Numerical investigation of two-phase media separation in the hydrodynamic filter

Today lots of industries require filtration of two-phase flows with high viscosity non-Newtonian dispersion medium and solid dispersion phase in order to reduce energy consumption for cleaning applications. Specific feature of the separation process for such flows is the limited service life of the filtering equipment. These problems can be solved by modernized tangential filtration with complex flow organization. In the working convergent annular channel are implemented two mechanisms of purification: centrifugal separation and filtration. This work investigates the behavior of solids in non-Newtonian fluids in a context of complex force impacts on flow, as implemented in hydrodynamic filters. The numerical investigation of the flow structure in the convergent annular channel with rotating inner permeable wall was performed. The optimal ratios of the operating parameters are obtained, which ensure steady flow and minimum separation load on the permeable baffle. The obtained results can be used in the design of systems that have high requirements for the purity of the liquid. (paper)