流体动力学

Hydrostatics - Archimedes' Principle - Fluid Dynamics - What Makes Your Boat Float?

流体静力学-阿基米德原理-流体动力学-是什麼使你的船浮著？

Biot-Savart law is used to solve axial magnetic field generated by azimuthal current, this can avoid simulation difficulties due to expansion of simulation regions.

基于FLUENT软件对流体方程和电磁以及电子能量方程进行了耦合求解，从而实现了对真空电弧磁流体动力学模型的仿真。

Based on the previous MHD duct flow experiments, the law of mass conservation, the law of charge conservation and the Lorentz force as well as the principle of equivalent circuit, a simplified theoretical method to analysis MHD effect of duct with FCI is developed.

基于先前的普通管道中的MHD效应的实验结果和质量守恒定律（或液态流体不可压缩原理）、洛仑磁力定律和电荷守恒定律，再利用有源网络等效方法，发展出一种简化而有效的分析带通道插件管道的磁流体动力学效应的方法。

Computational fluid dynamics was used to solve the problem in complex fluid by digital mode.

计算流体动力学是通过数字方式解决复杂的流体问题的一种研究方法。

Hydrodynamics, the study of fluids in motion, is a subject about which multi-volume textbooks have been written.

流体动力学，研究流体的运动，是可以写成许多卷书的一门学科。

On the basis of the flow characteristics of the multiphase flow and the principles of electromagnetic imaging well logging, how to analyze the re.constructed flow images and the methods to obtain the hydrokinetics parameters which include the hold- up of each phase after identifying the flow regimes and the velocity calculated by cross-correlation are presented.

根据油井内多相流体的流动特征和电磁流动成像测井原理，解析测量重建的流动图像，在分辨流型的基础上得到各相持率，然后通过相关计算获得各相的流动速度，从而获取流体动力学参量。

Methods By using the theories of conservation of mass, of energy, Darcy's law and hydrokinetics, the mechanical model of oil layer fluid under the function of low frequency vibrated wave was studied. With the combination of indoor experiment and the numerical simulation, the effect of downhole low frequency vibration on oil viscosity, interfacial tension, capillary pressure, producing water cut and the rising velocity of it was studied quantitatively.

应用质量守恒定律、能量守恒定律、达西定律、流体动力学等基本原理研究了低频振动波作用下油层流体的数学模型，将室内实验和数值模拟技术相结合定量地研究了低频振动对原油私度、界面张力、毛管压力、产水率及产水率上升速度的影响。

In most problems in fluid dynamics the latter approach is possible, which means that the fluid can be regarded as a continuum—that is, a hypothetically continuous substance.

在流体动力学中多数问题可通过后一种方法解决，这意味着流体可被看做是一种连续体——也就是说，流体是一种假设的连续性物质。

The main contents are as follows:Based on the vortex theory and the hydrodynamic basic equations, taking account of the viscosity effect, the expressions of the tangential speed...

主要内容包括：在涡运动理论的基础上，考虑流体的粘性效应，从流体动力学基本方程出发，分析推导了旋流分离器内流体的切向速度和切向应力的分布表达式，定性讨论了旋流分离器外壁的转动对切向速度和切向应力的影响。

A mathematical model of airlift-loop reactor was developed with the two-fluid model and the theory of two-phase flow.

采用双流体模型和气液二相流体动力学理论建立了气升式环流反应器流体流动的数学模型，在此模型的基础上利用溶质渗透理论和各向同性湍流理论建立了局部液相体积传质系数数学模型。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