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两流体模型
相关语句
  two-fluid model
     Study on Application of Two-Fluid Model in Narrow Annular Channel
     两流体模型在环形窄缝内的应用研究
短句来源
     The effect of bubble diameter on entrainment concentration forecast result in two-fluid model
     两流体模型中气泡粒径对掺气浓度预测结果的影响
短句来源
     A two-equation K-ε turbulent model has been developed for predicting solid-liquid two-phase flows based on the two-fluid model.
     基于两流体模型,建立了固液两相流中更一般的K—ε双方程湍流模型。
短句来源
     A two -equation K-ε turbulence model has been developed for predicting solidliquid two-phase flows based on the two-fluid model.
     基于两流体模型,建立了固液两相流中K—ε的双方程湍流模式。
短句来源
     The results showed that for the two-fluid model the deviation of 90% model prediction was under ±20%. Furthermore it could give reasonable pressure distribution along the tube length.
     结果表明: 两流体模型90%的流量计算值与实验值偏差在±20%以内, 并能合理预测压力的沿程分布;
短句来源
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  two fluid model
     Magnitude Analysis of Two Fluid Model in Two Phase Natural Circulation Systems
     两相自然循环两流体模型的量级分析
短句来源
     It is one of the few system analyse codes which use two fluid model to treat possible to be run in different compute systems, IBM version of TRAC-PF1 code, imported from USA National Energy Software Center, is immigrated to CDC NOS/ VE system and SUN workstation . The differences in computer languages form IBM 370 to CDC NOS/ VE and to SUN workstation are qtodified properly .
     它采用两流体模型处理两相流动,是目前核反应堆系统分析软件中模型比较完善、简化较少的少数软件之一。 为了充分利用国外这一先进的系统软件和国内现有的计算设备,将从美国引进的IBM版TRAC-PF1程序经修改移植到了CDCNOS/VE系统及SUN工作站上,对不同机器在FORTRAN语言及汇编语言上的差别进行了修改。
短句来源
     Based on the concept of “Two Fluid Model”, a predictive two phase flow model, including continuum, momentum, and kinetic fluctuating energy transport equations, are derived starting with Boltzmann integral differential equation in this paper. Here, the stress and the viscosity of solid phase are expressed as functions of solid kinetic fluctuating energy.
     本文基于两流体模型,从Boltzmann统一微分方程出发,推导出了颗粒相的连续方程,动量方程和湍动能方程,并将粒子的切应力和粘性系数表达成颗粒湍动能的函数,用改进后的混合长度模型来描述气相湍流。
短句来源
     Eulerian-Eulerian two fluid model was applied to investigate effect of draft-tube structure on(gas-)liquid flow in airlift loop reactor.
     使用欧拉-欧拉两流体模型研究了导流筒结构对气升式环流反应器内气液两相流动的影响。
短句来源
  “两流体模型”译为未确定词的双语例句
     ANON-EQUILIBRIUM FLUID MODEL OF VAPOUR-LIQUID CRITICAL TWO-PHASE FLOW SONG JIYUANCHEN TINGKUAN
     汽液两相临界流动的热力学非平衡两流体模型
短句来源
     Based on operation process parameters of tundish for two strand concasting(1 500) mm×250 mm slab,using Eulerian multiphase model,porous media model and Larangian random-trajectory model,the characteristics of molten steel flow and inclusion moving trace in tundish with turbulence inhibitor and gas blowing curtain technology have been simulated mathematically,and the total removal ratio of inclusion in steel was calculated statistically by Monte-Carlo method.
     根据二流连铸1 500 mm×250 mm板坯时中间包的操作工艺参数,采用欧拉两流体模型,多孔介质模型和拉格朗日随机轨道模型,模拟计算了采用湍流控制器和气幕挡墙技术的中间包内钢液流动特性和夹杂物的运动轨迹,并用Monte-Carlo法统计了夹杂物的总去除率。
短句来源
     This model has been used to evaluate the velocity fields of gas and liquid phases, as well as phase distribution between elements in rod bundles by simulating 1/4 zone of the channel and mixing vane of spacers.
     在计算中,采用了考虑界面横向效应的两流体模型,用该模型计算模拟了通道的1/4区域和定位格架交混叶片,获得了流体区域的两相流速和相分布;
短句来源
     According to the structure and the operating parameters of tundish at some plant,molten steel flow field in the tundish with gas blowing at the bottom was mathematically simulated using Eulerian-Eulerian multiphase model.
     根据实际中间包的操作工艺参数,采用欧拉-欧拉两流体模型,用数值模拟法模拟计算了中间包底吹对钢液流动的影响。
短句来源
     Using two-flow model, small perturbation theory and solvable conditions of one-order linear equations, a dispersion equation of pressure wave in horizontal air-liquid bubbly flow was proposed.
     利用两流体模型、小扰动原理和线性一阶齐次方程组有解的条件,得到了气液泡状流型下的压力波色散方程。
短句来源
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  two-fluid model
The mixture is described by a two-fluid model with an incompressible viscous carrier phase.
      
