Current Projects

Carbon Dioxide Mineralization: Accelerating Deployment via Numerical Simulation

Carbon dioxide mineralization is the process of converting CO2 into carbonate (CO3) and then binding it to minerals such as calcium or magnesium to form calcium or magnesium carbonates (e.g. CaCO3, MgCO3). The resulting products represent geologically stable and environmentally benign minerals. Sequestration of CO2 via mineral carbonation stands among the most attractive options for handling carbon dioxide because it provides stable CO2 storage and could have several economic benefits.

This research effort aims at analyzing the precipitation in mineral carbonation reactors using high resolution turbulent flow simulations. By understanding the carbonation process, we hope to identify reaction pathways that accelerate the precipitation and provide a streamlined route to large scale implementation. The simulations are based on solving the population balance equation using the direct quadrature method of moments (DQMOM). These will be coupled with a large eddy simulation solver and a mixture fraction transport model.

Graph-Based CFD Software: Automated Algorithm Construction

The purpose of this project is to reduce CFD code complexity by implementing the directed acyclic graph (DAG) multiphysics model. The DAG multiphysics model aims at reducing code rigidity by shifting the programming focus from the algorithm to the data and its connectivity. This is accomplished by first decomposing a differential equation into basic expressions (e.g. convection, diffusion, etc...). Subsequently, these expressions are mapped as nodes in a directed acyclic graph that exposes the network of data requirements. In the last step, the graph is analyzed using graph theory to extract an optimum solution algorithm. At the outset, the programmer is only concerned with data flow and is not exposed to algorithm design concerns.

This project takes form in two complementary C++ libraries and a CFD software component that is used to interface these libraries with the Uintah computational framework. The Uintah computational framework a set of software components and libraries that facilitate the solution of partial differential equations on structured adaptive grids using hundreds to thousands of processors. It is developed at the University of Utah part of the Center for the Simulation of Accidental Fires and Explosions (C-SAFE).

Docs

Code

Mathematica

LaTeX

Div

Publications

Download my citations: BibTeX

Book Chapters

1. Majdalani, J., and Saad, T., "Internal Flows Driven by Wall-Normal Injection", Advanced Fluid Dynamics, Prof. Hyoung Woo Oh (Ed.), ISBN: 978-953-51-0270-0, InTech, 20012.

Journal Articles

1. Saad, T., and Majdalani, J., "Some Thoughts on the Pressure Integration Requirements of the Navier-Stokes Equations", Accepted for publication in Fluid Dynamics Research.
   
2. Crawford, D. T., Saad, T., and Ring T. A., "Verification and Validation of the Maximum Entropy Method for Reconstructing Neutron Flux, with MCNP5, Attila-7.1.0 and the GODIVA Experiment", Accepted for publication in Annals of Nuclear Energy.
3. Maicke, B., Saad, T., and Majdalani, J., "On the Compressible Hart-McClure and Sellars Mean Flow Motions", Physics of Fluids, vol. 24, No. 9, 2012. (DOI: 10.1063/1.4748349)
4. Saad, T., and Majdalani, J., "On the Lagrangian Optimization of Wall-Injected Flows: from the Hart-McClure Potential to the Taylor-Culick Rotational Motion," Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. (DOI: 10.1098/rspa.2009.0326)
5. Saad, T., and Majdalani, J., "Rotational Flowfields in Porous Channels with Arbitrary Headwall Injection," Journal of Propulsion and Power, vol. 25, No. 4, 2009, pp. 921 - 929. (DOI: 10.2514/1.41926)
6. Darwish, M., Saad, T., and Hamdan, Z., "Parallelization of an Additive Multigrid Solver," Numerical Heat Transfer, Part B: Fundamentals, Vol. 54, No. 2, 2008, pp. 157 - 184. (DOI: 10.1080/10407790802182638)
7. Sams, O. C., Majdalani, J., and Saad, T., "Mean Flow Approximations for Solid Rocket Motors with Tapered Bores," Journal of Propulsion and Power, Vol. 23, No. 2, 2007. (DOI: 10.2514/1.15831)
8.  Majdalani, J., and Saad, T., "The Taylor-Culick Profile With Arbitrary Headwall Injection," Physics of Fluids, Vol. 19, No. 9, 2007. (DOI: 10.1063/1.2746003)
9. Saad, T., Sams, O. C., and Majdalani, J., "Rotational Flow in Tapered Slab Rocket Motors," Physics of Fluids, Vol. 18, No. 1, 2006. (DOI: 10.1063/1.2354193)

