I'm trying to solve the diffusion PDE for my system, shown below:
where C is the concentration, changing with time t and radius r. D is the diffusion coefficient.
I'm solving this using seperation of variables, giving me two ODE.
One of the ODE is:
where lamba is a constant.
Does any one have any ideas on how to solve this ODE tro obtain a general solution? I tried using a change in variables.
Any help would be appreciated. Thanks in advance!