Computational Fluid Dynamics Simulation of Scale up Oscillatory Baffled Column in Second Preliminary Study: Heat Transfer Effect

摘要

The first preliminary study of scaling up Oscillatory Baffled Column (OBC) has been done previously and all the criteria will be used into this second preliminary study. Ansys 14.0 has been used as a tool to simulate and identify the fluid flow behaviour in the OBC. Based on the first preliminary study, medium meshing method and DM3 geometrical model with 21 baffles (The diameter of OBC is 50mm and 1520mm in length) had been chosen as the best criteria to be used for up scaling purpose of OBC. Thus, in this second preliminary study, both of the criteria will be used and implemented to further identify the heat transfer effect in the OBC with presence of changing variables in velocity inlet and number of heat clamp, the heat source for the OBC. There are two sets of variables which are the velocity inlet (0.008 m/s, 0.010 m/s and 0.012 m/s) and model of HT1(3), HT2(5) and HT3(7) with different number of clamp heater. Based on the results, the highest velocity inlet which is 0.012 m/s and the HT2(5) heat source model of clamp heaters have been founded to be ideal scaling up parameters of OBC design. This will enlighten the heat transfer and its conductivity rate needed for fermentation process.