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Elia Merzari
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Proceedings Papers

LES of Twin High-Re Rectangular Jets for Benchmarking Model Order Reduction Methods

John Acierno, Elia Merzari, Victor Petrov, Annalisa Manera
Proc. ASME. ICONE31, Volume 11: Student Paper Competition, V011T15A080, August 4–8, 2024
Publisher: American Society of Mechanical Engineers
Paper No: ICONE31-136284
https://doi.org/10.1115/ICONE31-136284
View Paper titled, LES of Twin High-Re Rectangular Jets for Benchmarking Model Order Reduction Methods
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Topics: Jets, Flow (Dynamics), Time series, Turbulence, Cavities, Computer simulation, Coolants, Cooling systems, Density, Dynamics (Mechanics)
Proceedings Papers

Direct Numerical Simulation of Mixing Phenomena in the Upper Plenum of Advanced Reactors

Tri Nguyen, Elia Merzari, Victor Coppo Leite, Brian Jackson
Proc. ASME. FEDSM2024, Volume 2: Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC); Flow Visualization, V002T05A035, July 15–17, 2024
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2024-132524
https://doi.org/10.1115/FEDSM2024-132524
View Paper titled, Direct Numerical Simulation of Mixing Phenomena in the Upper Plenum of Advanced Reactors
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Topics: Computer simulation, Heat transfer, Databases, Engineering simulation, Flow (Dynamics), Fluid dynamics, Fluids, Helium, Jets, Modeling
Proceedings Papers

Temperature Field Reconstruction of Surfaces Heated Through Radiative Heat Transfer Using Convolutional Neural Networks

Luiz C. Aldeia Machado, Victor Coppo Leite, Elia Merzari, Lesley Wright, Lander Ibarra, Roberto Ponciroli, Pramatha Bhat, Yassin Hassan
Proc. ASME. HT2024, ASME 2024 Heat Transfer Summer Conference, V001T14A005, July 15–17, 2024
Publisher: American Society of Mechanical Engineers
Paper No: HT2024-130465
https://doi.org/10.1115/HT2024-130465
View Paper titled, Temperature Field Reconstruction of Surfaces Heated Through Radiative Heat Transfer Using Convolutional Neural Networks
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Topics: Convolutional neural networks, Radiative heat transfer, Temperature, Computer simulation, Metal surfaces, Nuclear reactors, Sensors, Teams, Temperature distribution, Vessels
Journal Articles

Energy Exascale Computational Fluid Dynamics Simulations With the Spectral Element Method

Elia Merzari, Victor Coppo Leite, Jun Fang, Dillon Shaver, Misun Min, Stefan Kerkemeier, Paul Fischer, Ananias Tomboulides
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2024, 146(4): 041105.
Paper No: FE-23-1343
https://doi.org/10.1115/1.4064659
Published Online: February 22, 2024
View Article titled, Energy Exascale Computational Fluid Dynamics Simulations With the Spectral Element Method
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Topics: Flow (Dynamics), Simulation, Engineering simulation, Turbulence, Modeling, Boundary layers, Large eddy simulation
Journal Articles

Large Eddy Simulation of Convective Heat Transfer in a Random Pebble Bed Using the Spectral Element Method

Tri Nguyen, David Reger, Dezhi Dai, Elia Merzari, Haomin Yuan, Brian Jackson, Giacomo Busco
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2023, 145(12): 121001.
Paper No: HT-22-1690
https://doi.org/10.1115/1.4062940
Published Online: August 11, 2023
View Article titled, Large Eddy Simulation of Convective Heat Transfer in a Random Pebble Bed Using the Spectral Element Method
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Topics: Fluids, Heat transfer, Porosity, Temperature, Wavelets, Simulation, Flow (Dynamics), Porous materials, Large eddy simulation, Convection
Proceedings Papers

Validation of Low and High-Fidelity Turbulence Models for Prediction of Turbulent Heat Transfer in Low Prandtl Number Flows Under Buoyant and Separated Flow Conditions

