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Proceedings Papers

Using Validation Metrics to Assess RANS Turbulence Models Performance at Full Scale Reynolds Numbers

Luis Eça, Maarten Kerkvliet, Serge L. Toxopeus
Proc. ASME. IMECE2023, Volume 9: Fluids Engineering, V009T10A066, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-113498
https://doi.org/10.1115/IMECE2023-113498
View Paper titled, Using Validation Metrics to Assess RANS Turbulence Models Performance at Full Scale Reynolds Numbers
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Topics: Reynolds number, Reynolds-averaged Navier–Stokes equations, Turbulence, Simulation, Errors, Modeling, Flow (Dynamics), Computational fluid dynamics, Uncertainty, Algebra
Journal Articles

Verification and Validation: The Path to Predictive Scale-Resolving Simulations of Turbulence

Filipe S. Pereira, Fernando F. Grinstein, Daniel M. Israel, Luis Eça
Journal: Journal of Verification, Validation and Uncertainty Quantification
Publisher: ASME
Article Type: Research-Article
J. Verif. Valid. Uncert. June 2022, 7(2): 021003.
Paper No: VVUQ-21-1035
https://doi.org/10.1115/1.4053884
Published Online: March 15, 2022
View Article titled, Verification and Validation: The Path to Predictive Scale-Resolving Simulations of Turbulence
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Topics: Engineering simulation, Errors, Flow (Dynamics), Modeling, Resolution (Optics), Simulation, Turbulence, Uncertainty, Circular cylinders, Computation
Proceedings Papers

Discretization Error Estimation in Subsonic, Transonic and Supersonic Flows of an Inviscid Fluid Over a Bump

Luís Eça, Cristiano Silva, João Muralha, Christiaan Klaij, Serge Toxopeus, Martin Hoekstra
Proc. ASME. VVS2021, ASME 2021 Verification and Validation Symposium, V001T04A001, May 19–20, 2021
Publisher: American Society of Mechanical Engineers
Paper No: VVS2021-65290
https://doi.org/10.1115/VVS2021-65290
View Paper titled, Discretization Error Estimation in Subsonic, Transonic and Supersonic Flows of an Inviscid Fluid Over a Bump
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Topics: Errors, Fluids, Supersonic flow, Uncertainty, Compressible flow, Computer simulation, Inviscid flow, Machinery, Pressure, Simulation
Proceedings Papers

Assessing RANS Numerical and Modeling Properties in the Simulation of the Flow Around Captive and Moving Cylinders

Rita M. Costa, Luís Eça, Arjen Koop
Proc. ASME. OMAE2020, Volume 8: CFD and FSI, V008T08A007, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18752
https://doi.org/10.1115/OMAE2020-18752
View Paper titled, Assessing RANS Numerical and Modeling Properties in the Simulation of the Flow Around Captive and Moving Cylinders
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Topics: Cylinders, Flow (Dynamics), Modeling, Reynolds-averaged Navier–Stokes equations, Simulation, Reynolds number, Turbulence, Unsteady flow, Damping, Diffusion (Physics)
Journal Articles

Code Verification of a Pressure-Based Solver for Subsonic Compressible Flows

João Muralha, Luís Eça, Christiaan M. Klaij
Journal: Journal of Verification, Validation and Uncertainty Quantification
Publisher: ASME
Article Type: Research-Article
J. Verif. Valid. Uncert. December 2020, 5(4): 041001.
Paper No: VVUQ-20-1008
https://doi.org/10.1115/1.4048750
Published Online: October 29, 2020
View Article titled, Code Verification of a Pressure-Based Solver for Subsonic Compressible Flows
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Topics: Compressible flow, Pressure, Density, Flow (Dynamics), Errors, Boundary-value problems
Proceedings Papers

On the Role of Discretization Errors in the Quantification of Parameter Uncertainties

Luís Eça, Filipe S. Pereira, Guilherme Vaz, Rui Lopes, Serge Toxopeus
Proc. ASME. VVS2020, ASME 2020 Verification and Validation Symposium, V001T03A003, May 20–22, 2020
Publisher: American Society of Mechanical Engineers
Paper No: VVS2020-8825
https://doi.org/10.1115/VVS2020-8825
View Paper titled, On the Role of Discretization Errors in the Quantification of Parameter Uncertainties
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Topics: Errors, Uncertainty, Approximation, Flow (Dynamics), Friction, Kinetic energy, Pressure, Propellers, Reynolds-averaged Navier–Stokes equations, Ships
Journal Articles

