The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math.num-analysis

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: highly accurate pde solvers?
Replies: 6   Last Post: Nov 30, 2012 5:34 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Dieter Britz

Posts: 20
Registered: 6/17/10
Re: highly accurate pde solvers?
Posted: Nov 29, 2012 3:33 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

On Wed, 28 Nov 2012 12:36:44 +0100, Leslaw Bieniasz wrote:

> Hi,
> I need to solve a certain relatively simple PDE (evolutionary
> convection-diffusion in 1D space)
> but with a very high accuracy, ideally with a relative error 10^(-20).
> Are there any free programs available that can handle such a problem?
> I presume the programs would have to use some sort of arbitrary
> precision arithmetics.
> Leslaw

Use quad-precision? On my system, that is about 32 decimal places.
Very slow though. And as Robin Vowels points out, you would have to
make sure the discretisation errors don't spoil the accuracy, but
you know all about that.

Dieter Britz

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.