<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The study of flow around obstacles is devised into three different positions: above the obstacle, upstream of the obstacle, and downstream of the latter. The behaviour of the fluid downstream of the obstacle is less known, and the physical and numerical modelling is being given the existence of recirculation zones with their complex behaviour. The purpose of the work presented below is to study the influence of the inclined form of the two upper peaks of a rectangular cube. A three-dimensional study was carried out using the ANSYS CFX calculation code. Turbulence models have been used to study the flow characteristics around the inclined obstacle. The time-averaged results of contours of velocity vectors &lt;V>, cross-stream &lt;v> and stream wise velocity &lt;u> and streamlines were obtained by using K-ω shear -stress transport (SST), RANG K-ε and K-ε to model the turbulence, and the governing equations were solved using the finite volume method. The turbulence model K-ω SST has presented the best prediction of the flow characteristics for the obstacle among the investigated turbulence models in this work.</p></abstract>

The study of flow around obstacles is devised into three different positions: above the obstacle, upstream of the obstacle, and downstream of the latter. The behaviour of the fluid downstream of the obstacle is less known, and the physical and numerical modelling is being given the existence of recirculation zones with their complex behaviour. The purpose of the work presented below is to study the influence of the inclined form of the two upper peaks of a rectangular cube. A three-dimensional study was carried out using the ANSYS CFX calculation code. Turbulence models have been used to study the flow characteristics around the inclined obstacle. The time-averaged results of contours of velocity vectors <V>, cross-stream <v> and stream wise velocity <u> and streamlines were obtained by using K-ω shear -stress transport (SST), RANG K-ε and K-ε to model the turbulence, and the governing equations were solved using the finite volume method. The turbulence model K-ω SST has presented the best prediction of the flow characteristics for the obstacle among the investigated turbulence models in this work.

Simulation and Analysis of a Turbulent Flow Around a Three-Dimensional Obstacle

Faculty of Technology, Department of Mechanical Engineering

Acta Mechanica et Automatica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Simulation and Analysis of a Turbulent Flow Around a Three-Dimensional Obstacle"}

The study of flow around obstacles is devised into three different positions: above the obstacle, upstream of the obstacle, and downstream of the latter. The behaviour of the fluid downstream of the obstacle is less known, and the physical and numerical modelling is being given the existence of recirculation zones with their complex behaviour. The purpose of the work presented below is to study the influence of the inclined form of the two upper peaks of a rectangular cube. A three-dimensional study was carried out using the ANSYS CFX calculation code. Turbulence models have been used to study the flow characteristics around the inclined obstacle. The time-averaged results of contours of velocity vectors , cross-stream  and stream wise velocity  and streamlines were obtained by using K-ω shear -stress transport (SST), RANG K-ε and K-ε to model the turbulence, and the governing equations were solved using the finite volume method. The turbulence model K-ω SST has presented the best prediction of the flow characteristics for the obstacle among the investigated turbulence models in this work.

The study of flow around obstacles is devised into three different positions: above the obstacle, upstream of the obstacle, and downstream of the latter. The...

Simulation and Analysis of a Turbulent Flow Around a Three-Dimensional Obstacle

Online veröffentlicht: 05. Nov. 2019

Seitenbereich: 173 - 180

Eingereicht: 14. März 2019

DOI: https://doi.org/10.2478/ama-2019-0023

Schlüsselwörter
Turbulent flow, Obstacle, Finite volume, Turbulence models, ANSYS-CFX

© 2019 Lamia Benahmed et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Simulation and Analysis of a Turbulent Flow Around a Three-Dimensional Obstacle

Online veröffentlicht: 05. Nov. 2019

Seitenbereich: 173 - 180

Eingereicht: 14. März 2019

DOI: https://doi.org/10.2478/ama-2019-0023

SchlüsselwörterTurbulent flow, Obstacle, Finite volume, Turbulence models, ANSYS-CFX

© 2019 Lamia Benahmed et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
Turbulent flow, Obstacle, Finite volume, Turbulence models, ANSYS-CFX