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Proceedings Papers

Numerical Simulations of Phase Change in Microgravity

Damir Juric, Grétar Tryggvason
Proc. ASME. IMECE96, Heat Transfer: Volume 1 — Heat Transfer in Microgravity Systems; Radiative Heat Transfer and Radiative Heat Transfer in Low-Temperature Environments; Thermal Contact Conductance and Inverse Problems in Heat Transfer, 33-44, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0026
https://doi.org/10.1115/IMECE1996-0026
View Paper titled, Numerical Simulations of Phase Change in Microgravity
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Topics: Computer simulation, Evaporation, Solidification, Superheating, Vapors, Alloys, Boiling, Deformation, Drops, Engineering simulation
Proceedings Papers

Thermal Migration of Bubbles in Zero Gravity

Asghar Esmaeeli, Grétar Tryggvason, Vedat Arpaci
Proc. ASME. IMECE96, Heat Transfer: Volume 1 — Heat Transfer in Microgravity Systems; Radiative Heat Transfer and Radiative Heat Transfer in Low-Temperature Environments; Thermal Contact Conductance and Inverse Problems in Heat Transfer, 55-63, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0028
https://doi.org/10.1115/IMECE1996-0028
View Paper titled, Thermal Migration of Bubbles in Zero Gravity
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Topics: Bubbles, Gravity (Force), Fluids, Finite difference methods, Navier-Stokes equations, Temperature, Temperature gradient, Thermal energy
Journal Articles

Numerical Studies of Bubbles in Swirling Channel Flows

Wen Liu, Jiacai Lu, Gretar Tryggvason
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2023, 145(4): 041401.
Paper No: FE-22-1403
https://doi.org/10.1115/1.4056615
Published Online: January 25, 2023
View Article titled, Numerical Studies of Bubbles in Swirling Channel Flows
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Topics: Bubbles, Fluids, Swirling flow, Flow (Dynamics)
Journal Articles

Power Generation Using Kites in a GroundGen Airborne Wind Energy System: A Numerical Study

Alireza Mahdavi Nejad, Gretar Tryggvason
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. June 2020, 142(6): 061306.
Paper No: JERT-19-1775
https://doi.org/10.1115/1.4045700
Published Online: December 26, 2019
View Article titled, Power Generation Using Kites in a GroundGen Airborne Wind Energy System: A Numerical Study
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Topics: Cycles, Energy generation, Flow (Dynamics), Wind energy, Wind energy systems, Aerodynamics, Fluid-dynamic forces, Springs, Cable reels, Computer simulation
eBook Chapter

Direct Numerical Simulations of Gas-Liquid Flows

Series: ASME Press Select Proceedings
Publisher: ASME Press
Published: 2018
ISBN: 9780791861851
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Topics: Computer simulation, Flow (Dynamics)
Proceedings Papers

Computational Investigation of Full-Scale Tethered Underwater Kite

Amirmahdi Ghasemi, David J. Olinger, Gretar Tryggvason
Proc. ASME. POWER2018, Volume 1: Fuels, Combustion, and Material Handling; Combustion Turbines Combined Cycles; Boilers and Heat Recovery Steam Generators; Virtual Plant and Cyber-Physical Systems; Plant Development and Construction; Renewable Energy Systems, V001T06A021, June 24–28, 2018
Publisher: American Society of Mechanical Engineers
Paper No: POWER2018-7397
https://doi.org/10.1115/POWER2018-7397
View Paper titled, Computational Investigation of Full-Scale Tethered Underwater Kite
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Topics: Boundary layers, Boundary-value problems, Cable reels, Computer simulation, Control equipment, Drag (Fluid dynamics), Energy generation, Flow (Dynamics), Fluid-dynamic forces, Generators
Proceedings Papers

Simulation of Tethered Underwater Kites Moving in Three Dimensions for Power Generation

Amirmahdi Ghasemi, David J. Olinger, Gretar Tryggvason
Proc. ASME. ES2017, ASME 2017 11th International Conference on Energy Sustainability, V001T07A003, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: ES2017-3425
https://doi.org/10.1115/ES2017-3425
View Paper titled, Simulation of Tethered Underwater Kites Moving in Three Dimensions for Power Generation
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Topics: Dimensions, Energy generation, Simulation, Cable reels, Flow (Dynamics), Computer simulation, Design, Wings, Airfoils, Buoys
Proceedings Papers

