Simulation and analysis of a turbulent flow around a three-dimensional obstacle

• Autorzy: Benahmed Lamia , Aliane Khaled

Identyfikatory

DOI

10.2478/ama-2019-0023

• Języki publikacji: EN

Abstrakty

EN

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 timeaveraged 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.

Słowa kluczowe

EN

turbulent flow; obstacle; finite volume; turbulence models; ANSYS CFX

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Acta Mechanica et Automatica
• Rocznik: 2019
• Tom: Vol. 13, no. 3
• Strony: 173--180
• Opis fizyczny: Bibliogr. 33 poz., rys.

Twórcy

autor

Benahmed Lamia

• Faculty of Technology, Department of Mechanical Engineering, University of Tlemcen, Bp 230, Chetouane Tlemcen, Algeria

autor

Aliane Khaled

• Faculty of Technology, Department of Mechanical Engineering, University of Tlemcen, Bp 230, Chetouane Tlemcen, Algeria

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