So the simulations of flow and mass transfer processes for PEMFC is very important.
因此，对PEMFC 内的流动和传质过程的数值模拟研究，具有重要的工程意义与学术意义。
Slagging is a very complicated physical and chemical process which deals with several scientific courses such as combustion, multi-phase flow, heat and mass transfer etc.
结渣过程是个十分复杂的物理化学过程，其中涉及燃烧、气固多相流、传热与传质等多门学科。
A new mathematic model based on analysis of liquid flow, mass transfer and heat transfer is proposed to describe wiped film molecular distillation.
在对刮膜式蒸馏器蒸发表面流体流动和传质传热进行分析的基础上，研究了分子蒸馏过程，并建立了数学模型。
It is important to obtain the wavy film flow solution for the purpose of heat and mass transfer calculations.
为了计算波动降膜传热传质，求解得到波动膜流解是非常重要的。
The supercritical fluid has the following unique characteristics: low viscosity, high density, better performance of flow, mass and heat transfer, dis solution and so on.
前言：超临界流体具有黏度低、密度大，有较好的流动、传质、传热和溶解性能等特性。
A planar model of air and water flow on metal fill surface was set up to investigate heat and mass transfer performance of air conditioner.
建立了填料塔的二维传热传质模型，考虑了因水蒸发或凝结而引起的水的质量变化和空气的质量变化。
Macroscopic fluid flow and heat and mass transfer should be taken into account for the continuous thin slab casting process.
薄板坯连铸工艺应综合考虑传热、流动与传质宏观传输现象。
The fluid flow and mix are the basic of mass and heat transfer in reactors, and also a reference to the design for reactors.
流体流动与混合是反应器中传质、传热的基础，是反应器设计的依据。
The mass conservation equation, energy conservation equation, flow equation and heat transfer equation are described in this paper.
列出了描述蒸汽发生器模型的质量、能量守恒方程以及流量方程和传热方程。
The perimeter averaged heat transfer coefficients depend on heat flux, mass flow rate, quality and saturated pressure.
截面平均换热系数则与质量流速、热流密度、质量干度和蒸发压力密切相关。
A mathematical model was developed to investigate mass flow rates in the heat transfer pipes of the air side heat exchanger with and without distribution pipes for an air source heat pump.
建立分液管和换热器的数学模型，对空气源热泵风侧换热器在有、无分液管的情况下的各盘管中质量流量分配问题分别进行研究。
Instantaneous mass transfer of gas-microdroplet two-phase flow is one of the most important procedures in the field of chemical engineering, colloid science and environment science.
气雾两相流瞬态传质现象广泛存在于多相反应器、燃烧、空气污染物控制和大气运动等化工、环境和气溶胶科学领域。
The 5% suspension always shows better cooling performance than water with lower wall temperatures and enhanced heat transfer coefficient within the whole range of mass flow rates.
质量浓度为5%的悬浮液在在整个质量流量范围内总是表现出比水好的冷却性能，它对应的是更低的壁面温度以及更好的传热系数。
The heat transfer models established in the paper have important reference value to establishing the complex models that consider comprehensively heat transfer, mass transfer and flow.
文中建立的传热模型对于今后建立综合考虑了传热传质及流动的复杂模型具有重要的参考价值。
Criterion for gas flow pressure loss is presented for rotating liquid film heat and mass transfer device.
提出了旋转液膜气液传热传质设备的气体压力损失的准则关系式。
Two phase flow, mass transfer performance and design calculation of packed extraction tower were introduced in this paper. It was very important to design and operation of packed tower.
系统地介绍了填料抽提塔的两相流动及传质特性、设计计算，对填料塔的设计和操作有一定指导意义。
The model includes the fluid flow, heat and mass transfer equations.
模型中包括了流动、传热和传质方程。
By analyzing the volume mass-transfer coefficient, the optimal operating flow-ratio and packed density were obtained.
通过考察体积传质系数，确定了纤维液膜萃取分离器的最佳填充密度和最佳流量比。
The oxygen mass transfer coefficient increases at the beginning and then decreases with the augment of carrier content, and increases with the augment of air flow rate and liquid flow rate.
氧传质系数则随着载体含量的增加先增后减，随着气流量和液流量的增大而增大。
The axial and radial distribution of flow, heat and mass transfer of gas-solid two phase is very uneven in the reactor.
提升管反应器内气固两相在轴向和径向上都存在着流动、传热与反应的不均匀分布。
RESULTS: Coefficient of mass transfer was slowly increased as the extraction temperature elevated, and was in accord with flow and in contrast with pressure.
结果本法在萃取川芎挥发油得到的传质系数随着温度的升高略为增大，随着流量的增大而增大，随着压力的增大而减少。
The equilibrium water content of the solids for drying, the number of mass transfer units for gas absorption and mass flow rate for heat transfer system were obtained using MATLAB.
用MATLAB计算食品过程中的物料平衡含水量、气体吸收的传质单元数和传热过程的调节，研究基于MATLAB的非线性方程、非线性方程组的求解和数值积分功能的应用。
It has advantages such as reasonable flow channel structure; low pressure drop; high processing ability, high mass transfer efficiency, good design flexibility and wide applicability.
它的特点是流道结构合理，阻力降小，处理能力大，传质效率高，设计弹性大，适用范围广。
The computational results show that deep aeration can get a better gas-liquid mix, and a higher gas flow rate can improve the mass transfer between two phases.
结果表明：深层曝气能够让气液得到更充分的混合；提高空气流量（即气泡流速），也能大大改善气液混合。
In addition, the overall mass transfer coefficient and the flux increased with the increasing flow rate under similar temperature.
另外，同一温度下，增加进料流量，传质系数增大，通量增加。
In this study, adsorption mass transfer process of phenol by soil particles was investigated by means of dynamic method in a water-saturated fine and column under vertical flow of phenolic effluents.
用动态法研究了饱水细沙土柱中含酚废水在垂直流动情况下，土壤颗粒对苯酚的吸附传质过程。
The movement of high temperature smoke in a fire road during mine fire was a three dimensional unsteady flow which is accompanied with heat and mass transfer.
矿井火灾时期，火源巷道内高温烟流运动为三维非定常的流动及传热传质过程。
The movement of high temperature smoke in a fire road during mine fire was a three dimensional unsteady flow which is accompanied with heat and mass transfer.
矿井火灾时期，火源巷道内高温烟流运动为三维非定常的流动及传热传质过程。
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