Sk Zeeshan Ali


Zeeshan_photograph

Sk Zeeshan Ali

Assistant Professor
Department of Civil Engineering
Office: 408, Academic Block B
Email: zeeshan[at]ce.iith.ac.in
Phone: +91 40 2301 6318

Research Areas of Interest:

  • Analytical hydrodynamics
  • Turbulent boundary layer flows
  • Sediment transport
  • Fluvial instabilities

Education:

Ph.D. Department of Civil Engineering, Indian Institute of Technology Kharagpur

(Specialization: Hydraulic and Water Resources Engineering), 2019

M.Tech. Department of Civil Engineering, Indian Institute of Technology Kharagpur

(Specialization: Hydraulic and Water Resources Engineering), 2014

B.E. Department of Civil Engineering, Jadavpur University, 2012

Work Experience:

Assistant Professor (2019 –present)

Department of Civil Engineering Indian Institute of Technology Hyderabad, India

Research Associate (July – November 2019)

Department of Civil Engineering Indian Institute of Technology Kharagpur, India

Awards and Recognitions:

Willi H. Hager JHR Best Reviewer Award for outstanding reviews in the Journal of Hydraulic Research during the period 2015–2016

Membership of Professional Bodies:

1. Member, American Society of Civil Engineers (MASCE)

2. Member, International Association for Hydro-Environment Engineering and Research (MIAHR)

Reviewer of Journals:

1. Proceedings of Royal Society A, London, UK

2. Physics of Fluids, American Institute of Physics (AIP)

3. Journal of Geophysical Research, Earth Surface, American Geophysical Union

4. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE)

5. Journal of Hydraulic Research, International Association for Hydro-Environment Engineering and Research (IAHR)

6. Journal of Fluids Engineering, American Society of Mechanical Engineers (ASME)

7. Environmental Fluid Mechanics, Springer

8. Journal of Applied Mathematics and Mechanics (ZAMM), Wiley

9. Fluid Dynamics Research, Japan Society of Fluid Mechanics

10. International Journal of Sediment Research, Elsevier

11. Computers and Fluids, Elsevier

12. Water Resources Research, American Geophysical Union

13. Acta Geophysica, Polish Academy of Sciences, Springer

14. Sedimentology, Wiley

15. Advances in Water Resources, Elsevier

16. Journal of Hydrologic Engineering, American Society of Civil Engineers (ASCE)

17. Journal of Hydrology, Elsevier

18. Chaos, An Interdisciplinary Journal of Nonlinear Science, American Institute of Physics (AIP)

19. Journal of The Institution of Engineers (India): Series A, The Institution of Engineers (India)

Journal:

[1] 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), (in press)

[2] 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

[3] Mahato R, Dey S, Ali SZ (2023) Hydrodynamics of turbidity currents evolving over a plane bed. Physics of Fluids, American Institute of Physics (AIP), 35:105137

[4] 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

[5] 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), 149:04023028

[6] 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, 478:20220137

[7] 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), 34:071401

[8] Ali SZ, Dey S (2022) Origin of the scaling laws of developing turbulent boundary layers. Physics of Fluids, American Institute of Physics (AIP), 34:071402

[9] 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), 34:044110

[10] Dey S, Mahato R, Ali SZ (2022) Linear stability of sand waves sheared by a turbulent flow. Environmental Fluid Mechanics, Springer, 22:429–446

[11] 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), 33:111401

[12] Ali SZ, Dey S (2021) Linear stability of dunes and antidunes. Physics of Fluids, American Institute of Physics (AIP), 33:094109

[13] Ali SZ, Dey S, Mahato R (2021) Mega riverbed-patterns: linear and weakly-nonlinear perspectives. Proceedings of Royal Society A, London, UK, 477:20210331

[14] Ali SZ, Dey S (2021) Interfacial instability of sand patterns induced by turbulent shear flow. International Journal of Sediment Research, Elsevier, 36:449–456

[15] Mahato RK, Ali SZ, Dey S (2021) Hydrodynamic instability of free river bars. Physics of Fluids, American Institute of Physics (AIP), 33:045105

[16] Ali SZ, Dey S (2021) Instability of large-scale riverbed patterns. Physics of Fluids, American Institute of Physics (AIP), 33:015109

[17] Ali SZ, Dey S (2020) The law of the wall: A new perspective. Physics of Fluids, American Institute of Physics (AIP), 32:121401

