Limiting Velocities in Countercurrent Fluid-Fluid Packed Columns

Swashzone Fluid Velocities

The overall objective of these projects is to improve models for fluid velocities in the swash zone. Although runup excursions and cross-shore swashzone velocities owing to random waves on a natural beach are predicted well by a model (Rbreak) based on the vertically-averaged nonlinear shallow water equations with quadratic bottom friction (Kobayashi et al. 1989, Raubenheimer et al. 1995, Raube...

Packed Column Supercritical Fluid Chromatography

Nicole Riddell (2017): Packed Column Supercritical Fluid Chromatography: Applications in Environmental Chemistry. Örebro Studies in Chemistry 19. Although gas and liquid chromatography have emerged as dominant separation techniques in environmental analytical chemistry, these methods do not allow for the concurrent analysis of chemically diverse groups of persistent organic pollutants (POPs). T...

Fluid Mechanics and TransDort Phenomena Modeling Flow in Disordered Packed Beds from Pore-Scale Fluid Mechanics

Network models are an effective means of incorporatingpore-scale heterogeneity into flow models of porous materials. The drawback to these models used to be the inability to obtain quantitative macroscopic parameters representing larger (experimental-scale) media. However, recently developed modeling techniques, combined with more widely available computational resources, make the simulation of...

Prediction of Mean Drop Size in Pulsed Packed Extraction Columns

Fluid dynamics in multiphase distillation processes in packed towers

In order to design packed columns for multiphase operation it is necessary to include reliable data on the flow behavior in the model. Since experiments inside packings are very difficult to perform, CFD simulations are considered to be a sensible approach as numerical experiments. To obtain reliable results validation is inevitable. We present the validation of twoand three-phase film flow und...