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1)  momentuiru heat and mass transfer
动量、热量和质量传递
2)  passage of heat and mass
热量与质量传递
1.
Successive equation about passage of heat and mass used in ventilating system of grain storage is obtained through the theory of passage of heat and mass,the law of mechanics and the principle of volume average;and thus realizes the purpose for systemization and theorization of scientific grain storage.
运用热量与质量传递理论、力学定律和体积平均原理,通过深入、系统地研究,得出了粮食通风系统数学描述的热量和质量传递的连续方程,从而把通风储粮技术提到系统化、理论化和科学化的高度。
3)  mass and heat transport
质量与热量传递
1.
In the present study,the multilayer model(MLM)was used to describe the intraparticle mass and heat transport phenomena of polypropylene produced by propylene polymerization with the Ziegler-Natta catalyst in a loop reactor.
针对环管反应器中Ziegler-Natta催化剂催化的聚丙烯颗粒增长过程,采用多层模型建立了聚丙烯颗粒内部的质量与热量传递预测模型。
4)  heat transfer
热量传递
1.
The application of Mathematica to the solving of the mathemalical problems in the process of heat transfer
用Mathematica解热量传递过程中的数学问题
2.
The effective thermal conductivity model and coupled model were developed for simulating the influences of fluid flow on heat transfer and solidification in continuous casting process.
综述了在连铸数值模拟过程中,为评估流体流动对铸坯热量传递和凝固过程影响所开发的有效导热模型和耦合模型。
3.
Presents a state of the art survey in the field of modeling of heat transfer of the arc in gas metal arc welding.
对MIG电弧焊焊接电弧热量传递的数学模拟这一领域进行了综述 ,分析了对电弧进行数学建模的发展过程及模型中存在的问题 ,讨论了对焊接电弧热量传递进行数学模拟的发展趋势。
5)  mass transfer
质量传递
1.
Global simulation of silicon crystal Czochralski growth Ⅱ. Characteristics of mass transfer;
硅单晶Czochralski法生长全局数值模拟Ⅱ.质量传递特性
2.
As foundation of chromatography separation,chromatography models are very helpful for describing mass transfer and adsorption in this progress.
色谱模型是研究色谱分离过程的基础,对于描述该过程中质量传递动力学和吸附过程具有非常重要的帮助。
3.
The efficiency of dissolving oxygen of VTBR is su- perior to aerobic biologic aeration at normal pressure due to its higher mass transfer rates.
类似于多个深井曝气池串联起来运行的 VTBR 反应器具有多种其他反应器不具备的优点,在多个行业(化纤,啤酒,生活污水)废水 的工程中取得了成功,该反应器具有较高速率的质量传递,使得溶解氧的效率要比目前的常压耗氧生物曝气法要高得很多;正确的设计足保证 工程正常运行成功的关键。
6)  momentum transfer
动量传递
1.
This paper is mainly based on momentum transfer of solid particles during acceleration,and ascertains the qualities and velocities changes of water and solid particles with each other during momentum change,including outside factors influencing their momentum change.
以固体颗粒在加速过程中发生的动量传递为出发点,确定了相互发生动量交换的清水、固体颗粒的质量及其速度变化量,及影响其动量变化的外界因素。
2.
In addition, the momentum transfer on the V-grid tray and its effect on clear liquid height and hydraulic gradient cross tray are discussed.
通过对塔板上气、液两相间的动量传递进行分析,讨论了动量传递对液面落差和清液层高度的影响。
3.
With the dimentional analysis, the fluid momentum transfer resistance criterion(R_L~*, RL), the heat transfer resistance criterion(R_H~*,R_H), the mass transfer resistance criterion R_M~*, R_M [*: denotes unsteady state], the buoyance resistance criterion R_(by) and the liquid membrane energy criterion E_σ were derived from the principal physical parameter of ILM.
应用因次分析法,由ILM的主要物理参数导出了流体动量传递阻力准数R_L~*、R_L,热量传递阻力准数R_H~*、R_H,质量传递阻力准数R_M~*、R_M(*代表非定常),浮阻准数R_(by)和膜能准数E_σ。
补充资料:动量传递理论
分子式:
CAS号:

性质:于1925年由Prandtl提出的。它是二维流动条件下湍流黏度ε与平均流速 之间关系的理论。此理论考虑到在湍流流动时由于流速的不规则变化而引起的动量传递量变化的问题。如果将湍流条件下流体流速的不规则变化与气体分子的不规则热运动进行对比,就可以导出与气体分子平均自由程相当的“混合长度”(mixing length)的概念。将此概念加以发展,就可以导出下述的用以表达湍流黏度ε的式子:,为x方向上流体的平均流速,它仅为距离y的函数;lm为根据动量传递理论导得的混合长度。在实际计算中,必须根据实验将lm表示成为y的函数形式如下:            lm=kyk为Prandtl所假定的一个常数。将动量传递理论应用于固体壁面附近的湍流运动时,它能够与实验结果很好地符合。

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