Lecture 4 - Astro Pas Rochester
Lecture 4 - Astro Pas Rochester
Lecture 4 - Astro Pas Rochester
SHOW LESS
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Diffusive approximations<br />
@f(x, t)<br />
@t<br />
= @<br />
@x<br />
apple<br />
D<br />
@f(x, t)<br />
@x<br />
f(x,t) is a quantity such as concentration or<br />
Temperature or energy density<br />
The flux depends on the gradient<br />
Units of the diffusion coefficient D (cm 2 s -1 )<br />
D is a velocity times a length scale<br />
@f(x, t)<br />
@x<br />
<strong>Astro</strong>nomy 142 23
Change language