Numerical study of an axisymmetric jet based on a new two-fluid turbulence model
Abstract
A new two-fluid model of turbulence is verified by the example of an axisymmetric incompressible jet. This model was previously tested for the problem, where a system of equations with constant pressure was used. In the article, a complete system of turbulence equations of the new model is considered. For comparison, the article also presents the numerical results of the well- known Spalart - Allmares (SA) model. Numerical realizations of the equations of hydrodynamics were performed using the Finite Volumes Method (FVM). The Leonardo QUICK (Quadratic Upstream Interpolation for Convective Kinematics) scheme was used to approximate the convective terms, and the central finite-difference scheme was used for the viscosity terms. Velocity correction was conducted according to the SIMPLEC method. The numerical results obtained are compared with experimental data from the NASA database. It is shown that the new two-fluid scheme more accurately describes the turbulent jet than the SA model.