (2016) Hydrodynamics of sediment threshold. Physics of Fluids, American Institute of Physics (AIP), 28(7), 075103, https://doi.org/10.1063/1.4955103

  57. Ali SZ, Dey S (2016) Theory of turbulent flow over a wavy boundary. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 142(6), 04016006, https://doi.org/10.1061/(ASCE)HY.1943-7900.0001125

  58. Ali SZ, Dey S (2016) Scaling laws of rough turbulent flows from turbulence phenomenology: An overview and a new approach. Proceedings of Indian National Science Academy 82(2, supplementary issue), 341–348, https://doi.org/10.16943/ptinsa/2016/48425

  59. Ali SZ, Dey S (2016) Entry flow in curved pipes: Turbulent boundary layer approach. Journal of Hydraulic Research, International Association for Hydro-Environment Engineering and Research (IAHR), 54(1), 90–101, https://doi.org/10.1080/00221686.2015.1086831

  60. Cantero-Chinchilla FN, Dey S, Castro-Orgaz O, Ali SZ (2015) Hydrodynamic analysis of fully-developed turbidity currents over plane beds based on self-preserving velocity and concentration distributions. Journal of Geophysical Research Earth Surface, American Geophysical Union (AGU), 120(10), 2176–2199, https://doi.org/10.1002/2015JF003685

Contact

zeeshan@ce.iith.ac.in