Publications

Technical Journal Publications

  1.     Tomac, I. and Gutierrez, M. Discrete element modeling of non-linear submerged particle collisions. Granular Matter, Volume 15, p. 759-769 (2013).

 2.     Tomac, I., Gutierrez, M. Fluid lubrication effects on particle flow in a channel. International Journal of Multiphase Flow. Volume 65, p. 143-156 (2014).

 3.     Tomac, I., Gutierrez, M. Micromechanics of proppant agglomeration during settling in hydraulic fractures. Journal of Petroleum Exploration and Production Technology, p. 1-18 (2015).

 4.     Tomac, I., Gutierrez, M. Formulation and implementation of coupled forced heat convection and heat conduction in DEM. Acta Geotechnica. Volume 10, p. 421-433 (2015).

 5.     McCartney, J.S., Sánchez, M., and Tomac, I. Energy geotechnics: Advances in subsurface energy recovery, storage, and exchange. Computers and Geotechnics. Volume 75, p. 244-256. (2016)

 6.     Tomac, I., M. Gutierrez. Coupled hydro-thermo- mechanical modeling of hydraulic fracturing in quasi-brittle rocks using DEM. Journal of Rock Mechanics and Geotechnical Engineering. (2016). 1.     http://dx.doi.org/10.1016/j.jrmge.2016.10.001. 1-13 (2016).

 7.     Tomac, I., Sauter, M.A Review on challenges in the assessment of geomechanical rock performance for deep geothermal reservoir development. Renewable and Sustainable Energy Reviews. (2016). In review.

 8.     Luo L., Tomac, I. Experimental setup for slurry gravity settling in narrow fracture. Geotechnical Testing Journal. (2016). In review.

 9.     Luo L., Tomac, I. Experimental investigation of particle agglomeration effects on slurry settling in Viscous Fluid. Transport in Porous Media. (2016). In review.

 10.  Caulk R., Tomac, I. Reuse of abandoned oil and gas wells for geothermal energy production. Renewable Energy. (2016). In review.

 11.     Tomac, I., Gutierrez, M. Hydro-thermo-mechanical modeling of convective heat flow from a borehole in rock. Geothermics. In review


Technical Conference Publications

1.     Caulk, R., Tomac, I. Reuse of abandoned oil and gas wells for geothermal energy production. AGU Fall Meeting, San Francisco, CA, USA. (2016)

2.     Tomac, I., Gutierrez, M. Quantification of transient heat flow and damage around the borehole using conductive-convective heat flow and transport DEM model in synthetic rock. Proceedings of the 4th Itasca Symposium on Applied Numerical Modeling, Lima, Peru. p. 559-569 (2016).

3.     Tomac, I. Hydro-thermo-mechanical behavior of granular material near the wellbore. Geo-Chicago 2016: Geotechnics for Sustainable Energy, Chicago, IL, USA. p. 22-31. (2016).

4.     Luo, L., Tomac, I. Particle image velocimetry analysis of proppant settling in a narrow slot. ARMA 2016, Houston, Texas, USA. ARMA-2016-652. (2016).

5.     Luo, L. and Tomac, I. Experimental study of proppant particle-particle interaction micromechanics during flow and transport in the fracture. 1st International Conference on Energy Geotechnics ICEGT 2016 in Kiel, Germany. p. 231-238. (2016).

6.     Tatomir, A.B., Tomac, I., Sauter, M. A parametric sensitivity study on CO2 injection in deep saline aquifers accounting for hydro-mechanical micro fracturing. 1st International Conference on Energy Geotechnics ICEGT 2016 in Kiel, Germany. p. 223-230. (2016).

7.     Tomac, I., Tatomir, A.B., Sauter, M., Effect of fracture surface damage on fluid flow and transport in geo-reservoirs. Second EAGE Workshop on Geomechanics and Energy, Celle, Germany. (2015).

8.     Tomac, I., Gutierrez, M. The effect of loading rate on hydraulic fracturing in synthetic granite: A Discrete element study. 2015 AGU Fall Meeting, San Francisco, CA, USA. (2015).

9.     Tomac, I., Gutierrez, M. Micromechanics of hydro-thermo-mechanical fracture propagation in granite. ARMA, Minneapolis, Minnesota, USA. (2014).

