Mechanism Study Into The Transport Process Of Micro-object In Static Fluid System

This paper studies the motion characteristics and transport mechanisms of micro-object in static flow field. combined with the existing research methods and results,the research object can be simplified to be micro-particles, then theoretical andexperimental study into the motion characteristics and transport mechanism of micro-object in static flow field can be carried out.For the theoretical study, in the present researches, the transport behavior ofmicro-particles based on its velocity,which associates with stress. Based on thevelocity function, the net flux of a control-volume in the two dimensional fluid fieldwas combined with the classic expressions of Fick Law, then the transport coefficientcan be expressed. Some certain factors (such as particle size, surface tension, etc.)that may influence the transport process of micro-particle in flow field are taking intoaccount. All these researches are to make a foundation for the subsequent researchwork.For the experimental research, based on digital holographic image processingtechnology, a digital holographic image processing system is established to observethe transport process of micro-particle in flow field. After the image and dataprocessing with software, it is obvious that the motion process can be observed usingthe experimental system. All these above researches are to make a foundation for thefollowing researches on the observation on transport process of microscale particles inthe complex flow field.Based on the existing theoretical and experimental researches in this paper, it canbe indicated that the researching method is feasible to study the motion characteristicsand transport mechanism micro-particles in the flow field. All these results providethe foundation for the follow-up research.