466021 An Efficient Numerical Approach for Transient Simulation of Multiphase Flow Behavior in Centrifuges
A more efficient method compared to experiments is the application of numerical simulations. Standard approaches for multiphase flows are Euler-Lagrange and Euler-Euler simulations. To describe the impact of the sediment on the separation efficiency long-term simulations are necessary. With the current simulation approaches these are not feasible to accomplish. In order to realize long-term simulations a new time-efficient simulation procedure for multiphase flows has to be developed.
An efficient method to simulate the multiphase flow in solid bowl centrifuges taking into consideration the flow behavior of the sediment is being developed at the Institute for Mechanical Process Engineering and Mechanics at the Karlsruhe Institute for Technology. The multiphase is modelled as a mixed phase. To consider the flow behavior, the rheology of suspension and sediment are differently modelled and locally and transient calculated within the centrifuge. The flow behavior of the sediment influences the distribution of the sediment and the homogeneity in the sediment height. The focus of the talk will be on the developed simulation approach and results comparing different process and material parameter.