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Proceedings Papers

Effect of Microfiber Length on Microfiber Motion in Human Nasal Airways

J. Li, J. Ma, J. Y. Tu, L. Tian, G. Ahmadi
Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T04A011, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87037
https://doi.org/10.1115/FEDSM2022-87037
View Paper titled, Effect of Microfiber Length on Microfiber Motion in Human Nasal Airways
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Topics: Polyester fibers, Accounting, Air flow, Carbon nanofibers, Carbon nanotubes, Cavities, Drag (Fluid dynamics), Engineering simulation, Flow (Dynamics), Laminar flow
Proceedings Papers

Numerical Analysis of Elbow Erosion Mitigation Using Swirl Pipes in Gas-Particle Two-Phase Flows

A. Farokhipour, Z. Mansoori, M. Saffar-Avval, G. Ahmadi
Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T08A007, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-66013
https://doi.org/10.1115/FEDSM2021-66013
View Paper titled, Numerical Analysis of Elbow Erosion Mitigation Using Swirl Pipes in Gas-Particle Two-Phase Flows
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Topics: Computational fluid dynamics, Erosion, Numerical analysis, Particulate matter, Pipes, Sands, Swirling flow, Two-phase flow
Proceedings Papers

Detailed Analysis of Fiber Motion in Human Nasal Airways

Jiang Li, J. W. Ma, J. Y. Tu, L. Tian, G. Ahmadi
Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T08A015, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-65576
https://doi.org/10.1115/FEDSM2021-65576
View Paper titled, Detailed Analysis of Fiber Motion in Human Nasal Airways
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Topics: Fibers, Particulate matter, Cavities, Air flow, Simulation results, Aerosols, Drag (Fluid dynamics), Engineering simulation, Equations of motion, Geometry
Proceedings Papers

CFD Evaluation of Bend Angle Effects on Sand Particle Erosion in Multiphase Flows

A. Farokhipour, Z. Mansoori, M. Saffar-Avval, S. A. Shirazi, G. Ahmadi
Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T04A009, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20069
https://doi.org/10.1115/FEDSM2020-20069
View Paper titled, CFD Evaluation of Bend Angle Effects on Sand Particle Erosion in Multiphase Flows
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Topics: Computational fluid dynamics, Erosion, Multiphase flow, Particulate matter, Sands, Flow (Dynamics), Damage, Film thickness, Fluids, Liquid films
Proceedings Papers

Brownian Diffusion of Nano-Fibers: Application to Mobility Characterizations

L. Tian, G. Ahmadi, J. Y. Tu
Proc. ASME. AJKFluids2019, Volume 5: Multiphase Flow, V005T05A049, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4652
https://doi.org/10.1115/AJKFluids2019-4652
View Paper titled, Brownian Diffusion of Nano-Fibers: Application to Mobility Characterizations
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Topics: Diffusion (Physics), Mechanical admittance, Nanofibers, Particulate matter, Rotation, Collisions (Physics), Knudsen number, Nanoparticles, Anisotropy, Approximation
Proceedings Papers

A Numerical Study of Sand Particle Erosion in a Series of Ball Seats in Gas-Particle Two-Phase Flow

A. Rasteh, A. Farokhipour, M. A. Rasoulian, Z. Mansoori, M. Saffar-Avval, G. Ahmadi, A. A. Mofakham
Proc. ASME. AJKFluids2019, Volume 5: Multiphase Flow, V005T05A054, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5497
https://doi.org/10.1115/AJKFluids2019-5497
View Paper titled, A Numerical Study of Sand Particle Erosion in a Series of Ball Seats in Gas-Particle Two-Phase Flow
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Topics: Erosion, Particulate matter, Sands, Two-phase flow
Proceedings Papers

A Numerical Study of Sand Particle Erosion in Elbow and a Series of Plugged Tees in Gas-Particle Two-Phase Flow

A. Farokhipour, Z. Mansoori, M. Saffar-Avval, M. A. Rasoulian, A. Rasteh, S. A. Shirazi, G. Ahmadi
Proc. ASME. FEDSM2018, Volume 2: Development and Applications in Computational Fluid Dynamics; Industrial and Environmental Applications of Fluid Mechanics; Fluid Measurement and Instrumentation; Cavitation and Phase Change, V002T11A003, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2018-83122
https://doi.org/10.1115/FEDSM2018-83122
View Paper titled, A Numerical Study of Sand Particle Erosion in Elbow and a Series of Plugged Tees in Gas-Particle Two-Phase Flow
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Topics: Erosion, Particulate matter, Sands, Two-phase flow, Flow (Dynamics), Pipes, Algorithms, Computational fluid dynamics, Failure, Natural gas distribution
Proceedings Papers

