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Khaled Yassin, Stephan Kelm, Manohar Kampili and Ernst-Arndt Reinecke
As the applications of hydrogen as a replacement for fossil fuels and energy storage increase, more concerns have been raised regarding its safe usage. Hydrogen?s extreme physical properties?its lower flammability limit (LFL), for instance?represent a ch...
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Tiantian Li, Hongya Qu, Yi Zhao, Ryan Honerkamp, Guirong Yan, Arindam Chowdhury and Ioannis Zisis
In the study, a series of wind tunnel tests were conducted to investigate wind effects acting on dome structures (1/60 scale) induced by straight-line winds at a Reynolds number in the order of 106. Computational Fluid Dynamics (CFD) simulations were per...
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Federico Piscaglia and Federico Ghioldi
We introduce algorithmic advancements designed to expedite simulations in OpenFOAM using GPUs. These developments include the following. (a) The amgx4Foam library, which connects the open-source AmgX library from NVIDIA to OpenFOAM. Matrix generation, in...
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Seongjin Song and Sunho Park
In this paper, numerical studies were carried out on scour around a subsea pipeline. A coupled solver between computational fluid dynamics (CFD) and discrete element method (DEM) was selected to simulate fluid flow and particle interactions. To select an...
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Lu Wang, Amy Robertson, Jason Jonkman, Jang Kim, Zhi-Rong Shen, Arjen Koop, Adrià Borràs Nadal, Wei Shi, Xinmeng Zeng, Edward Ransley, Scott Brown, Martyn Hann, Pranav Chandramouli, Axelle Viré, Likhitha Ramesh Reddy, Xiang Li, Qing Xiao, Beatriz Méndez López, Guillén Campaña Alonso, Sho Oh, Hamid Sarlak, Stefan Netzband, Hyunchul Jang and Kai YuaddShow full author listremoveHide full author list
Currently, the design of floating offshore wind systems is primarily based on mid-fidelity models with empirical drag forces. The tuning of the model coefficients requires data from either experiments or high-fidelity simulations. As part of the OC6 (Off...
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Sarat Chandra Mohapatra, Hafizul Islam, Thiago S. Hallak and C. Guedes Soares
A mathematical model of solitary wave interaction with a pontoon-type rigid floating structure over a flat bottom is formulated based on Boussinesq-type equations under weakly nonlinear dispersive waves. Based on the higher-order Boussinesq equations, th...
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Kunyu Han, Xide Cheng, Zuyuan Liu, Chenran Huang, Haichao Chang, Jianxi Yao and Kangli Tan
Maneuverability, which is closely related to operational performance and safety, is one of the important hydrodynamic properties of an underwater vehicle (UV), and its accurate prediction is essential for preliminary design. The purpose of this study is ...
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Georgios Maragkos and Tarek Beji
Progress in fire safety science strongly relies on the use of Computational Fluid Dynamics (CFD) to simulate a wide range of scenarios, involving complex geometries, multiple length/time scales and multi-physics (e.g., turbulence, combustion, heat transf...
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Guillermo Puelles Magán, Wouter Terra and Andrea Sciacchitano
In this work, we investigate the flow field around speed skating helmets and their associated aerodynamic drag by means of computational fluid dynamics (CFD) simulations. An existing helmet frequently used in competition was taken as a baseline. Six addi...
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Radoslav Ponechal, Peter Kru?inský, Peter Kysela and Peter Pisca
For a deep understanding of the airflow in an environment of historic wooden trusses, it is necessary to analyze the object using simulation methods. To calculate the amount of air passing through the structural openings (components) using dynamic simula...
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Pietro Casalone, Oronzo Dell?Edera, Beatrice Fenu, Giuseppe Giorgi, Sergej Antonello Sirigu and Giuliana Mattiazzo
The hydrodynamic investigation of a hull?s performance is a key aspect when designing a new prototype, especially when it comes to a competitive/racing environment. This paper purports to perform a fully nonlinear unsteady Reynolds Averaged Navier-Stokes...
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Marco Fontana, Pietro Casalone, Sergej Antonello Sirigu, Giuseppe Giorgi, Giovanni Bracco and Giuliana Mattiazzo
During the optimization phase of a wave energy converter (WEC), it is essential to be able to rely on a model that is both fast and accurate. In this regard, Computational Fluid Dynamic (CFD) with Reynolds Averaged Navier?Stokes (RANS) approach is not su...
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Jakub Mularski and Norbert Modlinski
This paper examines the impact of different chemistry?turbulence interaction approaches on the accuracy of simulations of coal gasification in entrained flow reactors. Infinitely fast chemistry is compared with the eddy dissipation concept considering th...
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Sarat Chandra Mohapatra, Hafizul Islam and C. Guedes Soares
A mathematical model for the problem of wave diffraction by a floating fixed truncated vertical cylinder is formulated based on Boussinesq equations (BEs). Using Bessel functions in the velocity potentials, the mathematical problem is solved for second-o...
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Zuzana Straková, Jozef Vojta??ák, Peter Benovský, Daniela Koudelková
Pág. 201 - 206
The aim of this study is to design industrial ventilation in the production hall. With respect to the many parameters which influence the appropriate proposal of industrial ventilation that need to be considered, there is a good chance for miscalculation...
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Miroslava Kmecová, Michal Krajcík, Zuzana Straková
Pág. 39 - 43
The aim of this study was to design a fire ventilation system with impulse jet fans for an underground car park. With respect to the number of parameters affecting the spread of smoke that need to be considered, there is a good chance of miscalculations ...
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Pál Schmitt, Christian Windt, Josh Davidson, John V. Ringwood and Trevor Whittaker
Computational Fluid Dynamics (CFD) simulations, based on Reynolds-Averaged Navier?Stokes (RANS) models, are a useful tool for a wide range of coastal and offshore applications, providing a high fidelity representation of the underlying hydrodynamic proce...
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Christian Windt, Josh Davidson, Pál Schmitt and John V. Ringwood
A fully non-linear numerical wave tank (NWT), based on Computational Fluid Dynamics (CFD), provides a useful tool for the analysis of coastal and offshore engineering problems. To generate and absorb free surface waves within a NWT, a variety of numerica...
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Marieli Azoia Lukiantchuki, Alessandra Prata Shimomura, Fernando Marques da Silva, Rosana Maria Caram (Author)
Pág. e37537
Wind tunnel experiments and Computational Fluid Dynamics (CFD) simulations are used to analyze natural ventilation in a sawtooth roof building. A 1:10 scale model is tested in an atmospheric boundary layer wind tunnel. The CFD simulations are perfo...
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Marieli Azoia Lukiantchuki, Alessandra Prata Shimomura, Fernando Marques da Silva, Rosana Maria Caram
Pág. e37537
Wind tunnel experiments and Computational Fluid Dynamics (CFD) simulations are used to analyze natural ventilation in a sawtooth roof building. A 1:10 scale model is tested in an atmospheric boundary layer wind tunnel. The CFD simulations are perfo...
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