Particles of polypropene, with densities approaching that of water were used as tracer in the water system for the investigation of the flow characteristics.
在观察水在管内的流动特性试验中，用聚丙烯颗粒作为示踪粒子，其密度与水非常相近。
3
A method which Combines the numerical flux of high accurate TVD scheme with multistage method in time approaching is developed to calculate the problems of 2-d steady flow.