Ok,(adsbygoogle = window.adsbygoogle || []).push({});

I have been given the steady state diffusion equation in 1d spherical polar coordinates as;

D.1/(r^2).'partial'd/dr(r^2.'partial'dc/dr)=0

I know that the solution comes in the form c(r) = A+B/r where A and B are some constants. I just dont know how to get from here to there. I have tried doing differentiation by parts on the equation then integrating the result, with no success. I can form a second order differential equation of the form;

r^2.'partial'd2c/dr2 +2r'partial'dc/dr = 0

but again dont know where to go from here. Any help greatly appreciated!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Solution to diffusion equation in 1d spherical polar coordinates

**Physics Forums | Science Articles, Homework Help, Discussion**