On Thu, 25 Jan 2018, Michael Povolotskyi wrote:
I added a plain System class, and it worked.
Thanks! That was fast! (possibly causality-violatingly so? I could
swear I saw this message header in my inbox *before* I hit send on my
own previous message...)
---
Roy
Michael.
On 01/25/2018 12:17 PM, Roy Stogner wrote:
On Thu, 25 Jan 2018, Michael Povolotskyi wrote:
I will add another system and will not solve it.
Make sure it's ExplicitSystem (no, wait, maybe just plain System?
ExplicitSystem does still allocate an rhs, not just a solution).
ImplicitSystem will try to allocate a Jacobian for you whether you
plan to eventually assemble and solve with it or not, and that can get
expensive.
---
Roy
On 01/25/2018 08:25 AM, Roy Stogner wrote:
On Wed, 24 Jan 2018, Paul T. Bauman wrote:
Sorry for slow response. I have nothing better to offer other than 3
vectors, but maybe others will.
You can add another ExplicitSystem to the mesh, giving it a
vector-valued variable corresponding to your solution system's
scalar-valued variable.
This is more flexible (if you have multiple variables in your solution
system but only want to add a vector-valued postprocessed field for
one of them, for instance) but probably a bit harder to work with.
---
Roy
On Mon, Jan 22, 2018 at 12:40 PM, Michael Povolotskyi
<[email protected]>
wrote:
Dear Libmesh developers and users,
I need to compute a field on mesh based on a solution.
To do so I usually add a vector to a system and fill it with data.
This works perfectly for a scalar field.
What would you recommend to do for a vector field.
Of course, I can add 3 vectors, one for each component of the field.
Is
there a better way?
Thank you,
Michael.
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