Author/Authors :
Hnaien, N National Engineering School of Monastir - University of Monastir, Tunisia , Marzouk, S National Engineering School of Monastir - University of Monastir, Tunisia , Kolsi, L National Engineering School of Monastir - University of Monastir, Tunisia , Al-Rashed, A Department of Automotive and Marine Engineering Technology - College of Technological Studies - The Public Authority for Applied Education and Training, Kuwait , Ben Aissia, H National Engineering School of Monastir - University of Monastir, Tunisia , Jay, J Thermal Center of Lyon (CETHIL - UMR CNRS 5008), INSA Lyon, France
Abstract :
In this paper a CFD investigation on the interaction between an offset jet and an oblique wall jet using twodimensional
steady RANS equations is performed. This combination is denoted WOJ (Wall Offset jets).
Several turbulence models such as the standard k-ω, SST k-ω, standard k-ε, RNG k-ε and realizable k-ε
models are tested in the present study. A parametric study is performed to highlight the wall inclination effect
on the WOJ flow maximum velocity decay as well as the shear layers spreading. Comparison between
combined wall and offset jet (WOJ) and single offset jet (SOJ) flows is also established. Results show that
increasing the wall inclination improves the combined wall and offset jets flow spreading. Furthermore, the
outer shear layers spreading, is better than the inner shear layers one. Comparing to the combined wall and
offset jet flow (WOJ), a better spreading is found in the case of single offset jet flow (SOJ).
Keywords :
Turbulent flow , Steady RANS , Shear layer , Maximum velocity , Combined jets , Inclination
