WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461
Volume 14, 2019
Numerical Investigation of Coaxial Turbulent Jet
Authors: ,
Abstract: Implantation of the 3D compressible parallel code to study a compressible turbulent coaxial jet at higher number of Reynolds. The model of large eddy simulation used. In this model, only the larger structures are computed, and the effects of smaller scales are taken into account via a sub-grid scale model. The code was parallelized using the Message Passing Interface (MPI) library. The resolution full Navier Stokes equations are based on the compute the fluxes. In order to compute the fluxes, the fluxes were split into viscous fluxes and convective fluxes. Viscous fluxes are computed from the second order central differences in space. The convective fluxes are evaluated using the approximate Riemann solver. Approximate Riemann solver based on the linearization of the differential relations along the characteristic curves of the one-dimensional hyperbolic conservation laws. The solution was advanced in time using a two-stage explicit McCormack time-marching method, this method is accurate, efficient and simple to implement on parallel computers. The mean flow field and turbulence intensities of the coaxial jet have been calculated and analyzed. The results obtained in our simulation are found to be in very good agreement with the available experimental data of coaxial jet at similar flow conditions
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Pages: 98-106
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 14, 2019, Art. #12