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Full-Text Articles in Engineering
Numerical Simulation On Dilute Phase Pneumatic Transport, Ethan T. Doan
Numerical Simulation On Dilute Phase Pneumatic Transport, Ethan T. Doan
Electronic Thesis and Dissertation Repository
Pneumatic conveying is a technique that is widely used in many industrial mechanical and chemical applications. In the case of cement manufacturing pneumatic conveying is a large scale operation moving several kilograms of material per second which consumes electrical energy (operation of fans) and money (replacement of filters to remove particles from the air). At St Mary’s Cement the pneumatic conveying line was studied with a CFD model. The treatment of the secondary solid phase was done with the DPM formulation in ANSYS Fluent and turbulence was modelled with k-ω SST. It was found that simple geometric alterations to the …
Numerical Simulation Of An Open Channel Ultraviolet Waste-Water Disinfection Reactor, Rajib Kumar Saha
Numerical Simulation Of An Open Channel Ultraviolet Waste-Water Disinfection Reactor, Rajib Kumar Saha
Electronic Thesis and Dissertation Repository
The disinfection characteristics of an open channel ultra-violet (UV) wastewater disinfection reactor are investigated using a computational fluid dynamics (CFD) model. The model is based on the volume of fluid method to capture the water-air interface, the Lagrangian particle tracking method to determine the microbial particle trajectory and the discrete ordinate model to calculate the UV intensity field. The numerical predictions are compared with the available experimental data to validate the CFD model. A parametric study is performed to understand the effects of different parameters on the disinfection performance of the reactor. The hydraulic behaviour and the additive nature of …