Implementation and verification of gust modeling in an open-source flow solver

2019 ◽  
Vol 92 ◽  
pp. 777-789
Author(s):  
Mehdi Ghoreyshi ◽  
Adam Jirasek ◽  
Tyler Miller ◽  
Michael Nuzum ◽  
Roger Greenwood
Keyword(s):  
Open Source ◽  
Flow Solver ◽  
Source Flow

CFD Challenge: Solutions Using Open Source Flow Solver Caffa3d.MBRi With Immersed Boundary Condition

2012 ◽  
Author(s):  
Gabriel Usera ◽  
Mariana Mendina
Keyword(s):  
Boundary Condition ◽  
Pressure Drop ◽  
Open Source ◽  
Cost Effective ◽  
Immersed Boundary ◽  
Effective Solution ◽  
Flow Solver ◽  
Pressure Drops ◽  
Source Flow

Open source flow solver caffa3d.MBRi is applied in this work to solve the cases proposed in the SBC2012 CFD Challenge, offering an overall very cost effective solution. It is found that cycle-averaged pressure drops are well represented by correspoding stationary cases, while peak systole pressure drop values are widly overestimated by corresponding stationary cases.

A General Purpose Parallel Block Structured Open Source Flow Solver

2012 ◽  
Author(s):  
Mariana Mendina ◽  
Martin Draper ◽  
Gabriel Narancio ◽  
Gabriel Usera ◽  
Ana Paula Kelm Soares
Keyword(s):  
Open Source ◽  
General Purpose ◽  
Flow Solver ◽  
Source Flow ◽  
Block Structured

VeriGOOD-ML: An Open-Source Flow for Automated ML Hardware Synthesis

2021 ◽  
Author(s):  
Hadi Esmaeilzadeh ◽  
Soroush Ghodrati ◽  
Jie Gu ◽  
Shiyu Guo ◽  
Andrew B. Kahng ◽  
...  
Keyword(s):  
Open Source ◽  
Hardware Synthesis ◽  
Source Flow

Generation of Regular and Irregular Waves in Navier-Stokes CFD Solvers by Matching With the Nonlinear Potential Wave Solution at the Boundaries

2018 ◽  
Author(s):  
Youngmyung Choi ◽  
Benjamin Bouscasse ◽  
Sopheak Seng ◽  
Guillaume Ducrozet ◽  
Lionel Gentaz ◽  
...  
Keyword(s):  
Viscous Flow ◽  
Open Source ◽  
Cfd Simulation ◽  
Irregular Waves ◽  
Navier Stokes ◽  
Wave Fields ◽  
Flow Solver ◽  
Nonlinear Potential ◽  
Simulation Parameters ◽  
2D And 3D

The capability of wave generation and absorption in a viscous flow solver becomes important for achieving realistic simulations in naval and offshore fields. This study presents an efficient generation of nonlinear wave fields in the viscous flow solver by using a nonlinear potential solver called higher-order spectral method (HOS). The advantages of using a fully nonlinear potential solver for the generation of irregular waves are discussed. In particular, it is shown that the proposed method allows the CFD simulation to start at the time and over the space of interest, retrieved from the potential flow solution. The viscous flow solver is based on the open source library OpenFOAM. The potential solvers used to generate waves are the open source solvers HOS-Ocean and HOS-NWT (Numerical Wave Tank). Several simulation parameters in the CFD solver are investigated in the present study. A HOS wrapper program is newly developed to regenerate wave fields in the viscous flow solver. The wrapper program is validated with OpenFOAM for 2D and 3D regular and irregular waves using relaxation zones. Finally, the extreme waves corresponding to the 1000 year return period condition in the Gulf of Mexico are simulated with the viscous flow solver and the wave elevation is compared with the experiments.

Predicting the Powering Performance of Different Vessel Types using an Open-Source CFD Propulsion Framework

2021 ◽  
Author(s):  
Björn Windén
Keyword(s):  
Energy Saving ◽  
Open Source ◽  
Fuel Efficiency ◽  
Computational Effort ◽  
The Body ◽  
Cfd Simulations ◽  
Local Flow ◽  
Flow Solver ◽  
Twin Screw ◽  
Coupled Solvers

CFD is a useful tool for ship designers looking for accurate predictions of the fuel efficiency achieved by a certain combination of hull, propeller and Energy Saving Devices (ESDs). Such predictions are key to meeting ever-increasing demands for reductions in emissions. However, CFD simulations of propeller-hull interaction can be very costly in terms of computational effort due to the need to resolve the unsteady flow around the rotating propeller. A popular approach to alleviate this cost, that has seen much practical use in industry, is the use of body forces (momentum sources) to represent the rotating propeller. There are many ways to describe the body force distribution in the fluid for a certain propeller and there are many options for what flow solver to use. In a previous meeting of the Society, an open-source framework for easily creating coupled solvers using an arbitrary combination of models was presented. Here, one of these coupled solvers is used to predict the local flow behind the propeller, as well as integral coefficients indicating performance, of four different vessels: a bulk carrier fitted with an Energy Saving Device, a fast container ship, a tanker and a fully appended twin-screw navy destroyer. All simulations are compared to available experimental data. Conclusions are drawn based on the success of the coupled solver to predict the local flow behind the propeller for each individual hull and how this relates to the vessel type and the local stern geometry.

CFD Challenge: Solutions Using an Open-Source Finite Volume Solver, OpenFOAM

2012 ◽  
Author(s):  
Joris Degroote ◽  
Patrick Segers ◽  
Jan Vierendeels
Keyword(s):  
Open Source ◽  
Finite Volume ◽  
Analysis Of Algorithms ◽  
Volume Flow ◽  
Postdoctoral Fellow ◽  
Cfd Simulations ◽  
Flow Solver ◽  
Structure Interaction ◽  
Flow Heat ◽  
Computational Fluid Dynamics Cfd

The Institute Biomedical Technology and the Department of Flow, Heat and Combustion Mechanics of Ghent University have for more than a decade worked on the development and analysis of algorithms for the simulation of computational fluid dynamics (CFD) and fluid-structure interaction (FSI). These algorithms are applied to blood flow in large arteries, among others. For this Challenge, grid generation and CFD simulations have been performed by postdoctoral fellow Joris Degroote, using an open-source finite volume flow solver, OpenFOAM.

scholarly journals MFC: An open-source high-order multi-component, multi-phase, and multi-scale compressible flow solver

2020 ◽  
pp. 107396 ◽  
Author(s):  
Spencer H. Bryngelson ◽  
Kevin Schmidmayer ◽  
Vedran Coralic ◽  
Jomela C. Meng ◽  
Kazuki Maeda ◽  
...  
Keyword(s):  
Open Source ◽  
Compressible Flow ◽  
High Order ◽  
Flow Solver ◽  
Multi Scale ◽  
Multi Phase

Validation and scalability of an open source parallel flow solver

2017 ◽  
Vol 29 (21) ◽  
pp. e4330 ◽  
Author(s):  
L. Bricteux ◽  
S. Zeoli ◽  
N. Bourgeois
Keyword(s):  
Open Source ◽  
Parallel Flow ◽  
Flow Solver

Analysis of an open source quadtree grid shallow water flow solver for flood simulation

2015 ◽  
Vol 384 ◽  
pp. 118-128 ◽  
Author(s):  
Hyunuk An ◽  
Soonyoung Yu ◽  
Giha Lee ◽  
Yeonsu Kim
Keyword(s):  
Shallow Water ◽  
Open Source ◽  
Water Flow ◽  
Shallow Water Flow ◽  
Flood Simulation ◽  
Flow Solver
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