People

Nadim Zgheib

Assistant Professor

Office: ELRC 7002
Extension: 3361
Email: nadim.zgheib@lau.edu.lb

Office Hours:
T: 11:00-12:00

Curriculum vitae

Research interests

Airborne transmission, Bed-flow interactions, Geophysical flows, Frost buildup.

Current Projects

  • Accurate estimation of airborne virus transmission from indoor air-conditioning units (Project funded by LG Electronics in Korea)
  • Statistical approach for mitigating airborne viral transmission in indoor spaces using high-fidelity simulations (funded by The National Science Foundation)

Contracts and Grants

  • Co-author LG Electronics grant, 2021-2023
    Accurate estimation of airborne virus transmission from indoor air-conditioning units
  • Co-author National Science Foundation grant, 2021-2023
    Statistical approach for mitigating airborne viral transmission in indoor spaces using high-fidelity simulations
  • Subcontract University of Florida, 2020
    Investigating strata in two-way coupled, turbulent bed-flow simulations
  • CO-PI ExxonMobil grant, 2016
    Turbulence-informed models for shallow water simulations of turbidity currents

List of Publications

Refereed journal articles

  1. Zgheib, N., Farzaneh M., Balachandar S. & Sherif S., A physics-based model for frost buildup under turbulent flow using direct numerical simulations. International Journal of Heat and Mass Transfer, doi.org/10.1016/j.ijheatmasstransfer.2021.121915, 2021
  2. Guan, L., Salinas, J. S., Zgheib, N., & Balachandar, S., Force and torque model sensitivity and coarse graining for bedload-dominated sediment transport. European Journal of Mechanics - B/Fluids, , doi.org/10.1016/j.euromechflu.2021.09.005, 2021
  3. Liu, K., Allahyari, M., Salinas, J., Zgheib, N. & Balachandar, S., Investigation of Theoretical Scaling Laws Using Large Eddy Simulations for Airborne Spreading of Viral Contagion from Sneezing and Coughing, Physics of Fluids, doi.org/10.1063/5.0054651, 2021
    Chosen as Featured paper and appeared in a press release
  4. Liu, K., Allahyari, M., Salinas, J., Zgheib, N. & Balachandar, S., Peering inside a cough or sneeze to explain enhanced airborne transmission under dry weather, Scientific Reports, doi.org/10.1038/s41598-021-89078-7, 2021
  5. Guan, L., Salinas, J. S., Zgheib, N., & Balachandar, S., The role of bed-penetrating Kelvin–Helmholtz vortices on local and instantaneous bedload sediment transport. Journal of Fluid Mechanics, 911, doi.org/10.1017/jfm.2020.1060, 2021
  6. Liu K., Zgheib N., & Balachandar S., On the spreading of non-canonical thermals from direct numerical simulations, Physics of Fluids, 32(2), doi.org/10.1063/1.5138981, 2020
  7. Zgheib N., & Balachandar S., On the role of sidewalls in the transition from straight to sinuous bedforms, Geophysical Research Letters, doi.org/10.1029/2019GL084098, 2019
  8. Zgheib N., & Balachandar S., Linear stability analysis of subaqueous bedforms using direct numerical simulations, Theoretical & Computational Fluid Dynamics 33(2), 161-180, doi.org/10.1007/s00162-019-00487-x, 2019
  9. Zgheib N., Fedele J., Hoyal D., Perillo M. & Balachandar S., Direct numerical simulation of transverse ripples: 1. Pattern initiation and bedform interactions, Journal of Geophysical Research: Earth Surface, 123, doi.org/10.1002/2017JF004398, 2018
  10. Zgheib N., Fedele J., Hoyal D., Perillo M. & Balachandar S., Direct numerical simulation of transverse ripples: 2. Flow dynamics, self-similarity, and effect of neighbouring structures, Journal of Geophysical. Research: Earth Surface, 123, doi.org/10.1002/2017JF004399,2018
  11. Zgheib N., Bonometti T. & Balachandar S., Suspension-driven gravity surges on horizontal surfaces: effect of the initial shape, Computers & Fluids, 158, 84-95, doi.org/10.1016/j.compfluid.2017.03.016 , 2017
  12. Zhu S.J., Zgheib N., Balachandar S. & Ooi A., Front dynamics of elliptical gravity currents on a uniform slope, Physical Review Fluids 2(6), 064801, doi.org/10.1103/PhysRevFluids.2.064801, 2017
  13. Zgheib N., Ooi A. & Balachandar S., Front dynamics and entrainment of finite circular gravity currents on an unbounded uniform slope, Journal of Fluid Mechanics, 801, 322-352, doi.org/10.1017/jfm.2016.325, 2016
  14. Zgheib N., Bonometti T. & Balachandar S., Dynamics of non-circular finite release gravity currents, Journal of Fluid Mechanics, 783, 344-378, doi.org/10.1017/jfm.2015.580, 2015
  15. Zgheib N., Bonometti T. & Balachandar S., Propagation and deposition of non-circular finite release particle-laden currents, Physics of Fluids, 27(8), 086604, doi.org/10.1063/1.4929397, 2015
  16. Zgheib N., Bonometti T. & Balachandar S., Direct numerical simulations of cylindrical particle-laden gravity currents, Computers & Fluids, 123, 23-31, https://doi.org/10.1016/j.compfluid.2015.09.001, 2015
  17. Zgheib N., Bonometti T. & Balachandar S., Long-lasting effect of initial configuration in gravitational spreading of material fronts, Theorertical & Computional Fluid Dynamics., 28, 521-529, https://doi.org/10.1007/s00162-014-0330-9, 2014

