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Simulation and Scale-up of Barium Sulphate Precipitation Process Using CFD Modeling

Chinese Journal of Chemical Engineering 2005年第2期13卷 167-172页

作者：龚俊波卫宏远王静康 john garside School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China Department of Chemical Engineering UMIST Manchester M601QD UK

Some empirical mixing models were used to describe the imperfect mixing in precipitation ***, the models can not, in general, reflect the details of interactions between mixing and crystallization in a vessel. In this study, CFD (computational fluid dynamics) technique were developed by simulating the precipitation of barium sulphate in stirred tanks by integration of population balance equations with a CFD solver. Two typical impellers, Rushton and pitched blade turbines, were employed for agitation. The influence of feed concentration and position on crystal product properties was investigated by CFD simulation. The scale-up of these precipitators was systematically studied. Significant effect on the crystal properties was found for the scale-up under some *** simulation, scale up, precipitation, CFD(computational fluid dynamics)

关键词：模拟技术硫酸钡 CFD模型流体动力学计算方法

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Rapid manufacturing of high-integrity aerospace components

Rapid manufacturing of high-integrity aerospace components

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第五届海内外青年设计与制造科学会议

作者： Vinesh Raja john garside International Manufacturing Centre Warwick Manufacturing Group University of Warwick Coventry CV4 7AL UK International Manufacturing Centre Warwick Manufacturing Group University of Warwick Coventry CV4 7AL UK

＜正＞This paper presents a comprehensive effort of theoretical investigations and industrial applications of computer-based rapid design and manufacturing technology for high-integrity aerospace components. Two rapid manufacturing processes have been proposed by integrating rapid prototyping, high-speed machining, reverse engineering and geometric computation theory. They have been validated through trial manufacturing of a matrix of a matrix of current aerospace components embracing critical design features to be found across many aerospace components. It has been found that the results of this research if applied to future development programmes will provide aerospace companies the benefits of significant decrease in product introduction lead-time, savings in non-recurring product introduction costs and considerable reduction in manufacturing costs for ’one off and low volume service parts.

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