ENGR 220 Lecture 10 Chapter 5
Week 5 Recitation
Quiz Chp. 5, HW 6.4, 6.5, 6.10, 6.21
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Diffusion A. Steady State Concentration profile is not a function of time B. Nonsteady State o Transient Concentration profile is a function of time Steady State A. Diffusion across a thin plane B. Rate of diffusion independent of time dC 0 dx C. Ficks First Law of diffusion
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0
dx
D. Units 0 (something)/m' s Something a) Atoms, person, moles, kg E. Temperature Slide #22 Non-Steady State A. Concentration O Function of both time and position a) C=C(x,t) o Ficks Second Law a) Slide #29 B. Differential Equations o Boundary and Initial Conditions Necessary 0
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