Conference Papers and Presentations

  1. Salinas, J., Liu, K., Allahyari, M., Zgheib, N. & Balachandar, S., Investigation of Airborne Spreading of Viral Contagion from Sneezing and Coughing through high-fidelity simulations, Thermal and Fluids Eng. Conf., 2022
  2. Farzaneh M., Zgheib N., Sherif S. & Balachandar S., Frost deposition in turbulent flow over a cold plate using direct numerical simulation, Thermal and Fluids Eng. Conf., 2022
  3. Salinas, J., Zgheib, N., Balachandar, S. & Kalivelampatti, K., A statistical approach to viral airborne risk assessment using high-fidelity simulations, Thermal and Fluids Eng. Conf., 2022
  4. Zgheib N., Guan L., Salinas J. & Balachandar S., Direct numerical simulations of bedload transport over inclined particle beds, APS DFD, 2020
  5. Guan L., Salinas J., Zgheib N. & Balachandar S., On The Large Fluctuations Of The Local Particle Flux For Bedload Dominated Transport, APS DFD, 2020
  6. Farzaneh M., Zgheib N., Sherif S. & Balachandar S., Direct Numerical Simulations of Frost Buildup Below Turbulent Flow, APS DFD, 2020
  7. Zuniga S., Salinas J., Zgheib N., Cantero M. & Balachandar S., Properties of long-running submerged turbidity currents, APS DFD, 2020
  8. Balachandar S., Zwick D., Moore C., Yang Y., Zgheib N., Guan L. & Salinas J.,  Euler-Lagrange simulations that capture fully resolved physics for particle-laden geophysical flows, AGU                               2019
  9. Zgheib N., & Balachandar S., Two-way coupled direct numerical simulations of sinuous-crested bedforms, APS DFD, 2019
  10. Zgheib N., Fedele J., Hoyal D., Perillo M. & Balachandar S., Bedform dynamics from coupled bed-flow direct numerical simulations, The Fifth International Francophone Congress of Advanced Mechanics (CIFMA), 2019
  11. Shringarpure M., Fedele J., Zgheib N., Balachandar S., Hoyal D., Perillo M., Kumar, A. Vishnampet R. & Sun H.,  Numerical investigation of bedforms by turbidity currents (EP43C-1891), EFMC, 2018
  12. Balachandar S., Zgheib N., Fedele J., Hoyal D. &, Perillo M., Pattern initiation, bedform interactions, and self-similarity of transverse ripples using direct numerical simulations, Int. Symp. on Environmental Hydraulics, 2018
  13. Zgheib N., Fedele J., Hoyal D., Perillo M. & Balachandar S.,  Pattern formation under turbulent flows from direct numerical simulations (EP43C-1891), AGU, 2017
  14. Zgheib N., Fedele J., Hoyal D., Perillo M. & Balachandar S.,  Direct numerical simulations of fluvial bedforms under turbulent flow, APS DFD, 2017
  15. Bonometti, T., Zgheib N. & Balachandar S.,  Compositional/turbidity currents of non-circular horizontal cross-section: a summary of some recent results, IUTAM/AMERIMECH Symposium – UCSB, 2017
  16. Zgheib N., Bonometti, T. & Balachandar S.,  Suspension-driven gravity surges on horizontal surfaces: effect of the initial shape, APS DFD, 2016
  17. Zhu, S., Zgheib N., Balachandar, S. & Ooi, A.,  Front dynamics of elliptical gravity currents on a uniform slope, Australasian Heat & Mass Transfer Conference, 2016
  18. Ooi, A., Zgheib N. & Balachandar, S.,  Direct Numerical Simulation of Three-Dimensional Gravity Current on a Uniform Slope, International Conference on Fluid Mechanics, 2015
  19. Ooi, A., Zgheib N. & Balachandar, S.,  Numerical simulations of a 3d gravity current moving down a uniform slope, APS DFD Gallery of fluid motion, 2015
  20. Bonometti, T., Zgheib N. & Balachandar, S.,  Self-similar behavior of non-planar non-circular gravity currents, APS DFD, 2015
  21. Ooi, A., Zhu, S., Zgheib N. & Balachandar, S.,  Computational study of the formation and evolution of a three-dimensional gravity current, APS DFD, 2015
  22. Zgheib N., Bonometti, T. & Balachandar S.,  Spreading of non-planar non-axisymmetric gravity and turbidity currents, APS DFD, 2014
  23. Zgheib N., Bonometti, T. & Balachandar, S.,  Dynamics of non-circular gravity currents, APS DFD, 2013
  24. Zgheib N., Bonometti, T. & Balachandar, S.,  Asymmetric spreading in gravity currents, APS DFD, 2012
  25. Zgheib N. & Majdalani, J.,  Axial waves in simulated rocket motors, AIAA JPC, 2010

Academic degrees

Ph.D. (Joint PhD), Mechanical Engineering, University of Florida, Gainesville, FL, USA, & Institut de Mécanique des Fluides de Toulouse, Toulouse, France, 2015
M.S., Aerospace Engineering, University of Tennessee Space Institute, Tullahoma, TN, USA, 2009
B.E.,Mechanical Engineering, Notre Dame University, Louaize, Lebanon, 2007