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Our group uses micromechanics, micro-scale imaging videography, fundamental theories, and numerical simulations involving coupling between the Discrete Element Method and computational fluid dynamics (DEM-CFD) to better understand coupled processes in geomechanics at the relevant constituent scale. Examples are hydro-thermo-mechanical coupled processes in rock; particle-fluid multiphysics, flow and transport in geomechanics and mudflow mixture particle-air-water composition behavior.

Currently funded topics include

  • Post-wildfire mudflows
  • Enhanced Geothermal Systems (EGS) and hydrocarbon georeservoirs   
  • Seismic soil-structure interaction of precast concrete earth retaining walls

View our research through images, videos and data.

Ingrid Tomac, Ph.D.



Ingrid Tomac
Assistant Professor
Department of Structural Engineering
University of California San Diego
9500 Gilman Drive #0085, La Jolla, CA 92093-0085


Office: SME Bldg. Room 445D
Phone: (858) 822-3009
Mobile: (303) 803-5781
Fax: (858) 534 1310


  • : "A Numerical Study of Neutrally Buoyant Slickwater Proppant Flow and Transport in Rough Fractures" by Briana Yamashiro and Ingrid Tomac has been accepted for publishing in Geomechanics for Energy and the Environment!
  • : Professor Tomac has been awarded with ARMA's Distinguished Service Award for 2021 at the Junior level
  • : Assessment of Physical Properties of Water Repellent Soils Mahta Movasat; Ingrid Tomac has been accepted for publication in Journal of Geotechnical and Geoenvironmental Engineering!
  • : "Experimental Investigation of Proppant Clustering in Intersected Fractures", has been accepted for publication in Journal of Petroleum Exploration and Production Technology
  • : A new paper accepted for publishing in Computers and Geotechnics! Yamashiro B. and Tomac I. Particle Clustering Dynamics in Dense-Phase Particle-Fluid Slurries