On the Numerical Behavior of RANS-Based Transition Models

Rui Lopes, Luís Eça, Guilherme Vaz
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. May 2020, 142(5): 051503.
Paper No: FE-19-1639
https://doi.org/10.1115/1.4045576
Published Online: February 3, 2020
View Article titled, On the Numerical Behavior of RANS-Based Transition Models
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Topics: Airfoils, Boundary-value problems, Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Turbulence, Wings, Reynolds number, Skin friction (Fluid dynamics), Uncertainty, Flat plates
Proceedings Papers

Numerical and Parameter Uncertainties: Are They Independent?

Luís Eça, Rui Lopes, Filipe Soares Pereira, Guilherme Vaz
Proc. ASME. VVS2019, ASME 2019 Verification and Validation Symposium, V001T06A002, May 15–17, 2019
Publisher: American Society of Mechanical Engineers
Paper No: VVS2019-5125
https://doi.org/10.1115/VVS2019-5125
View Paper titled, Numerical and Parameter Uncertainties: Are They Independent?
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Topics: Uncertainty, Errors, Computational fluid dynamics, Turbulence, Airfoils, Boundary-value problems, Eddies (Fluid dynamics), Engineering simulation, Flat plates, Flow (Dynamics)
Proceedings Papers

CFD Analysis of a Captive Bullet Entry in Calm Water With and Without Turbulence

René Bettencourt Rauffus, António Maximiano, Luís Eça, Guilherme Vaz
Proc. ASME. OMAE2019, Volume 2: CFD and FSI, V002T08A015, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96099
https://doi.org/10.1115/OMAE2019-96099
View Paper titled, CFD Analysis of a Captive Bullet Entry in Calm Water With and Without Turbulence
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Topics: Bullets, Computational fluid dynamics, Turbulence, Water, Wakes, Uncertainty, Collapse, Lifeboats, Computer simulation, Eddies (Fluid dynamics)
Journal Articles

Investigating the Effect of the Closure in Partially-Averaged Navier–Stokes Equations

Filipe S. Pereira, Luís Eça, Guilherme Vaz
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2019, 141(12): 121402.
Paper No: FE-18-1724
https://doi.org/10.1115/1.4043539
Published Online: June 3, 2019
View Article titled, Investigating the Effect of the Closure in Partially-Averaged Navier–Stokes Equations
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Topics: Flow (Dynamics), Navier-Stokes equations, Resolution (Optics), Simulation, Turbulence, Modeling, Errors, Reynolds-averaged Navier–Stokes equations, Engineering simulation
Proceedings Papers

Validation Exercises for a Free Falling Wedge Into Calm Water

João Muralha, Luís Eça, António Maximiano, Guilherme Vaz
Proc. ASME. OMAE2018, Volume 2: CFD and FSI, V002T08A013, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-78598
https://doi.org/10.1115/OMAE2018-78598
View Paper titled, Validation Exercises for a Free Falling Wedge Into Calm Water
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Topics: Water, Wedges, Sensors, Errors, Pressure, Simulation, Uncertainty, Modeling, Boundary-value problems, Flow (Dynamics)
Journal Articles

Numerical Uncertainty Analysis in Regular Wave Modeling

Monica C. Silva, Marcelo A. Vitola, Luís Eça, Paulo de Tarso T. Esperança, Sergio H. Sphaier
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research-Article
J. Offshore Mech. Arct. Eng. August 2018, 140(4): 041101.
Paper No: OMAE-17-1057
https://doi.org/10.1115/1.4039260
Published Online: February 22, 2018
View Article titled, Numerical Uncertainty Analysis in Regular Wave Modeling
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Topics: Errors, Uncertainty, Waves, Computer simulation, Modeling
Proceedings Papers

Validation Exercises for the Calculation of the Flow Around a Squared Column With Rounded Corners at High Reynolds Numbers With the RANS Equations

Luís Eça, Guilherme Vaz, Arjen Koop, Filipe Pereira, Hugo Abreu
Proc. ASME. OMAE2017, Volume 2: Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV, V002T08A015, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61937
https://doi.org/10.1115/OMAE2017-61937
View Paper titled, Validation Exercises for the Calculation of the Flow Around a Squared Column With Rounded Corners at High Reynolds Numbers With the RANS Equations
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Topics: Corners (Structural elements), Flow (Dynamics), Reynolds number, Reynolds-averaged Navier–Stokes equations, Eddies (Fluid dynamics), Errors, Viscosity, Boundary-value problems, Drag (Fluid dynamics), Engineering simulation
Proceedings Papers

