Numerical Investigation of the Turbulent Wind Flow Through Elevated Windbreak

Agarwal, Ashish; Irtaza, Hassan

doi:10.1007/s40030-018-0301-z

Cited by 5 publications

(6 citation statements)

References 12 publications

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“…The domain size was considered so as to sufficiently eliminate the effects of air flow over the barrier on the windward and leeward side. The blockage ratio in the exposure plane was approximately 3,6 % [Agarwal, 2018].…”

Section: Computer Numerical Simulationmentioning

confidence: 88%

“…Based on this fact, the aerodynamic barrier thickness has to be thin compared to her height. That's why the aerodynamic barrier thickness is 20 mm which corresponds to the sides ratio (height/ thickness) equals to 100 [Agarwal, 2018].…”

Section: Computer Numerical Simulationmentioning

confidence: 99%

“…They were necessary to achieve the required convergence. In the computational domain with impermeable barrier fewer discretization elements were needed and used [Agarwal, 2018]. On the figure 2 we can see the disposition and the number of elements on the aerodynamic barrier surface.…”

Section: Computer Numerical Simulationmentioning

confidence: 99%

“…Opposite of the k-model is the RNG k-ߝ model, which deals with the spread of kinetic energy turbulence more efficiently. Singular measure dispersion it's not assumed for all turbulence regardless to their size such as in the standard model k-ߝ, that's the reason why some of the turbulence are filtered [Agarwal, 2018].…”

Section: Modeling the Turbulent Steam In Simulationsmentioning

confidence: 99%

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CFD Simulation, Change of Wind Velocity Through Netting as Perforated Barrier

Bockaj¹,

Žilinský²

2020

Proceedings of the enviBUILD 2019

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Main purpose of this article is determining the change in wind velocity and direction around and through the aerodynamic barrier. The barriers are made of four different types permeable materials and one barrier made of impermeable material. In the article is detailed description of the simulation procedure of the precise barriers in the program (CFD) Ansys Fluent 19.2. The simulation of the particular barriers consists of determining the eligible size of the computational domain, which proposition was based on the connections with the barrier height, since the barrier width is negligible in this case. Choosing the suitable computational model for the simulation was important, especially being based on the Reynolds Averaged Navier-Stokes equations. Based on the Forschheimer's equation, eligible positioning location of the aerodynamic barrier and adjustment for the permeability of individual materials in computer simulations. Conclusion of this article is the evaluation of the aerodynamic barrier simulations with simple pointing at the speed changes and wind flow, around and through the aerodynamic barriers.

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Section: Computer Numerical Simulationmentioning

confidence: 88%

Section: Computer Numerical Simulationmentioning

confidence: 99%

Section: Computer Numerical Simulationmentioning

confidence: 99%

Section: Modeling the Turbulent Steam In Simulationsmentioning

confidence: 99%

See 2 more Smart Citations

CFD Simulation, Change of Wind Velocity Through Netting as Perforated Barrier

Bockaj¹,

Žilinský²

2020

Proceedings of the enviBUILD 2019

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“…Computational Fluid Dynamics (CFD) techniques were used to simulate the fluid flow behaviour through porous media models using ANSYS Fluent 14 software. ANSYS Fluent 14 is a commercial software based on CFD technique using a finite volume approach [19]. The computational model was modelled having the same geometry as of experimental setup (50 cm in length and 15 cm in diameter).…”

Section: Simulation Workmentioning

confidence: 99%

Flow through Double Layered Porous Media Perpendicular to Bedding Plane: An Experimental & Simulation Work

Gupta*,

Alam,

Muzzammil

2019

IJEAT

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Permeability (k) is an essential property of soil and has its importance in various fields of soil mechanics and geotechnical engineering. It is the ease with which water can percolate through the interconnected voids in a soil mass. To determine the permeability of soil samples, experimentation work needs to be carried out. The permeability analysis of layered soil samples, i.e., double-layered or triple-layered soil samples, much more time is consumed to achieve accurate results. So, to bypass this time consumption and laborious physical work, Computational Fluid Dynamics (CFD) analysis proves to be beneficial. ANSYS Fluent 14 software is a powerful tool which works on CFD technique seems to provide accurate results for permeability analysis as compared to laboratory results. In the present study, CFD analysis of double-layered soil samples is carried out using ANSYS Fluent 14 software, and the results obtained by this technique are compared with the laboratory results. Experimental as well as a numerical study was carried out to determine permeability and pressure drop variation for double layer combinations developed using the five soil types namely gravel (G), coarse sand (CS), fine sand (FS), fly ash (FA) and silt (S), and a formulation was proposed to calculate viscous resistance factor experimentally which was validated through simulation results. The permeable soil layer was modeled as porous media obeying Forchheimer's law.

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Turbulent wind flow through permeable claddings mounted on elevated scaffold using CFD simulation

Agarwal

Irtaza

2020

Engineering Reports

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An extensive numerical study was carried out to evaluate the turbulent wind effects on permeable nets and impermeable film claddings mounted on elevated access scaffolding using computational fluid dynamics techniques. Debris net/sheet scaffold cladding was placed at a distance 1.5 m ahead of the cubical building. Permeable nets of various porosities and aerodynamic coefficients were simulated, and the effects of aerodynamic coefficients on the pressure coefficients were studied on the scaffolding. The airflow behavior around and through the claddings and the cubical building, were also investigated. Permeable claddings have been modeled as porous media following the Forchheimer equation. The renormalization group k–ε turbulence model using Reynolds averaged Navier–Stokes equations (RANS) was used to simulate turbulent wind through/around the scaffold cladding. Commercially available software ANSYS FLUENT 6.3 was used for simulation and analysis. Results showed that the force/pressure coefficients on permeable/debris net claddings are proportional to the aerodynamic coefficient.

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Numerical Investigation of the Turbulent Wind Flow Through Elevated Windbreak

Cited by 5 publications

References 12 publications

CFD Simulation, Change of Wind Velocity Through Netting as Perforated Barrier

CFD Simulation, Change of Wind Velocity Through Netting as Perforated Barrier

Flow through Double Layered Porous Media Perpendicular to Bedding Plane: An Experimental & Simulation Work

Turbulent wind flow through permeable claddings mounted on elevated scaffold using CFD simulation

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