Fundamental Experimental and Modeling Approaches to Pneumatic Transport

首席研究员提出气动输送的基础、实验和建模方法，为扩大规模和更有效的操作提供更坚实的基础。实验探索的自变量是：几何形状（1英寸、2英寸和4英寸管径的垂直、水平和倾斜测试段）；粒径（2-1000微米）；颗粒密度（1000-7600 kg/m）；不同的流速。要测量的因变量包括：粒子速度、粒子速度传感器用于簇大小的功率谱密度函数、压力波动、沿管道圆周的压力分布、压降以及将被记录在录像带上的可视观察结果。这些基本信息将用于建模工作，以解释发现和项目规模。

The principal investigator proposes fundamental, experimental, and modelling approaches to pneumatic transport to provide a firmer basis for scale-up and more efficient operation. The independent variables to be explored experimentally are: geometry (vertical, horizontal and inclined test sections of 1, 2, and 4-inch diameter pipes); particle size (2-1000 microns); particle densities (1000-7600 kg/m); and different flow rates. The following dependent variables are to measured: particle velocity, power spectral density function of the particle velocity sensor for cluster sizing, pressure fluctuation, pressure distribution along the circumference of the pipe, pressure drop, and visual observations which will be recorded on videotape. This basic information will be utilized in a modeling effort to interpret the findings and project scale-up.