People

Dr. Alexander Ukhov

Alexander Ukhov, PhD

Postdoctoral Fellows

Research Interests

Dr. Ukhov's research focuses on modeling of hydrodynamic flows with physical processes using advanced methods and algorithms of Computational Fluid Dynamics.

In particular, working in the Climate research group, he focuses on calculations of high Reynolds number turbulent flows with embedded complex lagrangian particles of complex shape. The implications of this study include modeling dust generation from a sandy surface, calculating flows around objects, and quantifying deposition of dust particles on different surfaces and at different environmental conditions.

For these purposes he has developed a 3D model, which simulates transport and deposition of micron-size particles in the turbulent airflow. One of the principal features of the model is that it accounts for momentum and energy exchange between a fluid and particles. The model is parallelized using MPI-technique and is highly scalable.

Another aspect of Dr. Ukhov’s work is associated with the modeling of formation, transport and dispersion of stratospheric aerosol particles created as a result of major volcanic eruptions. Volcanic aerosols could affect aviation operations and climate. For these purposes he is using well known Regional Weather Research and Forecasting (WRF) modeling system coupled with the chemical and aerosols module (WRF-CHEM), and simulates the initial stage of the largest in 20th century Mt. Pinatubo eruption in Philippines in June 1991.

Selected Publications

  • Simulation of the Influence of Surface Chemical Composition on Internal Gas Flow at Large Knudsen Numbers
    A. Ukhov, S. Borisov, B. Porodnov
    Int. J. of Heat and Mass Transfer, Vol.64, 719–724, (2013)

  • Numerical simulation of gas-dynamic conductivity of microchannels in the Knudsen limit with the surface structure consideration
    M. Kuznetsov, B. Porodnov, A. Ukhov, S. Borisov
    J. of Advanced Materials, Vol.10, 206-211, (2011)
  • Surface adsorption effect on the molecular heat exchange in rarefied gas – metal system
    A. Ukhov, S. Borisov, B. Porodnov
    J. of Thermophysics and Aerodynamics, Vol.17, No.1, 127-136, (2010)
  • Numerical simulations of gas-dynamic conductivity of micro channels with allowance for their surface structure
    A. Ukhov, B. Porodnov, S. Borisov
    J. of Applied Mechanics and Technical Physics, Vol.50, No.5, 747–753, (2009)
  • Education

    • PhD, Physics, Ural Federal University, Yekaterinburg, Russia, 2011
    • M.Sc., Ural Federal University, Yekaterinburg, Russia, 2007

    Professional Profile

    • 2014-Present: Postdoctoral Fellow, KAUST, Thuwal, Saudi Arabia

    KAUST Affiliations

    Division of Physical Sciences and Engineering (PSE)