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Analysis of air flow resistance through a porous stone bed
Biosystems Engineering ( IF 5.1 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.biosystemseng.2020.08.002 Sławomir Kurpaska , Paweł Kiełbasa , Zygmunt Sobol , Sylwester Tabor , Maciej Gliniak , Kamil Bojdo
Biosystems Engineering ( IF 5.1 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.biosystemseng.2020.08.002 Sławomir Kurpaska , Paweł Kiełbasa , Zygmunt Sobol , Sylwester Tabor , Maciej Gliniak , Kamil Bojdo
The results of analysis of airflow resistance through a porous stone accumulator bed are presented with studies conducted in laboratory and in a full-scale facility. The Darcy–Weisbach equation and Ergun's equation were used to determine the flow resistance coefficients. It was found that a simplification of the Ergun's equation by omitting the viscosity term did not result in a significant error in estimating the flow resistance. Dimensional analysis was applied to analyse the flow resistance in the full-scale facility and to determine the form and parameters of equation allowing a calculation of airflow resistance as a function of independent variables. The analysis showed a significant convergence between the friction factors and flow resistance calculated with the use of proposed equations and the values obtained from measurements. It is concluded that the following factors have the largest impact on the airflow resistance in order: bed particle diameter, followed by airflow velocity, effective section diameter and, to the same degree, layer height and bed mass.
中文翻译:
通过多孔石床的气流阻力分析
通过在实验室和全尺寸设施中进行的研究,展示了通过多孔石材蓄能器床的气流阻力分析结果。Darcy-Weisbach 方程和 Ergun 方程用于确定流阻系数。发现通过省略粘度项来简化 Ergun 方程不会导致估计流动阻力的显着错误。应用尺寸分析来分析全尺寸设施中的流动阻力,并确定方程的形式和参数,允许将气流阻力计算为自变量的函数。分析表明,使用建议的方程计算出的摩擦系数和流动阻力与测量值之间存在显着的收敛性。
更新日期:2020-10-01
中文翻译:
通过多孔石床的气流阻力分析
通过在实验室和全尺寸设施中进行的研究,展示了通过多孔石材蓄能器床的气流阻力分析结果。Darcy-Weisbach 方程和 Ergun 方程用于确定流阻系数。发现通过省略粘度项来简化 Ergun 方程不会导致估计流动阻力的显着错误。应用尺寸分析来分析全尺寸设施中的流动阻力,并确定方程的形式和参数,允许将气流阻力计算为自变量的函数。分析表明,使用建议的方程计算出的摩擦系数和流动阻力与测量值之间存在显着的收敛性。