Mohammed El Mellouki, Shanti Bhushan, Chris Pilmaier, D. K. Walters, Michael Gorman, Brent Hollrah, Y. A. Hassan, Elia Merzari, Aleksandr Obabko, M. B. Dzodzo
Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T05A008, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-86863
https://doi.org/10.1115/FEDSM2022-86863
View Paper titled, Validation of Low and High-Fidelity Turbulence Models for Prediction of Turbulent Heat Transfer in Low Prandtl Number Flows Under Buoyant and Separated Flow Conditions
Open the PDF for Validation of Low and High-Fidelity Turbulence Models for Prediction of Turbulent Heat Transfer in Low Prandtl Number Flows Under Buoyant and Separated Flow Conditions in another window
Topics: Channel flow, Flow (Dynamics), Fuel rods, Pipes, Prandtl number, Turbulence, Turbulent heat transfer
Proceedings Papers

Large Eddy Simulation of Random Pebble Bed Using the Spectral Element Method

Tri Nguyen, Elia Merzari, Haomin Yuan, Dezhi Dai, Brian Jackson
Proc. ASME. HT2022, ASME 2022 Heat Transfer Summer Conference, V001T20A009, July 11–13, 2022
Publisher: American Society of Mechanical Engineers
Paper No: HT2022-87117
https://doi.org/10.1115/HT2022-87117
View Paper titled, Large Eddy Simulation of Random Pebble Bed Using the Spectral Element Method
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Topics: Large eddy simulation, Heat transfer, Flow (Dynamics), Power density, Accidents, Computational fluid dynamics, Computer simulation, Convection, Coolants, Cooling
Proceedings Papers

Study on Laminar Turbulent Transition in Square Arrayed Rod Bundles

Carolina S. B. Dutra, Elia Merzari
Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A081, August 4–6, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICONE28-65706
https://doi.org/10.1115/ICONE28-65706
View Paper titled, Study on Laminar Turbulent Transition in Square Arrayed Rod Bundles
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Topics: Fuel rods, Turbulence
Proceedings Papers

Comparison of Pebble Bed Velocity Profiles Between High-Fidelity and Intermediate-Fidelity Codes

David Reger, Elia Merzari, Paolo Balestra, Sebastian Schunert, Yassin A. Hassan
Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A086, August 4–6, 2021
Publisher: American Society of Mechanical Engineers
Paper No: ICONE28-65759
https://doi.org/10.1115/ICONE28-65759
View Paper titled, Comparison of Pebble Bed Velocity Profiles Between High-Fidelity and Intermediate-Fidelity Codes
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Topics: Accidents, Computational fluid dynamics, Cooling, Drag (Fluid dynamics), Flow (Dynamics), Fluids, Graphics processing units, High temperature, Modeling, Porosity
Journal Articles

Turbulent Channel Flow With Spatially Dependent Viscosity: A Numerical Study

Victor Coppo Leite, Elia Merzari
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2022, 144(1): 011303.
Paper No: FE-21-1074
https://doi.org/10.1115/1.4052416
Published Online: October 6, 2021
View Article titled, Turbulent Channel Flow With Spatially Dependent Viscosity: A Numerical Study
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Topics: Delays, Flow (Dynamics), Friction, Reynolds number, Turbulence, Viscosity, Channel flow
Proceedings Papers

A New RANS Correction to Account for Varying Viscosity Effects

Victor Coppo Leite, Elia Merzari
Proc. ASME. FEDSM2021, Volume 1: Aerospace Engineering Division Joint Track; Computational Fluid Dynamics, V001T02A025, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-65823
https://doi.org/10.1115/FEDSM2021-65823
View Paper titled, A New RANS Correction to Account for Varying Viscosity Effects
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Topics: Reynolds-averaged Navier–Stokes equations, Viscosity, Turbulence, Computer simulation, Reynolds number, Channel flow, Combustion chambers, Delays, Design, Engineering systems and industry applications
Journal Articles

On the Impact of Aspect Ratio and Other Geometric Effects on the Stability of Rectangular Thermosiphons

Tri Nguyen, Elia Merzari
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. July 2021, 143(7): 072601.
Paper No: HT-20-1751
https://doi.org/10.1115/1.4051055
Published Online: May 28, 2021
View Article titled, On the Impact of Aspect Ratio and Other Geometric Effects on the Stability of Rectangular Thermosiphons
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Topics: Flow (Dynamics), Oscillations, Stability, Simulation
Proceedings Papers

Computational Fluid Dynamics Simulation of a Single-Phase Rectangular Thermosiphon

Tri Nguyen, Elia Merzari
Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T12A052, August 4–5, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICONE2020-16934
https://doi.org/10.1115/ICONE2020-16934
View Paper titled, Computational Fluid Dynamics Simulation of a Single-Phase Rectangular Thermosiphon
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Topics: Computational fluid dynamics, Simulation
Proceedings Papers

