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Sigurdur Thoroddsen

Professor, Mechanical Engineering

Physical Science and Engineering Division


High-Speed Fluids Imaging Laboratory

Education Profile

  • ​​​​Ph.D. Applied Mechanics, University of California, San Diego, 1991
  • M.S. Civil Engineering, Colorado State University, 1986
  • B.S. Mechanical Engineering, University of Iceland, 1982

Research Interests


Professor Thoroddsen's research work has appeared in 95 journal publications and over 60 proceedings, reports and abstracts. His work is in the area of experimental fluid mechanics, focusing on the use of ultra-high-speed video imaging to study the dynamics of free-surface flows and Tomo-PIV studies in turbulence. This includes the coalescence and breakup of drops and bubbles, splashing and spray formation, as well as the dynamics of fine jets of relevance to inkjet printers.

He is also interested in coating flows, the dynamics of granular media, laser-produced cavitation dynamics and the spinning of nanofibers from electrified drops.

Selected Publications

  • ​Mansoor, M., Marston, J. O., Vakarelski, I. U. & Thoroddsen, S. T., “Water entry without surface seal: extended cavity formation”, J. Fluid Mech., 743, 295-326 (2014).
  • Casey, T. A., Sakakibara, J. & Thoroddsen, S. T., “Scanning Tomographic Particle Image Velocimetry applied to a turbulent jet”, Phys. Fluids, 25, 025102 (2013).
  • Vakarelski, I. U., Patankar, N. , Marston, J. O., Chan, D. & Thoroddsen, S. T., “Stabilization of Leidenfrost vapour layer by textured superhydrophobic surfaces”, Nature, 489, 472-477 (2012).
  • Thoraval, M.-J., Takehara, K., Etoh, T. G., Popinet, S., Ray, P. Josserand, C., Zaleski, S. & Thoroddsen, S. T., “Von Karman vortex street within an impacting drop”, Phys. Rev. Lett., 108, 264506 (2012).
  • Vakarelski, I. U., Marston, J. O., Chan, D. Y. C. & Thoroddsen, S. T., “Drag reduction by Leidenfrost vapor layers”, Phys. Rev. Lett., 106, 214501 (2011).
  • Thoroddsen, S. T., Etoh, T. G. & Takehara, K., “High-speed imaging of drops and bubbles “, Ann. Rev. Fluid Mech., 40, 257-285 (2008).