A mathematical model of fume diffusion in welding process was founded by considering welding arc as a spot source of generating fume and supplying the turbulent diffusion theory .

把焊接电弧作为一个发尘点源，应用 大气 湍流 扩散理论，建立了焊接过程中烟尘扩散的数学模型。

A turbulent round jet laden with spherical particles of uniform size is numerically investigated with the K - ε model of two-phase turbulence and Peskin formulae on the particle turbulent diffusion .

本文采用两相湍流的K&ε模型和颗粒 湍流 扩散的Peskin公式，对含有相同尺寸的球状颗粒的圆截面湍流射流进行了数值分析。

Turbulent energy is transported by convection turbulent diffusion and pressure diffusion .

湍能主要是通过对流、 湍流 扩散和压力扩散进行输运；

Gas thermodynamics kinetics turbulent diffusion gradient theory and statistical theory are applied to do the based analysis before modeling .

应用气体热力学、动力学、 湍流 扩散的梯度理论和统计理论，进行建模前的基础分析。

A turbulent diffusion flame exploring this technique was investigated in various conditions of different oscillating frequency through direct photographs .

利用直接摄像技术，对一个采用该燃烧方式的 射流 火焰在不同流量脉动频率下的火焰类型和结构特征进行了研究。

In the transport equation for the ( 2 ) component the pressure diffusion term is as large as the turbulent diffusion term which are both balanced by the pressure strain correlation term .

雷诺应力（2）分量输运方程中主要是压力-应变关联项与 湍流 扩散项和压力扩散项之间的平衡。

In this study a statistical cloud scheme is first introduced and coupled with a 1st-order turbulence scheme with 2nd-order turbulence moments parameterized by the timescale of the turbulent dissipation and the vertical turbulent diffusion coefficient .

文中利用湍流耗散特征时间尺度和 湍流垂直 扩散系数对湍流二阶距进行参数化，将一个统计云方案与一阶湍流闭合方案进行耦合。

The k - ε turbulent model three-gas mixing combustion model and composite radiation model were applied to numerical simulation of the turbulent diffusion flame in a gas burner with spinning air .

为研究瓦斯燃烧器的火焰特性，采用kε湍流模型、三气体扩散燃烧模型及综合辐射模型，对旋流稳焰瓦斯燃烧器 湍流 扩散火焰进行了数值模拟。

Turbulent diffusion and longitudinal dispersion are two different physical concepts .

紊流 扩散和纵向弥散是两个不同的物理概念。

Turbulent diffusion coefficient was computed by F-distribution . The model can be used to changeable depth .

计算 紊 动 扩散系数采用F分布，模型可用于变水深情况。

The model consists of a set of algorithms describing the processes of advection turbulent diffusion surface spreading vertical dispersion emulsification and evaporation .

该模型包含了一系列的数学公式来描述对流、 湍 扩散、表面扩展、铅直扩散、乳化和蒸发过程。

Based on the analytic solution of diffusion equation and the turbulent diffusion characteristic of smoke cloud the turbulent diffusion model is established .

根据扩散方程的解析解法及烟幕云团的 湍流 扩散特性，建立了烟幕云团的湍流扩散模型；

The re suits have shown that streaming effects and turbulent diffusion play a key role in gas transport .

结果表明，整流效应和 湍流 扩散具有关键作用。

On the basis of these the calculating formula of reaeration coefficient considering the coupling of molecular diffusion and turbulent diffusion is brought forward .

在此基础上提出了水体同时考虑分子扩散和 紊 动 扩散耦合的复氧系数计算公式。

Simulation of passive scalar in the turbulent diffusion combustion by Reynold Stress Model

雷诺应力模型对 扩散燃烧中守恒标量 数值模拟

On the basis of the theory of turbulent diffusion and the assumption of the isotropy of turbulence the paper analyses the concentration distributions both of the entrained air in the lower two-dimensional high-velocity chute flow and of the entrained water in the upper coexisting air flow .

文中根据在高速水流情况下，紊动为各向同性的假设，应用 紊 动 扩散理论对二元的掺气均匀水流水中含气浓度和水面上气中含水浓度分布进行了分析。

Presents a laminar flamelet model for turbulent diffusion combustion in diesel engines .

将 湍流燃烧的层流小火焰模型 应用于典型的柴油机 扩散燃烧过程。

Based on turbulent diffusion theory and the mechanism of liquid-gas interfacial mass transfer a conceptual model of turbulent re-aeration process is proposed .

本文根据 紊 动 扩散理论及气液界面质量传递过程，提出了紊动水体复氧过程的概化模型。

Pollution model includes three models : regional meteorological model turbulent diffusion model and particle pollutant model .

污染模式主要包括三个模型：区域气象模型， 近地 层 湍流模型和颗粒群 扩散污染模型。

Based on Taylor 's turbulent diffusion theorem ( 1921 ) presented in this paper were a discussion on the diffusion mechanics of marine turbulent flow and the determination of turbulent components in the ocean .

基于Taylor（1921）提出的 湍流 扩散理论，讨论了海洋中湍流的扩散机制，对如何确定海流中的湍流成份进行了论述。

Results show the effects of turbulent diffusion and particle coagulation on particle distribution qualitatively . This work provides a framework for further studies on the scalar transport in turbulent flows .

计算结果定性地反映了 湍流 扩散和颗粒凝并对颗粒分布的影响，并为进一步研究湍流中的标量输运提供了一套研究框架。

Experimental Research on Turbulent Diffusion and Dispersion for Mine Ventilation Turbulent diffusion and longitudinal dispersion are two different physical concepts .

井巷 紊流 扩散与弥散的实验研究紊流扩散和纵向弥散是两个不同的物理概念。

One weak wind conditions surface pollution mainly related to Brownian motion and turbulent diffusion under strong wind mainly associated with the air drag force .

其中弱风环境下，表面积污主要与布朗运动和 湍流 扩散相关，强风环境下主要与气流曳力相关。

A improved parameterization scheme of vertical turbulent diffusion

一个改进的 湍流垂直 扩散过程参数化方案

A numerical simulation method is presented for the turbulent diffusion flames in complex compressible flow fields of Solid Rocket Motors .

给出了一种基于小火舌模型的固体火箭发动机燃烧室内复杂压缩流场中 湍流 扩散的数值仿真方法。

Experimental data and numerical result show that the coefficient of turbulent diffusion D.

实验及数值计算结果表明，混合水箱中油滴 紊 动 扩散系数Dz沿水深而增大，呈指数分布；

To probe into the effects of the interaction of fluid mechanics and particle dynamics in the process of flame synthesis the simulation of titania nanoparticle synthesis in the turbulent diffusion flame was performed by using the commercial CFD-code FLUENT .

为了解火焰法合成纳米颗粒过程中流体力学和颗粒动力学作用过程，利用CFD商业软件FLUENT模拟了在 湍流 扩散火焰中合成TiO2纳米颗粒的过程。

Study of the reaction rate in turbulent diffusion flames

湍流 扩散火焰反应速率的研究

On the Numerical Simulation of Flow Field and Turbulent Diffusion over the Mountain and Valley Terrain

山谷地形 流场 和 扩散的数值研究

In mine mass transfer the longitudinal dispersion coefficient is by far greater than the turbulent diffusion coefficient .

在井巷紊流传递过程中，纵向弥散系数远远大于 紊流 扩散系数。