基于量纲分析的气力输送压降模型研究

量纲分析法是建立数学计算模型的一种重要的方法。以实验室气力输送数据为基础,结合量纲分析法,建立了管道压降计算准数关联式,同时将计算结果与实验数据进行对比分析,实验值与计算值总体变化趋势基本相同,偏差较小,并对其中误差相对较大的公式进行了修正,所得准数关联式对化工气力输送中压降的估算具有实际意义。

Research on the Pneumatic Conveying Pressure Drop Model Based on Dimensional Analysis

Dimensional analysis is a kind of important method to establish mathematical models. In this paper, based on laboratory data, combined with the dimensional method, a relatively simple calculation formula of the pipeline system pressure drop was established. At the same time, the experimental values and calculated values were compared and analyzed. The results show that, the deviation of calculated values is small; after the formula to cause relatively large errors is revised, it has a certain practical significance in estimating the chemical pneumatic conveying pressure drop.