Dean, Wallace H. Coulter School of Engineering
Clarkson Distinguished Professor
Robert R. Hill '48 Professor of
Mechanical and Aeronautical Engineering
PO Box 5725
Potsdam, NY 13699-5725
Research Site: http://web2.clarkson.edu/projects/fluidflow/
Dr. Ahmadi was the recipient of the "Clarkson University Distinguished Teaching Award" in 1988, and the "Pi Tau Sigma Distinguished Teaching Award" in 1984, 1986, 1988 and 1990. He also received the "University Outstanding Advisor Award" in 1986, 1988 and 2002. Courses taught include:
ME326 - Intermediate Fluid Mechanics
ME437 - Particle Transport, Deposition and Removal I
ME529 - Stochastic Processes in Engineering
ME537 - Fluid Mechanics of Aerosols
ME637 - Particle Transport, Deposition and Removal II
ME639 - Advanced Turbulence
Dr. Ahmadi is currently working on EPA, DOE and NASA-funded projects for developing a new technique for modeling pollutant transport, dispersion and turbulent flows of dense and dilute, solid-gas or liquid mixtures with application to coal transport and processing, spray formation, and hot-gas filtration. Other projects are to analyze aerosol particles transport, deposition and removal in turbulent flows with application to micro-contamination control in microelectronic, xerographic and glass industries. These research projects were funded by IBM, Xerox, Corning, NASA and New York State Science and Technology Foundation (CAMP). Dr. Ahmadi has also been involved in developing schemes for active and passive vibration control of space structures during the lift off and in orbit. These research activities were funded by NSF and NASA. A related project is the base isolation of buildings in seismic regions for their protection against earthquakes.
Professor Ahmadi has authored more than 400 papers in journals, in addition to two books and numerous papers in national and international conference proceedings. He has also given more than 100 keynote lectures and invited seminars worldwide. He is on the editorial advisory board of seven technical journals and is a fellow of ASME, ISME and ISCE. He was also a Senior Research Associate at National Energy Technology Laboratory (NETL). More information can be found on his research Web site.
Specific Topics of Interest
- Multiphase flows
- Indoor air pollution
- Outdoor air pollution
- Lung/nose deposition
- Turbulence modeling
- Aerosol transport and deposition
- Electro-hydrodynamic flows
- Particle and fiber adhesion and removal
- Chemical-Mechanical Polishing
- Surface cleaning
- Gas filtration
- Nanoparticle transport
- CO2 sequestration
- Natural gas production form hydrate dissociation
- Three phase slurry reactors
- Micro-contamination control
- Vibration isolation
- Vibration control of space structures
- Base isolation of buildings
F. Behzad, Z. Mansoori, M. Saffar-Avval, H. Basirat Tabrizi and G. Ahmadi, "Thermal Stochastic Collision Model in Turbulent Gas-Solid Pipe Flows," International Journal of Heat and Mass Transfer, Vol. 53 pp. 1175-1182 (2010).
S. Azizi, S.H. Hosseini, G. Ahmadi and M. Moraveji, "Numerical Simulation of Particles Segregation in Bubbling Gas-Fluidized Beds," Chemical Engineering & Technology, Vol. 33, pp. 421-432 (2010).
D. Crandall, G. Ahmadi and D.H. Smith, "Computational Modeling of Fluid Flow through a Fracture in Permeable Rock," Transport in Porous Media, Vol. 85, pp. 493-510 (2010).
S. Jafari, M. Salmanzadeh, M. Rahnama and G. Ahmadi, "Investigation of Particle Dispersion and Deposition in a Channel with a Square Cylinder Obstruction Using the Lattice Boltzmann Method," Journal of Aerosol Science, Vol. 41, pp.198-206 (2010).
S.H. Hosseini, G. Ahmadi, R. Rahimi, M. Zivdar and M. Nasr Esfahany, "CFD Studies of Solid Hold-up Distribution and Circulation Pattern in Gas-Solid Fluidized Beds," Powder Technology, Vol. 200, 201-215 (2010).
M. Jalaal, E. Esmaeilzadeh and G. Ahmadi, "Numerical Investigation on Effect of Tip Angle on Settling of a Conical Shape Particle," Journal of Numerical Simulations, Vol. 2, 63-77 (2010).
A. Moshfegh, M. Shams, G. Ahmadi and R. Ebrahimi, "A New Expression for Spherical Aerosol Drag in Slip Flow Regime," J. Aerosol Science, Vol. 31, pp. 384-400 (2010).
M. Hamzehei, H. Rahimzadeh and G. Ahmadi, "Computational and Experimental Study of Heat Transfer and Hydrodynamics in a 2D Gas-Solid Fluidized Bed Reactor," Industrial Engineering and Chemical Research, Vol. 49, pp. 5110-5121 (2010).
R. Rafee, H. Rahimzadeh and G. Ahmadi, "Numerical Simulations of Airflow and Droplet Transport in a Wave-plate Mist Eliminator," Chemical Engineering Research and Design, Vol. , pp. (2010).
M. Jalaal, D.D. Ganji and G. Ahmadi, "Analytical Investigation on Acceleration Motion of a Vertically Falling Spherical Particle in Incompressible Newtonian Media," Advanced Powder Technology, Vol. 21, pp. 298-304 (2010).
M. Hamzehei, H. Rahimzadeh and G. Ahmadi, "Studies of Gas Velocity and Particles Size Effects on Fluidized Bed Hydrodynamics with CFD Modeling and Experimental Investigation," Journal of Mechanics, Vol. 26, pp. 267-278 (2010).
