Date: Mar 23, 2013 3:56 AM
Author: Nasser Abbasi
Subject: Re: Pdepe

On 3/22/2013 8:30 PM, Igor wrote:
> hi everybody,
>
> What to do if pdepe too slow?


slow is relative. So it is slow compared to what?

> I am solving Diagenesis equation with fluxing BC (oscillating (360*cos(t*(2*pi))+360))
>and pdepe solver takes 2 hours and more. How can I improve speed?


how many elements are you using?

>Is there any Possibilities to improve? Or maybe you can advice me another method? for instance, FD
>
> As I know pdepe uses FEM method. Am I right?
>


yes.

> Could be something better than pdepe for this task?
>
> I've read the article "A comparison of some numerical methods in solving 1-D steady-state
>advection dispersion reaction equation" by D. Yudianto* and Xie Yuebo. And they said that it is
> best way. Can we trust them?
>


Do not trust any one.

--Nasser