About bubble size distribution simulation
 

hi,everyone, I try to simulate the bubble size distribution in a bubble column using a PBE model in a article,but i can't get the right bubble size distribution,would anyone be kind enough to check my UDF program to find where is wrong and give me some adivses on how to simulate the problem? The article with PBE model is: F. Kerdouss,A. Bannari, P. Proulx,CFD modeling of gas dispersion and bubble size in a double turbine stirred tank,Chemical Engineering Science 61 (2006) 3313â€"3322