The curve of Rs(T) in both the superconducting and normal states of YBa2Cu3O6.95 is well described by a two-fluid model with the electron-phonon mechanism of quasiparticle relaxation.
      
The cross invariants in magnetohydrodynamics are limits of special combinations of topological invariants of the two-fluid model.
      
Experimental data of Zs(T) and σs(T) are compared with calculations based on a modified two-fluid model that includes a temperature-dependent quasiparticle scattering and a unique temperature variation of the density of superconducting carriers.
      
Several systems described by the two-fluid model are considered.
      
更多          
  two fluid model
Using the two fluid model, modified Londons equations have been obtained for the type II superconductors in the Schubnikov state (Hc1>amp;lt;H>amp;lt;Hc2).
      
The microwave data are described in the context of a modified two fluid model.
      
On the two fluid model in multiple production of mesons
      
The mechanism of multiple particle production in high energy nucleon-nucleon collisions is investigated using the two fluid model.
      
The data is analyzed within a generalized two fluid model, and the fitted London penetration depth at 0 K increases with decreasing film thickness.
      
更多          


This paper presents a two-fluid model applied in thermal hydraulic transient analysis of nuclear reactor cores. This model involves separate partial differential equations expressing conservations of mass, momentum, and energy for each individuel fluid phase, it does not require the phases to move with the same velocity or to have equal temperatures. CASTA-1 code using this model solves the three-dimensional equations in rectangular coordinates. This code offers the choice of either pressure or velocity boundary...

This paper presents a two-fluid model applied in thermal hydraulic transient analysis of nuclear reactor cores. This model involves separate partial differential equations expressing conservations of mass, momentum, and energy for each individuel fluid phase, it does not require the phases to move with the same velocity or to have equal temperatures. CASTA-1 code using this model solves the three-dimensional equations in rectangular coordinates. This code offers the choice of either pressure or velocity boundary conditions at the top and bottom of the core. Since the CASTA-1 code also includes the treatment of transverse boundary conditions, it not only can be applied in core-wide analysis, but also in subchannel analysis. The comparison of the computational results for reactor core of PWR and BWR are also presented.

本文给出了用于核反应堆堆芯热工水力瞬态分析的两流体模型。该模型分别列出每一相的质量、动量和能量差分守恒方程,不需要两相有相同的速度和温度。按该模型编制的CASTA-1程序能求解直角座标系的三维方程组。该程序允许选择堆芯顶部和底部的压力或速度边界条件的任意组合。由于该程序还考虑了测边界条件的处理,因此它不仅能用于全堆芯分析,还能用于子通道分析。文中还给出了压水堆和沸水堆堆芯计算实例的比较。

A numerical computional method with two-way coupling is presented in this paper to calculate the friction loss of solid-liquid two-phase flows in vertical pipes. In terms of the numerical computations,the effects of particle diameter,density,volumetrical concentration of solid phase,and the velocity of liquid phase on the friction loss are studied. The results show that the friction loss increases with the increase of the particle diameter,density, volumetrical concentration of the solid phase and the velocity...

A numerical computional method with two-way coupling is presented in this paper to calculate the friction loss of solid-liquid two-phase flows in vertical pipes. In terms of the numerical computations,the effects of particle diameter,density,volumetrical concentration of solid phase,and the velocity of liquid phase on the friction loss are studied. The results show that the friction loss increases with the increase of the particle diameter,density, volumetrical concentration of the solid phase and the velocity of liquid phase. Additionally, the agreement between the computed results and experimental values is good.

本文运用两流体模型,提出计算垂直管道中固液两相流动摩擦损失的“双向”耦合数值方法。通过数值计算,研究固相颗粒直径、密度、浓度和液相速度对摩擦损失的影响。计算结果表明,摩擦损失随固相颗粒直径、密度、浓度和液相速度的增大而增加。本文的计算结果与试验值基本吻合。

The gas holdup and linear liquid velocity in an internal loop air - lift reactor (ALR) under a wide range of operating conditions were determined by means of the electrochemical method. The energy equation was derived on the basis of the one-dimensional two - fluid model of ALR presented in Part I of this series. The main characteristic parameters of fluid flow in both internal and external loop reactors, such as liquid velocity, gas holdup and the partition of dissipation of input energy were analysed in detail....

The gas holdup and linear liquid velocity in an internal loop air - lift reactor (ALR) under a wide range of operating conditions were determined by means of the electrochemical method. The energy equation was derived on the basis of the one-dimensional two - fluid model of ALR presented in Part I of this series. The main characteristic parameters of fluid flow in both internal and external loop reactors, such as liquid velocity, gas holdup and the partition of dissipation of input energy were analysed in detail.

建立了一直径为0.186m、高3m的内环流气升式反应器。通过电化学方法测得了反应器中的气含率和速度。本文以文(Ⅰ)所得气升式环流反应器的一维两流体模型为基础,推导出了反应器的能量方程。分析了反应中的功耗分配规律,并以此对反应器中的流动规律作了较合理的解释。本文还从理论和实验上较全面地讨论了反应器操作参数和结构参数对气含率和循环液速等的影响。

 
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