Three-dimensional simulation of liquid flow on a sieve tray under different inclinations

Brazilian Journal of Chemical Engineering

Zhang Ping²  Jin Dan¹  Meng Huibo¹  Wu Jianhua¹ 

[1] ,Tianjin University School of Chemical Engineering and Technology Tianjin,China

关键词: Inclination;    Volume of Fluid (VOF) method;    Tray;    Clear liquid height;   

DOI  :  10.1590/0104-6632.20140314s00003038

来源: SciELO

【 摘 要 】

The fluid state on a sieve tray will change when the towers tilt under wind loads. A computational fluid dynamics (CFD) model was used to predict the flow patters and hydraulics on the tray under different inclinations. The gas and liquid phases are modelled with the volume-of-fluid (VOF) framework as two inmiscible phases. Several three-dimensional transient simulations were carried out for a 0.38m diameter tray with varying liquid weir loads and inclined angles. The clear liquid height determined from these simulations is in reasonable agreement with experimental measurements carried out for air-water in a round tray of the same dimensions. The simulation results show that, compared with the horizontal tray, the circulation area is bigger when the liquid flow and inclination direction of the tray are the same, but when they are opposite the circulation area is smaller. The percentage of circulation area to the tray area can obviously be decreased, along with increasing liquid weir loads. It is concluded that CFD can be used for the prediction of liquid flow on sieve trays under different inclinations

【 授权许可】

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