CBE 30356 - Lecture Notes - March 23, 2023
Announcements
Class notes
Read through pages 242-252 of the notes and view the online narration below. Don't forget to complete the quiz in Canvas!
The main points of the lecture were
- The Stefan Tube
- Parallels between heat and mass transport
Goals:
After this class you should be able to:
- Know how to calculate the diffusion coefficient of a gas from evaporation of a liquid in a tube.
- See where finite concentration effects give rise to added mass flux in gas diffusion.
Reading
- The class notes.
- BS&L, 18.2, 20.1
Problem of the Day:
In class today we will look at the analogous problem of diffusion through a spherical gas film: a model for an evaporating drop. The notes for this material are provided here.
Demonstration:
David.T.Leighton.1@nd.edu