搜索结果: 136-150 共查到“化工流变学”相关记录250条 . 查询时间(3.987 秒)
水平直圆管内油气两相流的压降
水平管 油气两相流 流型 摩擦阻力压降
2009/6/9
对水平放置的内径为40 mm的有机玻璃管内的油气两相流进行了详细的实验研究，实验工质为46＃机械油和空气.油相和气相折算速度分别为0.051～0.612 m•s-1和0.024～50.64 m•s-1，实验在室温下进行.采用Lockhart-Martinelli关联方法对各典型流型下的实验数据进行了整理，结合流动的具体情况对其中的关联参数C进行了重新定义，提出了基于典型流型...
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mixed convection flat plate temperature optimal homotopy asymptotic method
2010/10/11
The problem of steady incompressible mixed convection flow past vertical flat plate has been considered. The velocity and temperature equations for this problem are reduced to set of non-linear ordina...
湍流泡状流混合层流动的PIV测量
泡状流 雷诺应力 PIV
2009/6/5
在单相实验的基础上，使用PIV对不同位置注入气泡的泡状流湍流混合层流动进行实验研究。混合层高低侧流速比为4∶1，基于两股流体速度差和管道水力直径的Reynolds数范围为4400～158400。与单相相比，气液两相混合层流动脉动速度的测量结果表明，在低Reynolds数时气泡的加入会增强混合层的速度脉动，但随着Reynolds数的增大气泡的加入反而会减弱速度脉动。雷诺应力集中在隔板下游一个较窄的区...
将考虑拟平衡状态下颗粒与流体相互作用的附加力添加在基于双流体理论的动量方程中的数学模型，用于预报三维液固流化床内流体动力学特性。该模型主要特点是将表征颗粒离散属性的特征长度视为颗粒直径的同一数量级且只需曳力系数一个关联式来封闭控制方程。在商业软件CFX4.4平台上，通过增加用户自定义子程序考察了液体速度突变后水-颗粒（密度3000 kg·m-3，粒径为2.5×10-3 m）体系在长0.1 m、宽0...
将考虑拟平衡状态下颗粒与流体相互作用的附加力添加到基于双流体理论动量方程的数学模型中，用于Geldart A类物料散式流态化和B类物料鼓泡/床层塌落特性的三维数值模拟。该模型主要特点是将表征颗粒离散属性的特征长度视为颗粒直径的同一数量级且只需曳力系数一个关联式来封闭控制方程。在商业软件CFX4.4平台上，通过增加用户自定义子程序模拟了长0.2 m、宽0.2 m和高0.5 m流化床内瞬态流动特性。为...
北京化工大学化学工程学院化工原理课件 5.5 对流传质
北京化工大学化学工程学院 化工原理 课件 对流传质
2009/5/4
北京化工大学化学工程学院化工原理课件 5.5 对流传质。
北京化工大学化学工程学院化工原理课件第一章 流体流动 1.6 流速与流量的测量。
A Numerical Study on Fully Developed Fluid Flow and Heat Transfer in a Spiral Finned Tube
fluid flow and heat transfer numerical simulation finned tube
2009/4/28
In this paper, the standard k-ε two-equation model is adopted to numerically simulate fully developed fluid flow and heat transfer in a spiral finned tube within a cracking furnace for ethylene manu...
A New Procedure to Solve the Non-Linear Reaction-Diffusion Equation
reaction-diffusion equation solution similarity transformation
2009/4/28
A New Procedure to Solve the Non-Linear Reaction-Diffusion Equation.
A new model for the surface tension of binary and ternary liquid mixtures based on Peng- Robinson equation of state
surface tension liquid mixture Peng-Robinson equation of state
2009/4/28
A new model for the surface tension of binary and ternary liquid mixtures based on Peng-
Robinson equation of state.
A Statistical Thermodynamic Model of Vapor-Liquid Interfacial Tension for Liquid Mixtures at High Pressure
interfacial tension liquid mixture critical points
2009/4/28
A Statistical Thermodynamic Model of Vapor-Liquid Interfacial Tension for Liquid Mixtures at High Pressure.
Demulsification of Emulision Liquid Membrane by Wetting Coalescence Materials
demulsification emulsion wet coalescence cadmium extraction
2009/4/23
Demulsification of emulsified water-in-oil droplets was worked out with the employment of wetting coalescence materials. Demulsification is carried out in conventional stirred- column and packed-colu...
Effect of Sudden Increase of Solid Feed Rate on the Arching in Hoppers Connected to a Standpipe with Interstitial Gas Flow
moving-bed standpipe width of arching model
2009/4/22
In this paper, a model is proposed for the prediction of the width of arching in hoppers resulted from sudden changes in solid feed rates. Such changes in solid feed rate usually come from the colli...
Isobaric Vapor-Liquid Equilibria for 2-Methylphenol-2,6-Dimethylphenol-2,4,6-Trimethylphenol Ternary System
vapor-liquid equilibrium 2,6-dimethylphenol binary system ternary system
2009/4/21
Isobaric Vapor-Liquid Equilibria for 2-Methylphenol-2,6-Dimethylphenol-2,4,6-Trimethylphenol Ternary System.
Interfacial Shear Stress of Stratified Flow in a Horizontal Pipe
interfacial shear stress stratified flow laser doppler velocitometer
2009/4/21
Experimental data are presented for the void fraction and theshear stresses of stratified gas-liquid flow in a pipe. A new techniquewas used to measure the interface shear stress. The interfacial sh...