Algebraic Modeling of the Liquid Film Dynamics in a Centrifugal Separator

作者：Ninahuanca H E M; Stel H; Morales R E M^*

来源：AIChE Journal, 2017, 63(9): 4147-4160.

DOI：10.1002/aic.15724

• flow
• centrifugal separator
• algebraic model
• numerical

This work presents an algebraic model to estimate liquid film flow variables in a centrifugal separator. A mechanistic approach is employed to evaluate operating quantities such as the film thickness and velocity components. The model is based on a force balance on a fluid element of an idealized mean streamline. Additional terms account for the sudden spread of the inflowing stream at the entrance of the cylindrical chamber. A previously validated computational fluid dynamics (CFD) model is used to provide some constants for constitutive equations required by the algebraic model. Results from the algebraic and CFD models agree well for a wide range of Reynolds and Froude numbers. The proposed model can be useful to obtain fast and accurate predictions of the behavior of the liquid flow in the type of separators studied and to help designing more reliable and efficient concepts.

• 出版日期2017-9