Investigation of the Spalart-Allmares Turbulence Model for Calculating a Centrifugal Separator

A study of SA turbulence models in application to the calculation of swirling currents inside the separator has been carried out. The paper compared two approaches using vorticity and current functions to eliminate pressure and a semi-implicit method for pressure-binding SIMPLE to solve the Reynolds-averaged Navier-Stokes equations. For the numerical solution of both approaches, an implicit method against the flow was used

Modeling of Deformation Processes and Flow of Highly Concentrated Suspensions in Cylindrical Pipelines

The article discusses the improvement of mathematical modeling of deformation processes and the flow of highly concentrated suspensions (pulps) in cylindrical pipelines, taking into account the rheological model of visco-inertially deformable media introduced by I.N.Khusanov using the concept of deformation properties by inertia, which has found application to improve the efficiency of mining, concentrates and tailings for hydraulic transport. The problem is solved using finite-difference methods for vortex equations and the flow functio

Comparison of Turbulence Models for the Problem of an Asymmetric Two-Dimensional Plane Diffuser

In this paper, the turbulent flow in an asymmetric two-dimensional diffuser is investigated. In many applications, it is important to know whether the boundary layer (laminar or turbulent by calculating the Reynolds number, which is the ratio of the inertia force to the viscous fluid flow force) will separate from the surface or inside a particular body. If this happens, it is also important to know exactly where the flow separation will occur. The separation can be internal or external. This is quite important in many tasks