Simulation of Tethered Underwater Kites: Three Dimensional Trajectories for Power Generation

Amirmahdi Ghasemi, David J. Olinger, Gretar Tryggvason
Proc. ASME. POWER2016, ASME 2016 Power Conference, V001T08A002, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: POWER2016-59141
https://doi.org/10.1115/POWER2016-59141
View Paper titled, Simulation of Tethered Underwater Kites: Three Dimensional Trajectories for Power Generation
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Topics: Energy generation, Simulation, Cable reels, Computer simulation, Flow (Dynamics), Fluid-dynamic forces, Tension, Airfoils, Generators, Hooke's law
Journal Articles

A Nonlinear Computational Model of Tethered Underwater Kites for Power Generation

Amirmahdi Ghasemi, David J. Olinger, Gretar Tryggvason
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2016, 138(12): 121401.
Paper No: FE-15-1665
https://doi.org/10.1115/1.4034195
Published Online: September 12, 2016
View Article titled, A Nonlinear Computational Model of Tethered Underwater Kites for Power Generation
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Topics: Cable reels, Chords (Trusses), Energy generation, Ocean currents, Simulation, Weight (Mass), Flow (Dynamics), Navier-Stokes equations, Fluid-dynamic forces, Vorticity
Proceedings Papers

Computational Simulation of the Tethered Undersea Kites for Power Generation

Amirmahdi Ghasemi, David J. Olinger, Gretar Tryggvason
Proc. ASME. IMECE2015, Volume 6B: Energy, V06BT07A043, November 13–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2015-50809
https://doi.org/10.1115/IMECE2015-50809
View Paper titled, Computational Simulation of the Tethered Undersea Kites for Power Generation
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Topics: Energy generation, Simulation, Flow (Dynamics), Cable reels, Fluid-dynamic forces, Ocean currents, Turbines, Computer simulation, Dimensions, Generators
Proceedings Papers

Numerical Investigations of Drop Solidification by a Front-Tracking Method

Truong V. Vu, Gretar Tryggvason, Shunji Homma, John C. Wells, Hideyuki Takakura
Proc. ASME. FEDSM2014, Volume 1D, Symposia: Transport Phenomena in Mixing; Turbulent Flows; Urban Fluid Mechanics; Fluid Dynamic Behavior of Complex Particles; Analysis of Elementary Processes in Dispersed Multiphase Flows; Multiphase Flow With Heat/Mass Transfer in Process Technology; Fluid Mechanics of Aircraft and Rocket Emissions and Their Environmental Impacts; High Performance CFD Computation; Performance of Multiphase Flow Systems; Wind Energy; Uncertainty Quantification in Flow Measurements and Simulations, V01DT32A012, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21899
https://doi.org/10.1115/FEDSM2014-21899
View Paper titled, Numerical Investigations of Drop Solidification by a Front-Tracking Method
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Topics: Solidification, Density, Finite difference methods, Fluid dynamics, Junctions, Latent heat, Simulation, Surface tension, Temperature gradient
Proceedings Papers

The Transient Evolution of Bubbles in Turbulent Channel Flows

Gretar Tryggvason, Jiacai Lu
Proc. ASME. FEDSM2014, Volume 2, Fora: Cavitation and Multiphase Flow; Fluid Measurements and Instrumentation; Microfluidics; Multiphase Flows: Work in Progress; Fluid-Particle Interactions in Turbulence, V002T06A008, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21602
https://doi.org/10.1115/FEDSM2014-21602
View Paper titled, The Transient Evolution of Bubbles in Turbulent Channel Flows
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Topics: Bubbles, Channel flow, Transients (Dynamics), Turbulence, Flow (Dynamics), Simulation, Bubbly flow, Complex systems, Computer simulation, Dynamics (Mechanics)
Proceedings Papers

Numerical Modeling of Kites for Power Generation

Alireza Mahdavi Nejad, David J. Olinger, Gretar Tryggvason
Proc. ASME. FEDSM2014, Volume 1C, Symposia: Fundamental Issues and Perspectives in Fluid Mechanics; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Gas-Solid Flows: Dedicated to the Memory of Professor Clayton T. Crowe; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes, V01CT24A001, August 3–7, 2014
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2014-21168
https://doi.org/10.1115/FEDSM2014-21168
View Paper titled, Numerical Modeling of Kites for Power Generation
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Topics: Computer simulation, Energy generation, Flow (Dynamics), Shapes, Cable reels, Waves, Wind, Aerodynamics, Cycles, Fluid-dynamic forces
Proceedings Papers

