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Alexander Abboud, Ph.D.

Chemical Engineer

Research Areas:
CFD Simulations; Multiphase flow modeling


Dr. Alexander W. Abboud is a chemical engineer with expertise in multiphase flow modeling, specifically with past experience in particle modeling with applications of aqueous precipitation and coal combustion, as well as analysis, validation and development of CFD simulations. His current research at INL includes CFD modeling of glass waste melters for vitrification of legacy waste, and modeling wind flows for use in dynamic line ratings of power transmission lines.

He conducted research at the University of Utah’s Institute for Clean and Secure Energy with focus in: development of quadrature method of moments in computational fluid dynamic code with large eddy simulation; development of a synthetic turbulent inlet condition in CFD code to accurately reflect non-constant velocity profiles at high Reynolds numbers in the domain; development conditional quadrature method of moments to model N-dimensional internal coordinates of particles in the codebase; and development of a parsing tool for library look-up of aqueous phase chemistry and flamelet combustion modeling using DARS.

Dr. Abboud also has experience as an associate lecturer in numerical methods courses at the University of Utah. He was an engineering intern at ST Cardio Technologies, LLC.

Digital Profiles:

​Ph.D., Chemical Engineering - University of Utah

B.S., Chemical Engineering - University of California






​Abboud, A.W., Guillen, D.P., Pokorny, R. (2020), “Effect of cold cap coverage and emissivity on the plenum temperature in a pilot-scale waste vitrification melter.” International Journal of Applied Glass Science, 11, pp. 357-368.


Abboud, A.W., Gentle, J.P., McJunkin, T.R., Lehmer, J.P., (2020), “Using Computational Fluid Dynamics of Wind Simulations Coupled with Weather Data to Calculate Dynamic Line Ratings.” IEEE Transactions on Power and Delivery, 35 (2), pp. 745-753.


Abboud A.W., Dufek, E.J., Liaw, B. (2019), “Implications of Local Current Density Variations on Lithium Plating Affected by Cathode Particle Size.” Journal of the Electrochemical Society, 166 (4), A667-A669.


Abboud A.W., Fenton K.F., Fehringer B.A., Gentle, J.P., McJunkin, T.R., Lehmer, J.P., LeBlanc K.L., Petty, M.A., Wandishin M.S. (2019) “Coupling Computational Fluid Dynamics with the High Resolution Rapid Refresh Model for Forecasting Dynamic Line Ratings.” Electric Power Systems Research, 170, pp. 326-327.


Abboud, A.W. & Guillen, D.P. (2018) “Response Surface Data for Sensitivity Study of Industrial Spray Injected Fluidized Bed Reactor.” Data in Brief, 21, pp. 154-166.


Guillen, D.P. and Abboud A.W. (2019) “Sensitivity Study of Forced Convection Bubbling in a Transparent Viscous Fluid as a Proxy for Molten Borosilicate Glass.” Annals of Nuclear Energy, 125, pp. 38-49.

Guillen, D.P., Abboud, A.W., Fox, K. (2019) “Particle Settling in a Simulated Melter Discharge Riser.” Materials Letters, 326, pp. 38-41.

Abboud, A. W., & Guillen, D. P. (2018). “Sensitivity study of a full-scale industrial spray-injected fluidized bed reactor.” Powder Technology, 334, pp. 36-52.

Abboud, A. W., & Guillen, D. P. (2018). “A methodology to reduce the computational cost of transient multiphysics simulations for waste vitrification.” Computers & Chemical Engineering, 115, pp. 64-80.

Guillen, D. P., Cambareri, J., Abboud, A. W., & Bolotnov, I. A. (2018). “Numerical comparison of bubbling in a waste glass melter.” Annals of Nuclear Energy, 113, pp. 380-392.

Guillen, D. P., Abboud, A. W., Pokorny, R., Eaton, W. C., Dixon, D., Fox, K., & Kruger, A. A. (2018). “Development of a Validation Approach for an Integrated Waste Glass Melter Model.” Nuclear Technology, 203, pp. 244-260.

Bhattarai, B.P., Gentle, J.P., McJunkin, T., Hill, P.J., Myers, K.S., Abboud, A.W., Renwick, R. and Hengst, D. (2018). “Improvement of Transmission Line Ampacity Utilization by Weather-Based Dynamic Line Rating.” IEEE Transactions on Power Delivery, 33(4), pp. 1853-1863.


"Large-Eddy Simulation of a Coaxial Jet with a Synthetic Turbulent Inlet." Abboud, A. W. and Smith, S. T. International Journal of Heat and Fluid Flow 50, (2014). 240-253.


"A Numerical Comparison of Precipitating Turbulent Flows between Large-Eddy Simulation and One-Dimensional Turbulence." Abboud, A.W., Schroeder, B., Saad, T., Smith, S.T., Harris, D.D. and Lignell, D.O. AIChE Journal, (2015). doi: 10.1002/aic.14870.


"A Class of Exact Solutions for Population Balances with Arbitrary Internal Coordinates." Saad, T., Abboud, A. W., Smith, S. T. and Ring, T. A. AIChE Journal, (2015). doi: 10.1002/aic.14739.


Conference Papers
Guillen, D.P., Abboud, A.W. and Pokorny, R. “Computational Experiments to Characterize Bubble Formation and Movement in Waste Glass Foam Layer.” Nuclear Reactor Thermal Hydraulics. August 18-23, 2019, Portland, OR.

Abboud A.W. and Huang, H., “Reactive CFD of Dry Storage of Unsealed Canisters of Aluminum Clad SNF” Waste Management Symposium 2019. March 3-7, 2018, Phoenix, AZ.

Abboud, A.W., Guillen, D.P., and Pokorny, R. “Effect of Glass Viscosity on Foaming Behavior and Heat Transfer in a Laboratory-Scale Waste Glass Melter.” Advances in Thermal Hydraulics, Nov. 11-15, 2018, Orlando FL.

Abboud, A.W., Gentle, J.P., McJunkin, T.R, Lehmer, J.P., Ferhinger, B.A. “Using Computational Fluid Dynamics to Assess Dynamic Line Ratings in Southern Idaho.” CIGRE Grid of the Future 2018, Oct. 28-31, 2018, Reston VA.

A. Abboud and D. Guillen, "Computational Fluid Dynamics Modeling of Bubbling in a Viscous Fluid for Validation of Waste Glass Melter Modeling," Advances in Thermal Hydraulics 2016, New Orleans, LA, June 12-16, (2016).

A. Abboud, D. Guillen and R. Pokorny, "Heat Transfer Model of a Small-Scale Waste Glass Melter with Cold Cap Layer," 11th International Meeting on Nuclear Thermal Hydraulics, Operation and Safety, Gyeongju, Korea, October 9-13, (2016).


​"Large Eddy Simulation of a Precipitate Flow with QMOM." Abboud, A., Saad, T., Thornock, J., Smith, S. AIChE Annual Meeting (2013), San Francisco, CA.

"Modeling Precipitation Reactions in Turbulent Flow with QMOM Incorporated Into LES." Abboud, A., Saad, T., Thornock, J., Smith, S. AIChE Annual Meeting (2012), Pittsburgh, PA.

"Population Balance Modeling with QMOM in Large Eddy Simulation for Calcium Carbonate Precipitation." Abboud, A. Saad, T., Ring, T., Smith, S. AIChE Annual Meeting (2011), Minneapolis, MN.

Research Interests:

​Multiphase flow modeling, specifically in particle modeling with applications of aqueous precipitation and coal combustion

Analysis, validation and development of CFD simulations

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