On 8/7/22 10:36, wang yuan wrote:
And we all know that the h method and the p method can make the calculation
result more accurate, but at the same time consume a lot of computing resources.
So is there any other method that can effectively improve the accuracy? Do you
have any tutorials to share?
There is also r-adaptivity, though it is difficult to implement that in deal.II.
In the end, here are two questions I'd like to suggest you think about:
* I *believe* that what you really care about isn't accuracy, but *accuracy as
a function of something*. You can get any accuracy you want with the finite
element method if you're willing to throw enough computational resources at
it. But usually, there is something that limits you: compute time, memory,
etc. So if you say you want to improve accuracy, my question is first to ask
what your limiting factor is -- in other words, why don't you just use global
refinement?
Also, if you know of books or articles about nonlinear solvers or
fluid-structure interaction methods, can you recommend them to me?
I don't have anything specific to offer, but there are several video lectures
on the topic of nonlinear solvers.
Specifically for fluid-structure interaction, people have posted a number of
links on the mailing list before (specifically Thomas Wick) and I would
suggest you search the archives.
Best
WB
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Wolfgang Bangerth email: [email protected]
www: http://www.math.colostate.edu/~bangerth/
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