J. Marzbanrad and G. Ahmadi, "Hybrid Preview Control of Structures under Earthquake Excitations," Asian J. Civil Engineering, Vol. 10, pp. 57-78 (2009).
D. Crandall, G. Ahmadi, M. Ferer and D.H. Smith, "Distribution and Occurrence of Localized-Bursts in Two-Phase Flow through Porous Media," Physica A, Vol. 388, pp. 574-584 (2009).
K. Inthavong, J. Tu and G. Ahmadi, "Computational Modelling of Gas-Particle Flows with Different Particle Morphology in the Human Nasal Cavity," J. Computational Multiphase Flows, Vol. 1, pp. 57-82 (2009).
O. Abouali, A. Nikbakht, G. Ahmadi and S. Saadabadi, "Three-Dimensional Simulation of Brownian Motion of Nano-Particles in Aerodynamic Lenses," Aerosol Science and Technology, Vol. 43, pp. 205-215 (2009).
A. Razmi, B. Firoozabadi and G. Ahmadi, "Experimental and Numerical Approach to Enlargement of Performance of Primary Settling Tanks," Journal of Applied Fluid Mechanics, Vol. 2, pp. 1-12 (2009).
A. Moshfegh, M. Shams, G. Ahmadi and R. Ebrahimi, "A Novel Surface-Slip Correction for Microparticles Motion," Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 345, pp. 112-120 (2009).
V. Esfahanian, H. Mahmoodi Darian, H. Babazadeh, M. Aghvami, R. Pasandeh, F. Torabi and G. Ahmadi, "Numerical Simulation of Electrolyte Particles Trajectory to Investigate Battery Cover Design Characteristics," Journal of Power Sources, Vol. 191. pp. 139-143 (2009).
H. Nasr, G. Ahmadi and J.B. McLaughlin, "A DNS Study of Effects of Particle-Particle Collisions and Two-Way Coupling on Particle Deposition and Phasic Fluctuations," Journal of Fluid Mechanics, Vol. 640, pp. 507-536 (2009).
B. Asadi, M.H. Saidi, M. Taeibi-Rahni and G. Ahmadi, "Computational Simulation of Hydrodynamic Convection in Rising Bubble under Microgravity Condition," International Journal of Engineering, Transactions A: Basics, Vol. 22, pp. 295-305 (2009).
H. Afshar, M. Shams, S.M.M. Nainian and G. Ahmadi, "Microchannel Heat Transfer and Dispersion of Nanoparticles in Slip Flow Regime with Constant Heat Flux," International Communications in Heat and Mass Transfer, Vol. 36, pp. 1060-1066 (2009).
M.H. Saidi, M. Taeibi-Rahni B. Asadi and G. Ahmadi, "Computational Simulation of Marangoni Convection under Microgravity Condition," Scientia Iranica, Transcation B: Mechanical Engineering Vol 16, 513-524 (2009).
D. Crandall, G. Ahmadi and D.H. Smith, "Comparison of Experimental and Numerical Two-Phase Flows in a Porous Micro-Model," J. Computational Multiphase Flows, Vol. 1, pp. 325-340 (2009).
B. Mousavi Belfeh-Teymouri and G. Ahmadi, "Identification of the Near Wall Collapsing Bubble Jet Using and opposite Secondary Wall," Journal of Fluid Science and Technology, Vol. 3, pp. 207-218 (2008).
A. Tamayol, F. Firoozabadi and G. Ahmadi, "Effects of Inlet Position and Baffle Configuration on Hydraulic Performance of Primary Settling Tanks," ASCE Journal of Hydrology, Vol. 134, pp. 1004-1009 (2008).
A. Tamayol, F. Firoozabadi and G. Ahmadi, "Determination of Settling Tank Performance using and Eulerian-Lagrangian Method," Journal of Applied Fluid Mechanics, Vol. 1, pp. 43-54 (2008).
A.R. Mazaheri, G. Ahmadi and I. Gamwo, "Temperature Distribution in a Demonstration-Scale Filter Vessel With and Without Ash Bridging," Advanced Powder Technology, Vol. 19, pp. 101‑117 (2008).
X. Zhang, G. Ahmadi, J. Qian and A. Ferro, "Particle Resuspension and Transport due to Human Walking in Indoor Environments," Journal of Adhesion Science and Technology, Vol. 22, pp. 591-621 (2008).
D. Crandall, G. Ahmadi, D. Leonard, M. Ferer and D.H. Smith, "A New Stereolithography Experimental Porous Flow Device," Review of Scientific Instrumentation, Vol. 79, pp. 044501-1-6 (2008).
A. Alavinasab, R. Jha, G. Ahmadi, C. Cetinkaya and I. Sokolov, "Computational Modeling of Nano-Structured Glass Fibers," Computational Materials Science, Vol. 44, 622-627 (2008).
M.R. Sahebnasagh, V. Esfahanian, S. Gitipour, G. Ahmadi and K. Ashrafi, "Simulation of Plume Patterns Associated with Different Atmospheric Temperature Profiles," Asian Journal of Chemistry, Vol. 20, pp. 6551-6564 (2008).
A.Nasrollahi, S.A.A. Salehi Neyshabouri, G. Ahmadi and M.M. Namin, "Numerical Simulation of Particle Saltation Process," Particulate Science and Technology, Vol. 26, pp. 529-550 (2008)
M. Rostami, A. Ardeshir, G. Ahmadi and P.G. Thomas, "On the Effect of Gravitational and Hydrodynamic Forces on Particle Motion in a Quiescent Fluid at High Particle Reynolds Numbers," Canadian Journal of Physics, Vol. 86, pp. 791-799 (2008).