About This Video
This video shows Barracuda Virtual Reactor simulation results for a simple Fluidized Bed across three subcases, which together reflect the functionality of the Dynamic Distribution feature for Injection Boundary Conditions. The Dynamic Distribution feature allows Virtual Reactor to calculate the fluid flow rate at each injection location as a function of the local pressure at that location rather than assuming uniform fluid flow across all locations. As a result, maldistribution effects can be diagnosed in Virtual Reactor by toggling this feature and adjusting the Orifice Discharge Coefficient Parameter. In the left case, the feature is turned off, and the resulting simulation shows a relatively uniform gas flow through the bed. In the center case, the feature is turned on, but the distributor is assumed to be well-designed. Again, the simulation shows a relatively uniform gas flow with perhaps slightly more variation than with the feature off. Finally, in the right case, the Dynamic Distribution is turned on with a distributor pipe that is assumed to be poorly designed. The simulation results show dramatically different aerodynamics as the flow rates at each fluid injection location react to the shifting pressure of the system. Hence, maldistribution can be adequately modeled, and its effects can then be analyzed.