Direct Numerical Simulation of Fluid Flow in a 5x5 Square Rod Bundle Using Nek5000

Adam Kraus, Elia Merzari, Thomas Norddine, Oana Marin, Sofiane Benhamadouche
Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T12A036, August 4–5, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICONE2020-16643
https://doi.org/10.1115/ICONE2020-16643
View Paper titled, Direct Numerical Simulation of Fluid Flow in a 5x5 Square Rod Bundle Using Nek5000
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Topics: Computer simulation, Fluid dynamics, Fuel rods, Kinetic energy, Turbulence
Proceedings Papers

The Effect of Varying Viscosity in Turbulent Channel Flow

Victor Coppo Leite, Elia Merzari
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A019, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20228
https://doi.org/10.1115/FEDSM2020-20228
View Paper titled, The Effect of Varying Viscosity in Turbulent Channel Flow
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Topics: Channel flow, Turbulence, Viscosity, Reynolds number, Flow (Dynamics), Computational fluid dynamics, Computer simulation, Friction, Transients (Dynamics), Delays
Proceedings Papers

Modeling the Effect of Spacer Grid and Mixing Vanes in Coupled CFD Simulations of Small Modular Reactors

Jun Fang, Dillon Shaver, Elia Merzari
Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A028, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20370
https://doi.org/10.1115/FEDSM2020-20370
View Paper titled, Modeling the Effect of Spacer Grid and Mixing Vanes in Coupled CFD Simulations of Small Modular Reactors
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Topics: Computational fluid dynamics, Modeling, Momentum, Simulation, Small modular reactors
Journal Articles

Direct Numerical Simulation of the Flow Through a Randomly Packed Pebble Bed

Mustafa Alper Yildiz, Gerrit Botha, Haomin Yuan, Elia Merzari, Richard C. Kurwitz, Yassin A. Hassan
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2020, 142(4): 041405.
Paper No: FE-19-1553
https://doi.org/10.1115/1.4045439
Published Online: January 24, 2020
View Article titled, Direct Numerical Simulation of the Flow Through a Randomly Packed Pebble Bed
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Topics: Anisotropy, Flow (Dynamics), Porosity, Stress, Turbulence, Reynolds number, Computer simulation, Statistics, Pressure drop
Proceedings Papers

Validation and Development of DNS Database for Low Prandtl Numbers in Rod Bundle

Jonathan K. Lai, Elia Merzari, Yassin A. Hassan, Aleksandr Obabko
Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A057, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5036
https://doi.org/10.1115/AJKFluids2019-5036
View Paper titled, Validation and Development of DNS Database for Low Prandtl Numbers in Rod Bundle
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Topics: Databases, Fuel rods, Heat transfer, Flow (Dynamics), Liquid metals, Prandtl number, Thermal diffusivity, Channel flow, Computer simulation, Fluids
Journal Articles

Direct Numerical Simulation of the Flow in a Bare Rod Bundle at Different Prandtl Numbers

Jonathan K. Lai, Giacomo Busco, Elia Merzari, Yassin A. Hassan
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2019, 141(12): 121702.
Paper No: HT-19-1180
https://doi.org/10.1115/1.4044832
Published Online: October 8, 2019
View Article titled, Direct Numerical Simulation of the Flow in a Bare Rod Bundle at Different Prandtl Numbers
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Topics: Flow (Dynamics), Fuel rods, Prandtl number, Temperature, Turbulence, Simulation, Fluctuations (Physics), Kinetic energy, Reynolds number, Heat transfer
Journal Articles

Calculation of Friction Factors and Nusselt Numbers for Twisted Elliptical Tube Heat Exchangers Using Nek5000

Dillon R. Shaver, Lane B. Carasik, Elia Merzari, Nate Salpeter, Edward Blandford
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. July 2019, 141(7): 071205.
Paper No: FE-18-1691
https://doi.org/10.1115/1.4042889
Published Online: April 4, 2019
View Article titled, Calculation of Friction Factors and Nusselt Numbers for Twisted Elliptical Tube Heat Exchangers Using Nek5000
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Topics: Flow (Dynamics), Friction, Heat exchangers, Simulation, Turbulence, Heat transfer, Computational fluid dynamics, Reynolds number