Numerical study of two-phase flow in centrifugal dust collector based in two liquid turbulence model

It is known that mathematical modeling of twisted turbulent flows is a complex problem. Research of such flows using direct modeling (DNS) methods or models of large vortices (LES) requires large computational resources. And the numerical study of the two-phase turbulent flow inside the centrifugal dust collector based on the mentioned methods is practically impossible to date. Therefore, for the study of such flows, suitable mathematical models are turbulence models based on the closure of the Navier-Stokes equations averaged by Reynolds (RANS). However, linear RANS models based on the Boussinesq hypothesis are not suitable for solving such problems. The fact is that the Boussinesq hypothesis assumes isotropic turbulence, and in the case of rotating currents, anisotropic turbulence occurs. With small swirls of flow, special corrections are introduced into RANS linear models. With strong swirls of the flow, for example, as in centrifugal dust collectors, these corrections may not be sufficient to obtain acceptable numerical solutions. Therefore, in such cases, it is recommended to use non-linear RANS models, for example, based on Reynolds stresses. However, these models are very complex and cumbersome for studying two-phase environments. Recently, a new two liquid model of turbulence has appeared. This model has high accuracy and is easy to implement in solving practical problems. Therefore, the object of the present work is to numerically investigate the two-phase turbulent flow within the centrifugal dust collector based on the new two liquid models. To verify the model, the obtained numerical results are compared with experimental data. The paper also presents the results obtained from the SARC linear model.