Conference Papers

1.  Saad, T., Smith, S. T., Abboud, A., and Ring, T. A., On a Class of Analytical Solutions for the Population Balance Equation with Aggregation and Breakage, AIChE Annual Meeting, Minneapolis, Minnesota, USA, October 16 - 21, 2011.
2. Abboud, A. W., Smith, S. T., Saad, T., and Ring, T. A., A Study of Population Balance Modeling in a Large-Eddy Simulation with Carbonate Precipitation, AIChE Annual Meeting, Minneapolis, Minnesota, USA, October 16 - 21, 2011.
3. Saad, T., and Majdalani, J., Viscous Flow in Porous Pipes with Radially Regressing Walls, 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, San Diego, California, USA, July 31 – August 3, 2011.
4. Saad, T., and Majdalani, J., The Derivation and Solution of the Compressible Potential Equation in Orthogonal Coordinates, 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, San Diego, California, USA, July 31 – August 3, 2011.
5. Sutherland, J. C., and Saad, T., A Novel Computational Framework for Multiphysics and Reactive Flow Simulations, AIChE Annual Meeting, Minneapolis, Minnesota, USA, October 16 - 21, 2011.
6. Sutherland, J. C., and Saad, T., The Discrete Operator Approach to the Numerical Solution of Partial Differential Equations, 20th AIAA Computational Fluid Dynamics Conference, Honolulu, Hawaii, June 27 – 30, 2011.
7. Robinson, D., Punati, N., Saad, T., and Sutherland, J. C., A Novel Computational Framework for Multiphysics and Reactive Flow Simulations. 7th Combustion Institute US National Combustion Meeting, Atlanta, Georgia, USA, March 20 -- 23, 2011.
8. Saad, T., and Majdalani, J., Some Thoughts on Kelvin's Minimum Energy Theorem, International Conference on Advanced Research and Applications in Mechanical Engineering, Notre Dame University, Zouk Mosbeh, Lebanon, June 13 -- 15, 2011.
9. Maicke, B. A., Saad, T., and Majdalani, J., "On the Compressible Har-McClure Mean Flow Motion in Simulated Rocket Motors," 46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Nashville, TN, USA, July 25-28, 2010 (AIAA-2010-7077).
10. Saad, T., and Majdalani, J., "Extension of Kelvin's Minimum Energy Theorem to Flows with Open Regions," 40th AIAA Fluid Dynamics Conference and Exhibit, Chicago, Illinois, USA, June 28 - July 1, 2010 (AIAA-2010-4287).
11. Saad, T., and Majdalani, J., "Pressure Integration Rules and Restrictions for the Navier-Stokes Equations," 40th AIAA Fluid Dynamics Conference and Exhibit, Chicago, Illinois, USA, June 28 - July 1, 2010 (AIAA-2010-4288).
12. Saad, T., and Majdalani, J., "Energy Based Solutions of the Bidirectional Vortex with Multiple Mantles," 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Denver, Colorado, USA, August 2-5, 2009 (AIAA-2009-5305).
13. Saad, T., and Majdalani, J., "Energy Based Solutions of the Bidirectional Vortex," 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Hartford, Connecticut, USA, July 20 - 23, 2008.
14. Saad, T., and Majdalani, J., "Energy Based Mean Flow Solutions for Slab Hybrid Rocket Chambers," 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Hartford, Connecticut, USA, July 20-23, 2008.
15. Saad, T., and Majdalani, J., "The Taylor Profile in Porous Channels with Arbitrary Headwall Injection," 37th AIAA Fluid Dynamics Conference and Exhibit, Miami, Florida, USA, June 25-28, 2007.
16. Majdalani, J., and Saad, T., "Energy Steepened States of the Taylor-Culick Profile," AIAA Paper 2007-5797, July 2007. Nominated for Best Solid Rockets Paper by Robert Geisler.
17. Darwish, M.S., Saad, T., and Hamdan, Z., "A High Scalability Parallel Algebraic Multigrid Solver," ECCOMAS CFD Conference, Egmond Aan Zee, Netherlands, September 5-8, 2006.
18. Darwish, M.S., Saad, T., "A High Scalability Parallel Algebraic Multigrid Solver," 4th ICCFD Conference, Ghent, Belgium, July 10-14, 2006.
19. Saad, T., "Implementation and Performance Analysis of a Parallel Algebraic Multigrid Solver," 4th FEA Student Conference, American University of Beirut, Lebanon, May 26-27, 2005.

© 1999 - 2011 by Tony Saad
| Feedback |
best viewed in Chrome/Firefox/Safari/IE6.0
made with CSS - minimalist design by Tony Saad
Your are visiting from: 66.249.73.170, crawl-66-249-73-170.googlebot.com