The author built the dynamics model of its constrained motion with frictional contact , and its moving stability is analyzed by singular perturbation theory 提出了管道内受限微机器人运动的动力学模型，并根据这一模型利用奇异摄动理论对微管道机器人管内运动稳定性进行了研究。
Based on large quantities of experimental data , theoretical analysis and numerical simulations ， the gas flow characteristics were investigated . the main work is stated as follows 本文通过实验研究、理论分析和数值模拟相结合的方法，就微管道内气体流动的若干问题进行了较为深入、细致的研究。
Moreover , the applicability of the incompressible friction factor is discussed . ( 3 ) the effects of surface roughness in microchannels were taken into account in terms of a roughness - viscosity function （ 3 ）将微管道表面粗糙度的影响等效为粗糙度粘性系数，提出适合于可压缩流动的二维和三维粗糙度粘性系数模型。
Microchannels , used for cooling of electronic chips , have aroused much attention . accordingly the needs of manufacturing methods for microchannels and analyzing of the heat transfer in microchannels increase steadily 微管道用于电子芯片的冷却已引起极大的关注，相应地对微管道的制造方法及传热分析的需求也与日俱增。
In two - dimensional electrokinetic focusing , a theoretical model based on kirchhoff s current law was derived and applied to predict the width of the electrokinetically focused stream 在三维定常流场混合问题方面，我们以数值模拟方式探讨电渗流在具异质性表面电荷分布之三维微管道中之混合，共有三种不同型态之混合管道被探讨。
The major works are shown as follows : ( 1 ) based on the amount of recently literature in this thesis , the development status quo and prospect are described , and introduced the key technology of micro - pipe robot ( 1 )本文在查阅和掌握大量有关文献资料的基础上，阐述了微管道机器人的发展现状及展望，并介绍了有关微管道机器人的关键技术。
Analyzing of the heat transfer in microchannel heat sinks , finite element method is used to calculate the surface temperature , fluid temperature and the total thermal resistance of microchannel heat sinks with arbitrary base heat flux distribution 在对微管道散热器进行传热分析时，本文利用有限元法在微管道底壁热量任意分布的情况下，计算了微管道的壁面温度和流体温度分布，最终得到了总热阻值。
A new design of fractal branching channel net for cooling of electronic chips is studied . based on the generation of a fractal branching net , heat transfer and the required pumping power for fluid flow in fractal microchannels and the parallel channels are compared 论文最后介绍了一种分形微管道网络，在给出其构造过程的基础上，利用有限元法将其传热能力、所需泵送功率与平行微管道网络进行了比较。
( 2 ) the flaws on the one - dimension ( 1 - d ) compressible isothermal average - friction - factor were indicated . a friction factor computation method was proposed , which is not only suitable for compressible flow but also easy to achieve the average wall shear stress （ 2 ）指出关于微管道内已有的一维可压缩等温流动的平均阻力系数确定方法的不足之处，并提出了一种便于实用的可压缩流动平均阻力系数的确定方法。
According to the very characteristics of certain biochemical reaction , immobilization of proteins on channel wall for inhomogeneous reactions , channel network design for homogeneous reactions and the advantages of performing biochemical reactions on microfluidic chips are investigated in details 对非均相反应的蛋白质在微管道中的固定技术、均相反应的管道设计技术以及在微流控芯片上集成生化反应的优越性等做了详细的讨论。