10.  Tomac, I., Gutierrez, M. Coupled hydro-thermo-mechanical modeling of hydraulic fracturing in quasi-brittle rocks using DEM. IS-Cambridge, UK. (2014).

11.  Tomac, I., Salkovic, A., Pest, D. Case history on determination of old bridge foundation depths using parallel seismic method. XV Danube - European Conference on Geotechnical Engineering (DECGE). (2014).

12.  Tomac, I., Gutierrez, M. Particulate modeling of sand slurry flow retardation. 18th International Conference on Soil Mechanics and Geotechnical Engineering (ICSMGE), Paris, France. September. (2013).

13.  Tomac, I., Gutierrez, M. Numerical study of horizontal proppant flow and transport in a narrow hydraulic fracture. 47th U.S. Rock Mechanics/Geomechanics Symposium ARMA, San Francisco, USA. June. (2013).

14.  Tomac, I., Gutierrez, M. DEM study of hydraulic fracturing in enhanced geothermal systems. European Geothermal Congress, Pisa, Italy. June. (2013).

15.  Tóth, A.N., McCartney, J.S., Tomac, I., Balla, L. Geothermal E-learning through Hungarian-American cooperation. European Geothermal Congress, Pisa, Italy. June. (2013).

16.  Tomac, I., Gutierrez, M. DEM Study of proppant settling in a rough hydraulic fracture in granite. DEM6 International Conference, Golden, CO. August. (2013).

17.  Tomac, I., Gutierrez, M. Convective-conductive heat flow in granite. DEM6 International Conference, Golden, CO. August. (2013).

18.  Tomac, I, Gutierrez, M. Evaluation of the Brazilian test size effect using Discrete Element Modeling. 46th U.S. Rock Mechanics/Geomechanics Symposium ARMA, Chicago, USA. (2012).

19.  Tomac, I., Čorko, D. Braced deep excavation projects in the City of Zagreb - Execution details and risk sources. 5th Meeting of the Croatian Geotechnical Society, Osijek, Croatia. (2009).

20.  Marić, B., Tomac, I., Puljak, S. Lovrenćić, D. Settlement measurements in the area of the town of Sisak over a period of 30 years. 6th Austrian Geotechnik Tagung, "Vienna - Terzaghi Lecture", Vienna, Austria. (2007).

21.  Tomac, I., Marić, B. Deep excavation case histories in the City of Zagreb. XIII Danube-European Conference on Geotechnical Engineering. Ljubljana, Slovenia. (2006).

22.  Čorko, D., Tomac, I., Leko, I., Lašić, A. Jet-grouting application for landslide remediation. In-country training program, principles of design, rehabilitation and monitoring of landslides. Sarajevo, Bosnia and Herzegovina. (2005).

23.  Tomac, I, Van Impe, W.F., Verástegui Flores, R.D., Mengé, P. Binder-soil interaction in cement deep mixing through SEM analysis. 16th ICSMGE Osaka, Japan. (2005).

24.  Tomac, I., Marić, B. Foundation design of the new cable stayed bridge over the Kupa river in the town of Sisak. Book of Papers of the 1st Meeting of Croatian Bridge Constructors, Brijuni Islands, Croatia. (2005).

25.  Čorko, D., Marić, B. Lovrenčić, D. Tomac, I. The application of jet-grouting method for landslide remediation. The 5th Šuklje Day, Rogaška Slatina, Slovenia. (2004).

26.  Čorko, D., Marić, B. Lovrenčić, D. Tomac, I. Application of jet grouting in slide remediation. ASEP-GI Paris, France. (2004).

27.  Marić, B., Kvasnička, P. Radaljac, D. Škacan, B. Tomac, I. Use of combined soil nailing and geotechnical anchor system as the retaining structure for an open excavation. 3rd Nonveiller lecture, Hvar, Croatia. (2004)

28.  Tomac, I. Retaining structure for basement deepening. XIV European Young Geotechnical Engineering Conference (EYGEC), Plovdiv, Bulgaria. (2001)

29.  Tomac, I. Soil nailed retaining structure for the open excavation. International Young Geotechnical Engineering Conference (IYGEC), Southampton, UK. (2000).  

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