Hybrid LES/RANS Model for Simulation of Particle Dispersion and Deposition

H. Sajjadi, M. Salmanzadeh, G. Ahmadi, S. Jafari
Proc. ASME. FEDSM2018, Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics, V003T19A007, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2018-83383
https://doi.org/10.1115/FEDSM2018-83383
View Paper titled, Hybrid LES/RANS Model for Simulation of Particle Dispersion and Deposition
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Topics: Particulate matter, Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence, Excitation, Lattice Boltzmann methods, Nanoparticles, Simulation results
Proceedings Papers

On Non-Spherical Nanoparticle Dynamics in Turbulent Flows

L. Tian, G. Ahmadi
Proc. ASME. FEDSM2018, Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics, V003T19A004, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2018-83356
https://doi.org/10.1115/FEDSM2018-83356
View Paper titled, On Non-Spherical Nanoparticle Dynamics in Turbulent Flows
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Topics: Dynamics (Mechanics), Nanoparticles, Turbulence, Particulate matter, Rotation, Diffusion (Physics), Ducts, Fluids, Mean free path, Microparticles
Proceedings Papers

Numerical Study of Heat Transfer in Turbulent Cross-Flow Over Porous-Coated Cylinder

N. Rahmati, Z. Mansoori, M. Saffar-Avval, G. Ahmadi
Proc. ASME. FEDSM2017, Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery, V01AT04A014, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69582
https://doi.org/10.1115/FEDSM2017-69582
View Paper titled, Numerical Study of Heat Transfer in Turbulent Cross-Flow Over Porous-Coated Cylinder
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Topics: Cross-flow, Cylinders, Heat transfer, Turbulence, Metal foams, Flow (Dynamics), Porosity, Porous materials, Algorithms, Eddies (Fluid dynamics)
Proceedings Papers

Multi-Scale Transport Modeling: Asbestos and Nano Fibers in Inhalation Risk Assessments

L. Tian, G. Ahmadi, J. Y. Tu
Proc. ASME. FEDSM2017, Volume 1B, Symposia: Fluid Measurement and Instrumentation; Fluid Dynamics of Wind Energy; Renewable and Sustainable Energy Conversion; Energy and Process Engineering; Microfluidics and Nanofluidics; Development and Applications in Computational Fluid Dynamics; DNS/LES and Hybrid RANS/LES Methods, V01BT10A003, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69083
https://doi.org/10.1115/FEDSM2017-69083
View Paper titled, Multi-Scale Transport Modeling: Asbestos and Nano Fibers in Inhalation Risk Assessments
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Topics: Modeling, Nanofibers, Risk assessment, Particulate matter, Carbon nanotubes, Diffusion (Physics), Dynamics (Mechanics), Fibers, Fluids, Hazards
Proceedings Papers

Lattice Boltzmann Method Simulation of Turbulent Indoor Airflow Using Hybrid LES/RANS Model

H. Sajjadi, M. Salmanzadeh, G. Ahmadi, S. Jafari
Proc. ASME. FEDSM2017, Volume 1B, Symposia: Fluid Measurement and Instrumentation; Fluid Dynamics of Wind Energy; Renewable and Sustainable Energy Conversion; Energy and Process Engineering; Microfluidics and Nanofluidics; Development and Applications in Computational Fluid Dynamics; DNS/LES and Hybrid RANS/LES Methods, V01BT12A002, July 30–August 3, 2017
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2017-69120
https://doi.org/10.1115/FEDSM2017-69120
View Paper titled, Lattice Boltzmann Method Simulation of Turbulent Indoor Airflow Using Hybrid LES/RANS Model
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Topics: Air flow, Lattice Boltzmann methods, Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence, Flow (Dynamics), Simulation results
Proceedings Papers

Novel Active Control Strategy for LCO and Flutter Suppression by a Coordinated Use of Multiple Distributed Surface Actuators

M. Cassaro, A. Nágy, P. Marzocca, M. Battipede, G. Ahmadi
Proc. ASME. IMECE2014, Volume 1: Advances in Aerospace Technology, V001T01A049, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-36905
https://doi.org/10.1115/IMECE2014-36905
View Paper titled, Novel Active Control Strategy for LCO and Flutter Suppression by a Coordinated Use of Multiple Distributed Surface Actuators
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Topics: Actuators, Flutter (Aerodynamics), Chords (Trusses), Control systems, Design, Wings, Algorithms, Computational fluid dynamics, Engineering prototypes, Errors
Proceedings Papers

