Mehdi Raessi, Ph.D.

Associate ProfessorMehdi Raessi

Ph.D. in Mechanical Engineering, University of Toronto, 2008
M.A.Sc in Mechanical Engineering, University of Toronto, 2003
B.Sc. in Mechanical Engineering, University of Tehran, 1998

Contact Information:

web page:
Phone: 508-999-8496
Fax: 508-999-8881
Office: Textile Building, Room 226


Mehdi Raessi joined the Mechanical Engineering Department in 2010 following a postdoctoral study at NASA-Stanford University's Center for Turbulence Research (CTR). He obtained his PhD in Mechanical Engineering from the University of Toronto in 2008. During his graduate studies, he worked in the Centre for Advanced Coating Technologies (CACT).

Dr. Raessi's research is primarily focused on numerical simulations of interfacial flows and two-phase flows with phase change. Using numerical simulations, he has been studying the fluid flow and heat transfer in various applications including energy systems (renewable and conventional), materials processing, and environmentally friendly refrigeration systems. In addition to academic research and teaching, Dr. Raessi has industrial experience as a research and development (R&D) specialist and applied engineer.


  • Postdoctoral Fellowship, NASA-Stanford University’s Center for Turbulence Research
  • Industrial Research and Development Fellowship, Government of Canada
  • CFD Society of Canada Graduate Scholarship
  • Early Career Teaching Award, University of Toronto

Areas of Interest:

  • Interfacial flows
  • Two-phase flows with phase change
  • Microscale transport phenomena
  • Energy systems (renewable/conventional)
  • Materials processing
  • Biofluid mechanics
  • Multiscale multiphysics simulations
  • Computational fluid dynamics and heat transfer
  • Numerical methods for modeling multiphase flows
  • Scientific computing


Book chapter

  1. 1.       A. Sinkevich, S. Bhowmick, and M. Raessi, Strategies for overcoming transport limitations of convective desiccation of trehalose solutions for ambient temperature preservation of biologics, Multiscale Technologies for Cryomedicine - Implementation from Nano to Macroscale, Edited by Xiaoming He and John Bischof, World Scientific Publishing (2016).

