MathGroup Archive 2005

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: How to specify boundary conditions on all 4 sides of a plate for a steady state heat equation (PDE) using NDSolve? (Laplace equation)

  • To: mathgroup at smc.vnet.net
  • Subject: [mg59774] Re: How to specify boundary conditions on all 4 sides of a plate for a steady state heat equation (PDE) using NDSolve? (Laplace equation)
  • From: "James Gilmore" <james.gilmore at yale.edu>
  • Date: Sat, 20 Aug 2005 03:14:39 -0400 (EDT)
  • Organization: Yale University
  • References: <ddpt58$orc$1@smc.vnet.net> <dds9co$91c$1@smc.vnet.net> <dduroq$oih$1@smc.vnet.net> <de13a8$8pb$1@smc.vnet.net> <de45jl$qtq$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Nasser,

Yes, I had similar bugs as well. These are just formatting errors in the 
LESolver.m file. You need to go into the .m file and do
some manual editing. Most are spurious 'Returns'  on the lines indicated.

I have been notified offline of another source: 
<http://www.imtek.uni-freiburg.de/simulation/mathematica/IMSweb/>. The 
server appears intermittent. I haven't tested the packages yet, but the 
examples provided appear sound.

-- 
James Gilmore

Graduate Student
Department of Physics
Yale University
New Haven, CT 06520 USA

"Nasser Abbasi" <nma at 12000.org> wrote in message 
news:de45jl$qtq$1 at smc.vnet.net...
> "James Gilmore" <james.gilmore at yale.edu> wrote in message
> news:de13a8$8pb$1 at smc.vnet.net...
>
>
>>
>> There is a package on Math source that can be used to solve the
>> Laplace
>> equation at least. I have it working on my machine (Mathematica
>> 5.0.0.0 Win XP).
>>
>> <http://library.wolfram.com/infocenter/MathSource/684>
>>
>> The package needs development, but is a useful tool. I have solved
>> the
>> Laplace equation with rectangular BC with this package. But beware,
>> it has
>> trouble with corners (but I believe that can be fixed) and small
>> numerical
>> errors can occur close to the boundaries.
>>
>
> Thanks for the link to this package. It gives me errors just when
> loading it. Here are the errors. This is on 5.2, windows XP.
>
> http://12000.org/my_notes/LESolver/LESolver_errors.png
>
> I also tried to execute the documentation notebook itself which
> contains examples, parts of it worked, but many parts give many long
> errors and it seems to have went in a loop, but may be I should have
> waited a bit more.
>
> Any way, since the package is dated 1996, I can understand. I am not
> sure the original author is still at the email address shown there,
> but I am sending them a link to the above now.
>
> Nasser
>
>
>
>
> 



  • Prev by Date: Re: Simplifying Conjugate[] with 5.2 Mac
  • Next by Date: Re: Simplifying Conjugate[] with 5.2 Mac
  • Previous by thread: Re: How to specify boundary conditions on all 4 sides of a plate for a steady state heat equation (PDE) using NDSolve? (Laplace equation)
  • Next by thread: Re: Re: How to specify boundary conditions on all 4 sides of a plate for a steady state heat equation (PDE) using NDSolve? (Laplace equation)