Fundamental Experimental and Modeling Approaches to Pneumatic Transport

首席研究人员提出了气力输送的基本、实验和建模方法，为扩大规模和更有效地运行提供了更坚实的基础。有待实验探索的自变量是：几何形状(1、2和4英寸直径管道的垂直、水平和倾斜试验段)；颗粒尺寸(2-1000微米)；颗粒密度(1000-7600公斤/米)；以及不同的流速。测量的从属变量有：粒子速度、粒子速度传感器的功率谱密度函数、压力波动、沿管道圆周的压力分布、压降和将被记录在录像带上的目视观测。这些基本信息将被用于建模工作，以解释调查结果和项目扩大。

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.