In this chapter, Fick's laws of diffusion are introduced. The second law is derived using the first law and the mass conservation. Solutions for the second law considering a constant diffusion coefficient for different conditions are given. Few examples are also introduced to show the estimation ...
Fick扩散方程(Fick's Law of Diffusion)是在物理学和化学中反映物质在物理或化学环境中的扩散过程的方程式。它描述了物质被逐渐扩散出某个区域后,离散粒子的浓度会发生变化,且变化量与粒子到这个区域的距离有关。 Fick扩散方程的一般形式为: D∂^2C/∂x^2=∂C/∂t 其中D为扩散系数,C为离散物质的浓度...
Fick’s second law is derived from Fick’s first law. The concentration gradient and diffusive flux are correlated according to Fick’s first law of diffusion. It postulates that “the flux goes from regions of high concentration to regions of low concentration, with a magnitude proportional to...
Ⅱ第20讲 Fick’s law for diffusion 1587 播放兔八哥 八哥效率法 收藏 下载 分享 手机看 登录后可发评论 评论沙发是我的～选集(53) 自动播放 [1] Ⅰ第1讲 Multiplicit... 9547播放 1:18:55 [2] Ⅰ第2讲 Binary Mode... 2744播放 1:20:43 [3] Ⅰ第3讲 Sharpness o... 1984播放 ...
Fick's law of diffusion 网络 斐克扩散定律; 菲克扩散定律
diffusion (redirected fromFick's first law of diffusion) Dictionary Thesaurus Medical Financial 1.Physics a.the random thermal motion of atoms, molecules, clusters of atoms, etc., in gases, liquids, and some solids b.the transfer of atoms or molecules by their random motion from one part of...
Fick's law of diffusion 英文Fick's law of diffusion 中文【化】 菲克扩散定律
Fick’s First Law of Diffusion
网络斐克扩散定律;菲克扩散定律;菲克氏扩散定律 网络释义
Fick's law of diffusion J= - D DCDx - nptel:菲克定律和# 39;扩散j = D DCDX - NPTEL 热度: 扩散方程 扩散方程稳态扩散与非稳态扩散 1.稳态扩散下的菲克第一定律(一定时间内,浓度不随时间变化dc/dt=0) 单位时间内通过垂直于扩散方向的单位截面积的扩散物质流量(扩散通量)与该面积处的浓度 ...