All Questions
Tagged with mean-free-path fluid-dynamics
2
questions
4
votes
1
answer
549
views
What does ultra-rarefied gas mean?
Without using any math, can you explain to me what a rarefied gas is? And then what an ultra-rarefied gas is? I'd like to understand it from a conceptual level if you can make connections to other ...
- 265
1
vote
1
answer
7k
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Viscosity and mean free path
I have troubles understanding how to derive the formula for viscosity in terms of the mean free path
$$\eta\sim \rho \lambda \bar v$$
where $\bar v$ is the average molecular velocity of the gas, $\...
