Numerical investigation and triple-parameters correlations development on the dynamic characteristics of a turbulent offset jet

• Published in: Journal of turbulence Vol. 22; no. 6; pp. 325 - 352
• Main Authors: Ajmi, Meriem, Hnaien, Nidhal, Marzouk, Saloua, Kolsi, Lioua, Ghachem, Kaouther, Ben Aissia, Habib
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 03.06.2021
• Subjects: correlations; inclined wall; Offset jet; offset ratio; reattachment point
• ISSN: 1468-5248; 1468-5248
• DOI: 10.1080/14685248.2020.1863416

The present numerical study aims to numerically investigate the dynamic and turbulent characteristics of a two-dimensional and turbulent offset jet. Three different parameters were investigated: The Reynolds numbers (Re) which was varied from 10000 to 30000, wall inclination angle (α) that was from −20° to +20° and finally the offset ratio (OR) which extends from 3.25-13. Ansys Fluent was numerical CFD solver used in this present investigation. The simultaneous effects of the OR, Re and α were investigated in details. The velocity and pressure contours showed that these three parameters do not contribute equally in the development of such a flow. Also, the turbulent characteristics, such as the turbulence intensities and energies depicted how each parameter influences, separately, the turbulent flow production. Furthermore, different of tripled parameters correlations were developed. These correlations may be of help to more understand certain offset jet flow features more accurately and to predict their exact values.