查询词典 fluid dynamics

These features of LBM have been attracting many scientists and engineers from various of fields. To date, the applications of LBM have achieved great success in multiphase flow, porous flow, suspending particle flow, reaction flow, magnetohydrodynamics, and biomechnology, etc, and the LBM has become an important method for computer simulation of fluid dynamics.

LBM的这些特点吸引了众多领域中的学者和工程技术人员，目前LBM已经在多相流、多孔介质流、悬浮粒子流、反应流、磁流体力学和生物力学等领域取得了很大的成功，已成为流体动力学问题仿真模拟的一类重要的方法。

In this paper, a fluid dynamics model of hydaulicline including frequency-dependent friction is developed andits approaximate expression is got. Two mathematical treat-ments for the approximation are considered.

l引言 由于在液压系统动力学中，液压管道的动力响应有重要影响，所以建立管道的动态模型，特别是准确反映液压管道内各变量间传递关系的分布参数模型，就成为一个重要问题。

The numerical simulation for microbus SC6350 is accomplished with the computational fluid dynamics software of STAR桟D.

并采用计算流体力学软件STAR-CD对微型面包车SC6350进行了多种工况的仿真计算。

Tabletop chemistry takes a photogenic turn in this winning microphotograph by John Hart of the University of Colorado, who specializes in fluid dynamics.

借着易上镜的机会，由科罗拉多大学专攻流体动力学的John Hart拍摄的桌面化学，获得了显微镜摄影奖项。

"We're looking now at a time frame of something like 2065," said John Austin, a computer modeller at the Geophysical Fluid Dynamics Laboratory in Princeton, New Jersey.

约翰·奥斯汀是新泽西州普林斯顿的地球物理流体力学实验室的电脑模型师，他说："我们正在研究从现在到 2065 年等的时间段。"

This make it difficult to know the essence of fluidized beds. In order to viewthe motion behavior of a single particle in a fluidized bed in a reasonable cost, thegas-solid flow in a fluidized bed is modeled by a combined approach of discrete particlemethod and computational fluid dynamics, in which the motion ofindividual Particles is obtained by solving Newton\'s second law of motion and gas flowby the Navier-Stokes equation based on the concept of local average.

为了用数值模拟方法来弥补传统实验方法的不足，达到从单个颗粒的尺度上来研究流化床中颗粒的运动和气体流场的剧烈变化情况的目的，本论文建立了基于用Newton第二定律计算单个颗粒运动轨迹的离散颗粒法和基于区域平均值的计算流体动力学方法的数学模型的建立和求解过程；并依据Newton第三定律建立了DPM模型和CFD模型的耦合模型，编写和调试了DPM和CFD的耦合程序。

ABSTRACT Computational fluid dynamics is a combinative production of modern hydrodynamics, numerical mathematics and computer science, and is a new science with powerful vital force.

计算流体动力学是近代流体力学，数值数学和计算机科学结合的产物，是一门具有强大生命力的边缘科学。

Computational fluid dynamics is a combinative production of modem hydrodynamics, numerical mathematics and computer science, and is a new science - with powerful vital force.

计算流体动力学是近代流体力学，数值数学和计算机科学结合的产物，是一门具有强大生命力的边缘科学。随着各种CFD技术的迅速发展，它在许多行业内得到普遍的推广和应用。

Cyclones;Computational Fluid Dynamics;The Model Of Onflow;Numerical simulation

重介质旋流器；计算流体力学；湍流模型；数值模拟

The control equation for computational fluid dynamics is also derived, where standard k-ε model is used for onflow.

其中湍流模型采用标准k-ε方程，计算网格采用三角形非结构网格。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。