Fully Resolved Numerical Simulations of Fused Deposition Modeling

Sadegh Dabiri, Steven Schmid, Gretar Tryggvason
Proc. ASME. MSEC2014, Volume 2: Processing, V002T02A045, June 9–13, 2014
Publisher: American Society of Mechanical Engineers
Paper No: MSEC2014-4107
https://doi.org/10.1115/MSEC2014-4107
View Paper titled, Fully Resolved Numerical Simulations of Fused Deposition Modeling
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Topics: Computer simulation, Modeling, Compacting, Computation, Cooling, Multiphase flow, Solidification, Trajectories (Physics)
Proceedings Papers

Turbulent Bubbly Channel Flow and its Effect on Heat Transfer

Sadegh Dabiri, Gretar Tryggvason
Proc. ASME. FEDSM2013, Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives, V01CT17A009, July 7–11, 2013
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2013-16217
https://doi.org/10.1115/FEDSM2013-16217
View Paper titled, Turbulent Bubbly Channel Flow and its Effect on Heat Transfer
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Topics: Channel flow, Heat transfer, Turbulence, Bubbles, Flow (Dynamics), Boilers, Bubbly flow, Computer simulation, Heat flux, Pipe flow
Proceedings Papers

Capturing Subgrid Physics in DNS of Multiphase Flows

Gretar Tryggvason, Bahman Aboulhasanzadeh
Proc. ASME. FEDSM2013, Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives, V01CT23A005, July 7–11, 2013
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2013-16315
https://doi.org/10.1115/FEDSM2013-16315
View Paper titled, Capturing Subgrid Physics in DNS of Multiphase Flows
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Topics: Multiphase flow, Physics, Boundary layers, Mass transfer, Flow (Dynamics), Bubbles, Momentum, Approximation, Computer simulation, Diffusion (Physics)
Proceedings Papers

Nonlinear Simulation of a Spar Buoy Floating Wind Turbine

Ali Nematbakhsh, David J. Olinger, Gretar Tryggvason
Proc. ASME. FEDSM2013, Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives, V01CT26A005, July 7–11, 2013
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2013-16494
https://doi.org/10.1115/FEDSM2013-16494
View Paper titled, Nonlinear Simulation of a Spar Buoy Floating Wind Turbine
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Topics: Buoys, Floating wind turbines, Simulation, Spar platforms, Wing spars, Navier-Stokes equations, Rotors, Stress, Surges, Tension
Journal Articles

A Nonlinear Computational Model of Floating Wind Turbines

Ali Nematbakhsh, David J. Olinger, Gretar Tryggvason
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2013, 135(12): 121103.
Paper No: FE-12-1605
https://doi.org/10.1115/1.4025074
Published Online: September 12, 2013
View Article titled, A Nonlinear Computational Model of Floating Wind Turbines
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Topics: Floating wind turbines, Rotors, Tension-leg platforms, Waves, Wind, Wind turbines, Flow (Dynamics), Surges
Proceedings Papers

A Nonlinear Computational Model for Floating Wind Turbines

Ali Nematbakhsh, David J. Olinger, Gretar Tryggvason
Proc. ASME. FEDSM2012, Volume 1: Symposia, Parts A and B, 1091-1100, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2012-72271
https://doi.org/10.1115/FEDSM2012-72271
View Paper titled, A Nonlinear Computational Model for Floating Wind Turbines
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Topics: Floating wind turbines, Tension-leg platforms, Rotors, Dynamic models, Engineering simulation, Navier-Stokes equations, Simulation, Thrust, Turbines, Waves
Proceedings Papers

DNS Studies of Turbulent Bubbly Flows in Vertical Channels

Gretar Tryggvason, Sadegh Dabiri, Jiacai Lu
Proc. ASME. FEDSM2012, Volume 2: Fora, 187-191, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2012-72111
https://doi.org/10.1115/FEDSM2012-72111
View Paper titled, DNS Studies of Turbulent Bubbly Flows in Vertical Channels
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Topics: Bubbly flow, Turbulence, Bubbles, Flow (Dynamics), Computer simulation, Lift (Fluid dynamics), Reynolds number