| 1. | This paper mainly deals with the research on the mass diffusion , dispersion and heat conduction in fractal porous media
本论文对分形多孔介质中斐克扩散、和压力弥散和热传导过程进行了全面和系统的分析。 |
| 2. | The spectral dimension is estimated by monte cario ( random walk ) method . the calculated results show that mass diffusion in fractal media is non - homogeneous and nonlinear
上述模拟的结果使我们对分形多孔介质中的热传输规律有了更深的了解。 |
| 3. | The effects of interfacial resistance , superheating , free convection due to both temperature and concentration gradients , mass diffusion and thermal diffusion , and variable properties in both the liquid and gas - vapor regions were considered
分析中，考虑了相间阻力、液膜波动、蒸汽过热度、因温度和浓度梯度引起的自然对流、质扩散和热扩散以及物性的变化。 |
| 4. | Take the liquid - liquid transient mass diffusion for granted , experiments on fast transient mass diffusion between a nacl solution and pure water was conducted . with the experimental results , the physical mechanism of fast transient mass diffusion was revealed
以液体与液体间的快速瞬态扩散传质问题为例，对nacl溶液和纯水快速接触的瞬态扩散传质问题进行了实验研究，根据实验结果，揭示了快速瞬态分子扩散过程中质量传递物理机制。 |
| 5. | In the study of the diffusion - reaction equation , the mass diffusion was believed could cause some order - behavior in the reaction , however in shs this effect was n ' t found . it was believed due to that mass could mainly diffuse in a fixed direction in shs , the combustion wave ' s direction
由于自蔓延过程中，燃烧波基本上是以单一行波的方式蔓延过样品，因而扩散过程的方向基本是确定的单一方向，在shs过程中的作用主要是引起能量和物质的耗散，没有导致通常扩散反应可能形成的有序性。 |
| 6. | Combined heat and mass transfer by natural convection which is caused by heat and mass diffusion can be seen in nature and some processes of industry , such as evaporation and desiccation . these processes relate to aeronautics , hydraulics , mechanics , chemical engineering , oceanography and aerography
热及物质扩散引起的传热传质复合自然对流常见于自然界和蒸发、干燥等工业过程，涉及到航空、水利、机械、化工、海洋、气象等诸多领域，其流体力学和传质传热特性一直是人们研究的重点。 |
| 7. | These concrete works are the following : 1 , a new heterogonous shs model had been proposed , which first included all the relative materials characters , such as reactants particle sizes , changeable heat - conductivity and mass diffusion during shs and so on , and its chemical reaction characters , initial combustion status
具体工作如下： 1 、提出了微观不均匀的燃烧介质模型，在此基础上完成了对非均质燃烧模型数学化的研究，并提出了“燃烧基团”模式，解决了模型数学分析量大的难点。 |
| 8. | The characteristic of combined heat and mass transfer by natural convection has been the focus of researches for a long time . numerical analysis is conducted for combined heat transfer and mass transfer by natural convection on inclined surface . effects of the inclination angle and the ratio of buoyancies due to heat diffusion and mass diffusion on fluid flow and heat and mass transfer characteristics have been investigated for pr = 0 . 7 and sc = 0 . 05 - 5 . 0
本文采用数值计算方法研究了倾斜平面上的传热传质复合自然对流，求解了动量、能量及质量的完整方程，考察了热质扩散共存时倾斜平面上的流动和传热特性，着重分析了热浮力及物质扩散浮力之比b和倾斜角度对流体流动和传热传质特性的影响。 |
| 9. | According to gaseous " molecular kinetic , the mass diffusion rate is within finite value . so theoretical conclusion of mass flux ' s producing and the essential relation of flux vs . force could be drawn . with the assumption that local density states in near equilibrium and the distribution is gradual changed , the classical first pick ' s law was modified considering mass relaxation time
根据气体分子运动论对质量传播速度为有限值情况下的质量流的产生及流与力之间的本构关系作了理论推导，在假定局域浓度处于近平衡态，其分布为渐进的情况下得到了考虑质量松弛作用的经典fick第一定律的修正式。 |
