Steady-state flow and static analysis with Fluent and Abaqus

Using preCICE
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1

HI:
now, I have fluent and abaqus case, fluent case is steady, abaqus case is static analysis, not steay, my question is if I will do coupling with fluent and abaqus, how to set xml file.

2

Hi @hikey,

I am not sure I understand what you want to do exactly. Could you please elaborate on the model of your problem?

Generally, steady-state simulations are set up as usual with preCICE. You mainly need to set your coupling time window to the number of iterations after which you want to couple.

3
<?xml version="1.0" encoding="UTF-8" ?> 
<mesh name="Fluid-Mesh-nodes">
  <use-data name="NPosition"/>
  <use-data name="RelWallForceVertex"/>
</mesh>

<mesh name="Fluid-Mesh-faces">
  <use-data name="RelWallForce"/>
</mesh>

<mesh name="Solid-Mesh">
  <use-data name="NPosition" />
  <use-data name="RelWallForceVertex" />
</mesh>

<participant name="Fluid">
  <use-mesh name="Fluid-Mesh-nodes" provide="yes"/>
  <use-mesh name="Fluid-Mesh-faces" provide="yes"/>
  <use-mesh name="Solid-Mesh" from="abaqus"/>
  <write-data name="RelWallForce" mesh="Fluid-Mesh-faces"/>
  <write-data name="RelWallForceVertex" mesh="Fluid-Mesh-nodes"/>
  <read-data name="NPosition" mesh="Fluid-Mesh-nodes"/>
  <mapping:nearest-projection
    direction="write"
    from="Fluid-Mesh-nodes"
    to="Solid-Mesh"
    constraint="conservative"/>
  <mapping:nearest-projection
    direction="read"
    from="Solid-Mesh"
    to="Fluid-Mesh-nodes"
    constraint="consistent"/>
</participant>

<participant name="abaqus">
  <use-mesh name="Solid-Mesh" provide="yes"/>
  <write-data name="NPosition" mesh="Solid-Mesh"/>
  <read-data name="RelWallForceVertex" mesh="Solid-Mesh"/>
</participant>

<m2n:sockets from="Fluid" to="abaqus" exchange-directory=".." />

<coupling-scheme:parallel-explicit>
  <time-window-size value="1" />
  <max-time value="100" />
  <participants first="abaqus" second="Fluid" />
  <exchange data="RelWallForceVertex" mesh="Solid-Mesh" from="Fluid" to="abaqus" />
  <exchange data="NPosition" mesh="Solid-Mesh" from="abaqus" to="Fluid" />
</coupling-scheme:parallel-explicit>

I do’nt sure it’s right , can you check it ?

4

and have another mistake as follow:
code :
if (precicec_isReadDataAvailable())
{
precicec_readBlockVectorData(displID, dynamic_thread_node_size[thread_index], node_indices, readData.data());
}

when run coupling , precicec_isReadDataAvailable() ======0, i don’t konw why?

5

and I have found antother mistake is:
I run fluent adapter first , and fluent adapter waiting, then I run abaqus adapter second, but fluent adapter run alone without coupling with abaqus, why? no connection?

6

What do the log files state?
Does maybe Fluent fail to load preCICE, but still goes on?

Important: remove any precice-run/ directory before running again.