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ValeryOchkov24-Ruby IV
24-Ruby IV
March 11, 2015
Solved

Odesolve and boundary problem

  • March 11, 2015
  • 4 replies
  • 2034 views

Can we use Odesolve for boundary problem.

I think for one ode can, but for 2, 3...See please the attach.

odebp.png

Best answer by Fred_Kohlhepp

I was surprised (and pleased) to discover this, but it only works sometimes.

An attempt to impose a constraint inside the solution range fails.

4 replies

F
Fred_Kohlhepp23-Emerald IAnswer
23-Emerald I
March 11, 2015

I was surprised (and pleased) to discover this, but it only works sometimes.

An attempt to impose a constraint inside the solution range fails.

H
HarveyHensley12-Amethyst
12-Amethyst
March 11, 2015

It looks like you have circular definitions of v and y for the cases with errors.

H
HarveyHensley12-Amethyst
12-Amethyst
March 14, 2015

I was wrong about the circular definitions...it works. You need to replace the independent variables in the odesolve call from t to x to agree with the rest of the problem. Both of the problems with errors work fine then.

Already answered.....hmmm?

V
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
March 14, 2015

HARVEY HENSLEY wrote:

I was wrong about the circular definitions...it works. You need to replace the independent variables in the odesolve call from t to x to agree with the rest of the problem. Both of the problems with errors work fine then.

Already answered.....hmmm?

Thanks, Harvey.

It was my error.

V
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
March 14, 2015

It is my odesolve (the temperature field in circular wall at static condition):

MPM-ODE-BP.png

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