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. Ali SZ, Dey S. (2026) Scaling transitions in plane turbulent wall jets. Journal of Fluid Mechanics, Cambridge University Press, UK, in press
  2. 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), in press
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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
  47. 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
  48. 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
  49. 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
  50. 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
  51. 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
  52. 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
  53. 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
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. 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