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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >CFD modeling of sieve and pulsed-sieve plate extraction columns
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CFD modeling of sieve and pulsed-sieve plate extraction columns

机译：CFD建模筛和pulsed-sieve板提取列

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Present work deals with the development of a computational fluid dynamics(CFD)model for understanding the hydrodynamics in sieve and pulsed-sieve plate extraction columns.The model is based on Eulerian-Eulerian approach along with standard k-e model for turbulence.The CFD model has been validated by comparing(i)the height of the accumulated layer of the dispersed phase under the plate,and(ii)hold-up of the dispersed phase on the sieve plates with the corresponding values calculated by the correlations reported by Laddha and Degaleesan [Laddha,G.S.,Degaleesan,T.E.,1976.Transport Phenomena in Liquid Extraction.Tata McGraw Hills Publishing Co.Ltd.,pp.305-330].Model predictions were found to be within ±10%.The validated model has been extended to study the regime transition in pulsed-sieve plate columns.Overall,the developed CFD model is found to be able to predict the hydrodynamic aspects of plate extraction columns: like variation in hold-up above and below the plate,movement of continuous phase across the plate and through the downcomer,different operating regimes at different pulsing velocities,etc.
机译：现在的工作处理的发展计算流体动力学(CFD)模型筛的流体动力学和理解pulsed-sieve板提取列。基于Eulerian-Eulerian方法一起标准为湍流动能模型。已经验证通过比较(i)的高度吗的积累层分散阶段根据板,和(2)分散的停顿在筛盘与相应的阶段值计算的相关报道黑Laddha, G.S。、Degaleesan、T.E。、1976.Transport现象在液体提取。出版有限公司,pp.305 - 330]。被发现在±10%。已经扩展到研究政权过渡在pulsed-sieve板列。开发CFD模型是能够找到预测的水动力方面板提取列:像停顿的变化上方和下方,连续的运动整个板块,通过阶段下水管,不同的运营机制不同的脉冲速度等。

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