In view of inaccuracy, limitations and computation complexity of the present empirical formulas in computing diffusion coefficient of binary gas in normal atmosphere, this letter proposes a new formula for computing diffusion coefficient.中国科学通报:英文版陈昭宜刘蕊梅...
The first term of Eq. (17) takes into account the gas diffusion. For single atom diffusion coefficient, there are several options. The recommended equation for single atom diffusion coefficient D (cm2 s−1) in UO2 is the Turnbull’s equation: (18)D=D1+D2+D3 where D1 is 7.6E...
A numerical test is performed in order to show the efficiency and accuracy of the present work.EbrahimiDepartmentM.DepartmentAustralian Journal of Basic & Applied SciencesEbrahimi, M., 2011. Estimation of diffusion coefficient in gas exchange process within human respiration via an inverse...
1) gas effective diffusion coefficient 气体有效扩散系数1. On the basis of studying gas transfers mechanism into porous medium materials,a calculation formula of gas effective diffusion coefficient of concrete based on pressure gradient is deduced according to the relative theory,and a new rapid ...
In thegas and liquid density regimes, the formula $D_{CERC}$ for the self-diffusioncoefficient is accurate within maximum 4% of the molecular dynamics simulationvalues reported in the literature. It is the most reliable among the formulaspresented...
diffusion coefficient扩散系数;扩散率 diffusion equation扩散方程 gas diffusion气体扩散,气态扩散 diffusion process扩散过程 diffusion bonding扩散压合;扩散接合;扩散粘结 diffusion layer扩散层 diffusion mechanism扩散机制;扩散机理 molecular diffusion分子扩散
during a certain time interval (t) in a medium whose coefficient of diffusion (D) is known,Dbeing equal to one-half the average of the square of thedisplacementin thex-direction. This formula for probability “density” allowsPto be plotted againstx. The graph is the familiarbell-shaped ...
The Darcy permeability is similar to the diffusion coefficient, which represents the viscous resistance of a solid material to fluid flow under a pressure gradient, and is related to the microstructure of the solid skeleton and the viscosity of the fluid. ...
We derive the exact expression of the diffusion coefficient of a self-gravitating Brownian gas in two dimensions. Our formula generalizes the usual Einstei... PH Chavanis - 《European Physical Journal B》 被引量: 47发表: 2007年 Brownian Diffusivities of interacting colloidal particles measured by...
Results further reveal thatDmaxincreases significantly with decreasing solvent density within the gaslike supercritical fluid where the changes in viscosities are negligible. These findings are unique, novel, and intriguing. We suggest that the enhancement of the diffusion coefficient in the vicinity of ...