查询词典 diffusivity equation

Based on this local composition model,a new correlation equation for the prediction of the diffusivity in binary l.

今提出了基于局部组成的扩散系数模型，以估算Maxwell-Stefan扩散系数随浓度的变化。

In order to reduce error of Nu number at large Ra number and thermal diffusivity, we analyze truncation error of corresponding heat-transfer equation and introduce an adjusting parameter in the equilibrium distribution function.

针对一二阶精度模型在Ra数极高或热传导系数极大时，Nu数的计算与经验值相比出现较大偏差，分析LBM对应宏观热传导方程的截断误差后，在平衡分布函数中引进一个调节因子。

Aiming at the physical model inapplicability of flash method to measure thermal diffusivity of semi-transparentmaterials, a new physical model was proposed. In the model, according to the permeance of materials, the pulse laserabsorption of materials is of exponential type, and the authors establish a relevant differential equation and get a analyticalform.

针对传统的闪光法在物理模型上不适于用来测试半透光物质热扩散率的问题，提出了一个新的物理模型，该模型根据物质的透光性，确定样品对脉冲激光的吸收为指数型，建立了相应的微分方程并求得其解析解。

We developed the theories and methods founded by C.S.Wen at low Knudsen number, gain the relative velocity and relative Brownian diffusivity tensor of the particles, and the pair-distribution equation at high Knudsen number is established.

首先，从C.S.Wen已经建立了的低Knudsen数下连续介质体系中碰并理论一系列方法出发，得出了高Knudsen数下的粒子间的相对重力速度和相对Brown扩散系数，并得到了高Knudsen数条件下的对分布方程。

For example, it is stall need to study the thermal equation-of-state, to find a proper methodology for calculating self-diffusivity, to propose a better potential model for mullite and sillimanite, to calculate mechanical properties at high temperature, and to analyze the structural transformation at high temperature.

本研究所建立的研究方法与流程适合应用在陶瓷材料的模拟与分析，而我们已经探讨了莫来石的缺陷对晶体结构、晶格常数、热膨胀、体模数、缺陷能、氧扩散的影响，接下来可以朝向以下几点深入研究，包含研究热状态方程式、找出最适当的方法来计算扩散系数、提出更好的分子势能模型、研究莫来石在高温下的相变化与力学性质。

The concepts of degree of enthalpy and enthalpy diffusivity are introduced in terms of the concept of enthalpy in calorifics. Heat equation of enthalpy is constructed and converted into heat equation of temperature by latent heat.

因此根据热力学中焓的概念，提出了焓度和焓扩散系数的概念，建立了焓的热传导方程并根据潜热把焓的热传导方程转化为温度场方程。

This diffusivity equation has been used to model the different ideal condition drying process, analyze the influence of internal temperature field on internal moisture diffusion. Further studying shows that: on some condition, there may be exist the fastest drying process, to a certain extent, which illustrates the direction and the potential of optimizing heat and mass transfer.

最后应用模型进行了不同理想工况下物料干燥过程的模拟计算，分析了物料内部温度场对水分扩散的影响，进一步研究表明：物料在一定条件下有一个最快干燥过程存在，这在一定程度上说明了优化传热传质的方向与潜力。

Corresponding to the Darcy-Richards equation, hydraulic resistance and resistivity are the reciprocals of conductance and conductivity respectively; time constant is the reciprocal of the diffusivity; and time constant per unit squared length is the reciprocal of diffusivity.

与Darcy-Richards方程相对应，水阻、时间常数分别为导水度、水分扩散度的倒数，相应地单位化的水阻率、比时间常数分别为导水率、水分扩散率的倒数。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。