Immersed membrane bioreactor

Local scale

This study place in the scale of a bubble. The shearing takes also place in the boundary layer. With the software Matlab, I've developed a small program to estimate the upstroke velocity, the Reynolds number and the shearing in the boundary layer with a simple approach. This approach is aimed to find magnitude orders in order to better model the system. The model mustn't become simplistic, notably about the estimation of the drag coefficient.

The different steps are described below :

The program finds the following results (click on to enlarge):