Peer-reviewed journal papers

  1. A. Pathak and M. Raessi, A three-dimensional volume-of-fluid method for reconstructing and advecting three-material interfaces forming contact lines, Journal of Computational Physics, 307, pp. 550–573 (2016).
  2. A. Pathak and M. Raessi, A 3D, fully Eulerian, VOF-based solver to study the interaction between two fluids and moving rigid bodies using the fictitious domain method, Journal of Computational Physics, 311, pp. 87-113 (2016).
  3. C. Freniere, A. Pathak, M. Raessi, and G. Khanna, Feasibility of Amazon’s Cloud Computing Platform for Parallel GPU-Accelerated Multiphase Flow Simulations, Computing in Science and Engineering, 18 (5), pp. 68-77 (2016).
  4. A. Ghasemi, A. Pathak, and M. Raessi, Computational simulation of the interactions between moving rigid bodies and incompressible two-fluid flows, Computers and Fluids, Vol. 94, pp. 1-13 (2014).
  5. L. R. Berard, M. Raessi, M. T. Bauer, P. D. Friedman, and S. Codyer, An investigation on the breakup of underwater buoyant oil jets: computational simulations and experiments, Atomization and Sprays Vol. 23, pp. 981-1000 (2013).
  6. A. Amirzadeh Goghari, M. Raessi, and S. Chandra, Producing molten metal droplets smaller than the nozzle diameter using a pneumatic drop-on-demand generator, Experimental Thermal and Fluid Science Vol. 47, pp. 26–33 (2013).
  7. P. D. Friedman, S. Carey and M. Raessi, Influence of volatile degassing on initial flow structure and entrainment during undersea volcanic fire fountaining eruptions, Natural Science, Vol.4, No.12, 1002-1012 (2012).
  8. M. Raessi and H. Pitsch, Consistent mass and momentum transport for simulating incompressible interfacial flows with large density ratios using the level set method, Computers and Fluids, Vol. 63, pp. 70-81 (2012).
  9. M. Raessi, J. Mostaghimi, and M. Bussmann, A volume-of-fluid interfacial flow solver with advected normals, Computers and Fluids, Vol. 39, pp. 1401-1410 (2010).
  10. K. Shinoda, M. Raessi, J. Mostaghimi, T. Yoshida, and H. Murakami, Effect of substrate concave pattern on splat formation of Yttria-stabilized Zirconia in atmospheric plasma spraying, Journal of Thermal Spray Technology, Vol. 18, pp. 609-618 (2009).
  11. M. Raessi, M. Bussmann, and J. Mostaghimi, A semi-implicit finite volume implementation of the CSF method for treating surface tension in interfacial flows, International Journal for Numerical Methods in Fluids, Vol. 59, pp. 1093-110 (2009).
  12. I.V. Roisman, L. Opfer, C. Tropea, M. Raessi, J. Mostaghimi, and S. Chandra, Drop impact onto a dry surface: role of the dynamic contact angle, Colloids and Surfaces A, Vol. 322, pp. 183-191 (2008).
  13. M. Raessi, J. Mostaghimi, and M. Bussmann, Advecting normal vectors: a new method for calculating interface normals and curvatures when modeling two-phase flows, Journal of Computational Physics, Vol. 226, pp. 774-797 (2007).
  14. H.R. Salimijazi, M. Raessi, J. Mostaghimi, and T.W. Coyle, Study of solidification behavior and splat morphology of vacuum plasma sprayed Ti alloy by computational modeling and experimental observations, Surface and Coatings Technology, Vol. 201, pp. 7924-7931 (2007).
  15. M. Raessi, J. Mostaghimi, and M. Bussmann, Effect of surface roughness on splat shapes in the plasma spray coating process, Thin Solid Films, Vol. 506-507, pp. 133-135 (2006).
  16. M. Raessi and J. Mostaghimi, Three-dimensional modeling of density variation due to phase change in complex free surface flows, Numerical Heat Transfer, Part B: Fundamentals, Vol. 47, pp. 507-531 (2005).
  17. N.Z. Mehdizadeh, M. Raessi, S. Chandra, and J. Mostaghimi, Effect of substrate temperature on splashing of molten tin droplets, ASME Journal of Heat Transfer, Vol. 126, pp. 445-452 (2004).

Peer-reviewed conference papers:

  1. M. Raessi, M. Thiele, and B. Amirzadeh, Computational simulation of the impact and freezing of micron-size water droplets on super-hydrophobic surfaces, Proceedings of the ASME 2013 Summer Heat Transfer Conference, Minneapolis, USA, July 14-19, 2013 (HT2013-17749).
  2. S. Codyer, M. Raessi, G. Khanna, Using Graphics Processing Units to accelerate numerical simulations of interfacial incompressible flows, Proceedings of the ASME 2012 Fluids Engineering Summer Meeting, Rio Grande, Puerto Rico, July 8-12, 2012 (FEDSM2012-72176).
  3. M. Raessi and R. Sendha, Effects of heat transfer on the spreading and freezing of molten droplets impinging onto textured surfaces-A computational study, Proceedings of the ASME 2012 Summer Heat Transfer Conference, Puerto Rico, USA, July 8-12, 2012 (HT2012-58166).

 Peer-reviewed technical reports

  1. M. Raessi and H. Pitsch, Modeling interfacial flows characterized by large density ratios with the level set method, Annual Research Briefs, Center for Turbulence Research, Stanford, CA, 2009.
  2. M. Raessi, A level set based method for calculating flux densities in two-phase flows, Annual Research Briefs, Center for Turbulence Research, Stanford, CA, 2008.
  3. M. Herrmann, J.M. Lopez, P. Brady, and M. Raessi, Thermocapillary motion of deformable drops and bubbles, Proceedings of the 2008 Summer Program, Center for Turbulence Research, Stanford, CA, 2008.