Open AccessEffect of nozzle turbulent intensity in multiple round jets using openFOAM®
Author(s) -
B. T. Kannan,
Nikhil Gaur,
P. Balakrishnan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/912/2/022023
Subject(s) - turbulence , turbulence kinetic energy , mechanics , physics , jet (fluid) , intensity (physics) , nozzle , computational fluid dynamics , k epsilon turbulence model , reynolds number , flow (mathematics) , classical mechanics , thermodynamics , optics
The present work is about the effects of turbulent intensity on the flow field of turbulent multiple jets. The simulations are carried out by using an open-source Computational Fluid Dynamics C++ code OpenFOAM®. The governing equations invoked are Reynolds Averaged Navier Stokes equations by using simpleFoam solver. The standard two-equation turbulence model is used along with the mean flow equations to account for turbulence effects. The solved flow field shows a significant effect of turbulent intensity on the potential core of both single and multiple jets which is supported by reference literature. Downstream the potential core, the turbulence intensity does not affect the decay rate of turbulent jets considered in the study. The performance parameters show that the higher initial values of turbulent intensity is favorable only for the single jet simulations. In contrast, the lower initial values of turbulent intensity is favorable for multiple jet simulations.