CFD Modeling of the Fjardaal Smelter Potroom Ventilation
The Fjarðaál Smelter Potline buildings are designed to achieve ventilation of heat and fugitive emissions using a system based on natural convection. The design of the Potline buildings is based on Alcoa’s Aluminerie Deschambault, located in Deschambault, Québec, Canada. The Fjarðaál Smelter Potline buildings, located adjacent to a fjord in Eastern Iceland, are longer and are situated on a sloping site. The Fjarðaál Project is faced with additional unique factors — local terrain, high wind speed, and multiple approach wind directions — that interact in a complex manner, thus making the performance of the ventilation system difficult to predict.
To help guide the ventilation design, as in similar prior studies ,  and , computational fluid dynamics (CFD) modeling was employed. The CFD analysis utilized state-of-the-art capabilities to capture in detail the velocities, temperatures, pressures, and emissions concentrations inside and outside the buildings. The model was validated against smoke tests conducted at the Deschambault smelter.
The model demonstrated that the ventilation system performance is relatively unaffected by the terrain and winds, implying that the claustra wall design is very effective. Pressure gradients can cause localized non-uniform flow patterns in the Potroom, however, these effects are manageable and within the system’s performance design envelope.
KeywordsVentilation Potrooms CFD
Unable to display preview. Download preview PDF.
- M. Dupuis, “3D Modeling of the Ventilation Pattern in an Aluminum Smelter ‘Potroom’ Building using CFX-4”, CFD2001 Conference. Canada. Waterloo. Ontario. May 27 – 29. 2001.Google Scholar
- J. Bos, et al, “Numerical; Simulation, Tools to Design and Optimize Smelting Technology”, Light Metals 1998. 393–401.Google Scholar