[18] 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, 476:20200638

[19] Dey S, Ali SZ (2020) Fluvial instabilities. Physics of Fluids, American Institute of Physics (AIP), 32:061301

[20] 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), 146:03120001

[21] Dey S, Ali SZ, Padhi E (2019) Bedload transport from analytical and turbulence phenomenological perspectives. International Journal of Sediment Research, Elsevier, 34:509–530

[22] 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: 20190318

[23] Sarkar S, Ali SZ, Dey S (2019) Turbulence in wall-wake flow downstream of an isolated dunal bedform. Water 11:1975

[24] 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, 475:20190277

[25] Dey S, Ali SZ (2019) Bed sediment entrainment by streamflow: state of the science. Sedimentology, Wiley, 66:1449–1485

[26] Ali SZ, Dey S (2019) Hydrodynamics of a weakly curved channel. Physics of Fluids, American Institute of Physics (AIP), 31:055110

[27] Ali SZ, Dey S (2019) Bed particle saltation in turbulent wall-shear flow: a review. Proceedings of Royal Society A, London, UK, 475:20180824

[28] 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), 145:04018085

[29] 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), 30:061301

[30] Dey S, Ali SZ, Padhi E (2018) Advances in analytical modeling of suspended sediment transport. Journal of Hydro-Environment Research, Elsevier, 20:110–126

[31] 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), 144:0601800

[32] 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), 30:045105

[33] Ali SZ, Dey S (2017) Hydrodynamic instability of meandering channels. Physics of Fluids, American Institute of Physics (AIP), 29:125107

[34] Dey S, Ali SZ (2017) Origin of the onset of meandering of a straight river. Proceedings of Royal Society A, London, UK, 473:20170376

[35] 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), 29:065112

[36] Dey S, Ali SZ (2017) Stochastic mechanics of loose boundary particle transport in turbulent flow. Physics of Fluids, American Institute of Physics (AIP), 29:055103

[37] Ali SZ, Dey S (2017) Origin of the scaling laws of sediment transport. Proceedings of Royal Society A, London, UK, 473:20160785

[38] 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), 143:04017127

[39] Ali SZ, Dey S (2016) Mechanics of advection of suspended particles in turbulent flow. Proceedings of Royal Society A, London, UK, 472:20160749

[40] Ali SZ, Dey S (2016) Hydrodynamics of sediment threshold. Physics of Fluids, American Institute of Physics (AIP), 28:075103

[41] Ali SZ, Dey S (2016) Theory of turbulent flow over a wavy boundary. Journal of Hydraulic Engineering, American Society of Civil Engineers (ASCE), 142:04016006

[42] 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 82:341–348

[43] Ali SZ, Dey S (2016) Entry flow in curved pipes: turbulent boundary layer approach. Journal of Hydraulic Research, International Association for HydroEnvironment Engineering and Research (IAHR), 54:90–101

[44] Cantero-Chinchilla FN, Dey S, Castro-Orgaz O, Ali SZ (2015) Hydrodynamic analysis of fully developed turbidity currents over plane beds based on selfpreserving velocity and concentration distributions. Journal of Geophysical Research Earth Surface, American Geophysical Union (AGU), 120:2176–2199

Conference Proceedings:

[1] Dey S, Ali SZ (2018) Phenomenological description of scaling laws of sediment transport. Proceedings of River Flow 2018, Lyon, France, 40:04001

[2] Ali SZ, Dey S (2018) Phenomenology of meandering of a straight river. Proceedings of River Flow 2018, Lyon, France, 40:05004

[3] Ali SZ, Dey S (2017) Turbulent shear flow over a sinusoidal bed. Proceedings of Thirty-Seventh International Association for Hydraulic Research World Congress, Kuala Lumpur, Malaysia, 362–371

[4] Dey S, Ali SZ (2017) Sediment inception by stream flow: a novel mathematical model. Proceedings of Thirty-Seventh International Association for Hydraulic Research World Congress, Kuala Lumpur, Malaysia, 372–381

[5] Dey S, Ali SZ (2016) Hydrodynamics of sediment transport: grain scale to continuum scale. Proceedings of Eighth International Conference on Scour and Erosion (ICSE-2016), Oxford, UK, CD-ROM

Teaching:

Fluid mechanics, Hydraulic engineering, Open-channel hydraulics and sediment transport

Research:

I work on applied hydrodynamics, turbulent boundary layer flows, river hydraulics, sediment transport, and fluvial instabilities.