Transport Phenomena - Delft University of Technology

Iman Ataei Dadavi

Iman Ataei Dadavi

Experimental X-ray and PIV studies of Low Prandtl number mixed convection flow in wall bounded coarse grained porous media - application to blast furnaces

Contact details

  • Iman Ataei Dadavi
  • Delft University of Technology
  • Faculty of Applied Sciences
  • Department of Chemical Engineering
  • Building 58, Room F2.150
  • van der Maasweg 9, Delft, The Netherlands

Research interests

  • Experimental Fluid Mechanics
  • Optical Diagnostic Techniques in Fluid Flows
  • Multi-phase Flow in Porous Media
  • Bluff-body Aerodynamics
  • Heat Transfer
  • Combustion and Spray

Latest publications

  • Impact of Surface Roughness on Capillary Trapping Using 2D-Micromodel Visualization Experiments, Helmut Geistlinger, Iman Ataei-Dadavi, and Hans-Jörg Vogel. Transport in Porous Media 2016, 112  (1), 207–227.
    [Full Details]     [BibTeX]     Publisher: [DOI] 
  • The impact of pore structure and surface roughness on capillary trapping for 2-D and 3-D porous media: Comparison with percolation theory, Helmut Geistlinger, Iman Ataei-Dadavi, Sadjad Mohammadian, and Hans-Jörg Vogel. Water Resources Research 2015, .
    [Full Details]     [BibTeX]     Publisher: [DOI] 
  • Influence of the Heterogeneous Wettability on Capillary Trapping in Glass-Beads Monolayers: Comparison Between Experiments and the Invasion Percolation Theory, Helmut Geistlinger and Iman Ataei-Dadavi. Journal of Colloid and Interface Science 2015, 459 , 230–240.
    [Full Details]     [BibTeX]     Publisher: [DOI] 


  • Researcher: Multiphase Flow in Porous Media, Helmholtz Centre for Environmental Research, Germany ( 2014-2015)
  • MSc: Aerospace Engineering (Aerodynamics & Propulsion), Sharif University of Technology, Iran (2010-2012)
  • BSc: Mechanical Engineering, Sharif University of Technology, Iran (2006-2010)


Research description

In the chain of steel production the blast furnace converts iron ore into liquid hot metal by carbothermic reduction. At the bottom of the furnace, the so-called hearth, in which the liquid metal is collected and tapped off, is filled with coarse-grained porous carbon structure. With the hot metal flowing in from the top and the walls of the hearth being cooled, the flow of liquid metal in hearth is a high Rayleigh number, high Reynolds number, low Prandtl number mixed convection flow in coarse grained porous media. Through the formation of hot spots, this flow has a large negative impact on the productivity of the blast furnace and on the lifetime of the hearth.

In this experimental research project we address the question how strong local non-uniformities hot spot arise in heat transfer from enclosure walls to mixed convection flows of low Prandtl number fluids, when the enclosure is filled with coarse grained porous medium.

To address this question and to get insight into the fundamental physics of the flow-structure interaction and the corresponding heat transfer, we will perform Particle Image Velocimetry (PIV) and Liquid Crystal Thermography (LCT) experiments on medium-Pr number (water) flows and X-ray particle tracking measurements on low-Pr number (room temperature liquid metal) flows in generic mixed convection flow configurations. The experimental results will be used for validation of engineering-type computational models.

Student Projects

Experimental Study of Natural Convection in Coarse-grained Porous Media
Last modified: June 22 2016. © Delft University of Technology - TP group 2012