CFD Investigation on the Steady Interaction between an Offset Jet and an Oblique Wall Jet

Authors

1 National Engineering School of Monastir, Unite of Metrology and Energy Systems, 5000 Rue Ibn Jazzar, Monastir 5035 Monastir, Tunisia

2 Unit of Metrology And Energy Systems, National Engineering School of Monastir, University of Monastir, Tunisia

3 College of Engineering, Mechanical Engineering Department, Haïl University, Saudi Arabia

4 Department. of Automotive and Marine Engineering Technology, College of Technological Studies, The Public Authority for Applied Education and Training, Kuwait

5 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 two-dimensional 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

Journal of Applied Fluid Mechanics
Volume 11, Issue 4
July 2018
Pages 885-894

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