Indoor Airflow Simulation Using Lattice Boltzmann Method

H. Sajjadi, M. Salmanzadeh, G. Ahmadi
Proc. ASME. FEDSM2014, Volume 1A, Symposia: Advances in Fluids Engineering Education; Turbomachinery Flow Predictions and Optimization; Applications in CFD; Bio-Inspired Fluid Mechanics; Droplet-Surface Interactions; CFD Verification and Validation; Development and Applications of Immersed Boundary Methods; DNS, LES, and Hybrid RANS/LES Methods, V01AT03A015, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21618
https://doi.org/10.1115/FEDSM2014-21618
View Paper titled, Indoor Airflow Simulation Using Lattice Boltzmann Method
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Topics: Air flow, Lattice Boltzmann methods, Simulation, Reynolds-averaged Navier–Stokes equations, Turbulence, Air pollution, Computational methods, Computer simulation, Computation, Computational fluid dynamics
Proceedings Papers

Exposure Assessment Analysis of a Heated Breathing Manikin With Rotation in a Displacement Ventilated Room by Numerical Methods

S. A. Keshavarz, M. Salmanzadeh, G. Ahmadi
Proc. ASME. FEDSM2014, Volume 1A, Symposia: Advances in Fluids Engineering Education; Turbomachinery Flow Predictions and Optimization; Applications in CFD; Bio-Inspired Fluid Mechanics; Droplet-Surface Interactions; CFD Verification and Validation; Development and Applications of Immersed Boundary Methods; DNS, LES, and Hybrid RANS/LES Methods, V01AT03A016, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21620
https://doi.org/10.1115/FEDSM2014-21620
View Paper titled, Exposure Assessment Analysis of a Heated Breathing Manikin With Rotation in a Displacement Ventilated Room by Numerical Methods
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Topics: Displacement, Numerical analysis, Rotation, Air flow, Particulate matter, Plumes (Fluid dynamics), Computational fluid dynamics, Diseases, Simulation results, Ventilation
Proceedings Papers

High-Fidelity Modeling of a Backhoe Digging Operation Using an Explicit Multibody Dynamics Code With Integrated Discrete Particle Modeling Capability

Shahriar G. Ahmadi, Tamer M. Wasfy, Hatem M. Wasfy, Jeanne M. Peters
Proc. ASME. IDETC-CIE2013, Volume 7A: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V07AT10A031, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-12896
https://doi.org/10.1115/DETC2013-12896
View Paper titled, High-Fidelity Modeling of a Backhoe Digging Operation Using an Explicit Multibody Dynamics Code With Integrated Discrete Particle Modeling Capability
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Topics: Modeling, Multibody dynamics, Particulate matter, Algorithms, Friction, Wheels, Actuators, Automotive design, Construction equipment, Equations of motion
Proceedings Papers

Multibody Dynamics Modeling of Sand Flow From a Hopper and Sand Pile Angle of Repose

Tamer M. Wasfy, Shahriar G. Ahmadi, Hatem M. Wasfy, Jeanne M. Peters
Proc. ASME. IDETC-CIE2013, Volume 7A: 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V07AT10A047, August 4–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: DETC2013-12914
https://doi.org/10.1115/DETC2013-12914
View Paper titled, Multibody Dynamics Modeling of Sand Flow From a Hopper and Sand Pile Angle of Repose
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Topics: Angle of repose, Flow (Dynamics), Modeling, Multibody dynamics, Sands, Particulate matter, Friction, Algorithms, Engineering simulation, Equations of motion
Proceedings Papers

Optimal Preview Control of Structural Vibrations Under Earthquake Excitations

A. F. Shahrabi, G. Ahmadi
Proc. ASME. IMECE2011, Volume 7: Dynamic Systems and Control; Mechatronics and Intelligent Machines, Parts A and B, 849-855, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65429
https://doi.org/10.1115/IMECE2011-65429
View Paper titled, Optimal Preview Control of Structural Vibrations Under Earthquake Excitations
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Topics: Earthquakes, Excitation, Vibration, Control systems, Displacement, Sensors, Structures, Vibration control
Proceedings Papers

Computer Modeling of Time History of Velocity Field and Net Momentum Output of a Synthetic Jet Actuator

G. Ahmadi, A. F. Shahrabi
Proc. ASME. IMECE2011, Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 937-940, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65046
https://doi.org/10.1115/IMECE2011-65046
View Paper titled, Computer Modeling of Time History of Velocity Field and Net Momentum Output of a Synthetic Jet Actuator
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Topics: Actuators, Computer simulation, Momentum, Air flow, Airfoils, Ceramics, Flow (Dynamics), Boundary-value problems, Drag (Fluid dynamics), Engineering simulation
Proceedings Papers

Transport and Deposition of Elongated Particles in the Upper Airways

L. Tian, G. Ahmadi
Proc. ASME. IMECE2011, Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 571-574, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65062
https://doi.org/10.1115/IMECE2011-65062
View Paper titled, Transport and Deposition of Elongated Particles in the Upper Airways
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Topics: Particulate matter, Fibers, Lung, Physiology, Rotation