Validation: What, Why and How

Luís Eça, Guilherme Vaz, Arjen Koop, Filipe Pereira, Hugo Abreu
Proc. ASME. OMAE2016, Volume 2: CFD and VIV, V002T08A001, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-54005
https://doi.org/10.1115/OMAE2016-54005
View Paper titled, Validation: What, Why and How
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Topics: Circular cylinders, Computational fluid dynamics, Electrohydrodynamics, Errors, Flat plates, Flow (Dynamics), Fluid dynamics, Fluids, Liquefied natural gas, Marine engineering
Proceedings Papers

On the Numerical Prediction of Transitional Flows With Reynolds-Averaged Navier-Stokes and Scale-Resolving Simulation Models

Filipe S. Pereira, Guilherme Vaz, Luís Eça, Sébastien Lemaire
Proc. ASME. OMAE2016, Volume 2: CFD and VIV, V002T08A007, June 19–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2016-54414
https://doi.org/10.1115/OMAE2016-54414
View Paper titled, On the Numerical Prediction of Transitional Flows With Reynolds-Averaged Navier-Stokes and Scale-Resolving Simulation Models
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Topics: Flow (Dynamics), Simulation models, Reynolds-averaged Navier–Stokes equations, Simulation, Turbulence, Boundary layers, Physics, Circular cylinders, Computer simulation, Delay differential equations
Proceedings Papers

Flow Past a Circular Cylinder: A Comparison Between RANS and Hybrid Turbulence Models for a Low Reynolds Number

Filipe S. Pereira, Guilherme Vaz, Luís Eça
Proc. ASME. OMAE2015, Volume 2: CFD and VIV, V002T08A006, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41235
https://doi.org/10.1115/OMAE2015-41235
View Paper titled, Flow Past a Circular Cylinder: A Comparison Between RANS and Hybrid Turbulence Models for a Low Reynolds Number
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Topics: Circular cylinders, Flow (Dynamics), Reynolds number, Reynolds-averaged Navier–Stokes equations, Turbulence, Delay differential equations, Ocean engineering, Boundary-value problems, Cylinders, Performance
Proceedings Papers

The Pros and Cons of Wall Functions

Luís Eça, Gonçalo Saraiva, Guilherme Vaz, Hugo Abreu
Proc. ASME. OMAE2015, Volume 2: CFD and VIV, V002T08A012, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41518
https://doi.org/10.1115/OMAE2015-41518
View Paper titled, The Pros and Cons of Wall Functions
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Topics: Airfoils, Boundary-value problems, Circular cylinders, Engineering instruments, Engineering simulation, Flat plates, Flow (Dynamics), Friction, Reynolds number, Reynolds-averaged Navier–Stokes equations
Proceedings Papers

On the Numerical Prediction of the Flow Around Smooth Circular Cylinders

Luís Eça, Guilherme Vaz, Guilherme Rosetti, Filipe Pereira
Proc. ASME. OMAE2014, Volume 2: CFD and VIV, V002T08A013, June 8–13, 2014
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2014-23230
https://doi.org/10.1115/OMAE2014-23230
View Paper titled, On the Numerical Prediction of the Flow Around Smooth Circular Cylinders
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Topics: Circular cylinders, Flow (Dynamics), Navier-Stokes equations, Uncertainty, Computational fluid dynamics, Eddies (Fluid dynamics), Errors, Turbulence, Cylinders, Drag (Fluid dynamics)
Proceedings Papers

Code Verification of ReFRESCO With a Statistically Periodic Manufactured Solution

Luís Eça, Guilherme Vaz, Martin Hoekstra
Proc. ASME. OMAE2014, Volume 2: CFD and VIV, V002T08A015, June 8–13, 2014
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2014-23258
https://doi.org/10.1115/OMAE2014-23258
View Paper titled, Code Verification of ReFRESCO With a Statistically Periodic Manufactured Solution
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Topics: Eddies (Fluid dynamics), Errors, Flow (Dynamics), Resolution (Optics), Spacetime, Turbulence, Uncertainty, Unsteady flow, Viscosity