precice-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<precice-configuration>
  <log>
    <sink
      filter="%Severity% > debug and %Rank% = 0"
      format="---[precice] %ColorizedSeverity% %Message%"
      enabled="true" />
  </log>

  <solver-interface dimensions="3">
    <data:scalar name="Pressure" />
    <data:vector name="Velocity" />

    <mesh name="Fluid1D-Mesh">
      <use-data name="Pressure" />
      <use-data name="Velocity" />
    </mesh>

    <mesh name="Fluid3D-Mesh">
      <use-data name="Pressure" />
      <use-data name="Velocity" />
    </mesh>

    <participant name="Fluid1D">
      <use-mesh name="Fluid1D-Mesh" provide="yes" />
      <use-mesh name="Fluid3D-Mesh" from="Fluid3D" />
      <write-data name="Velocity" mesh="Fluid1D-Mesh" />
      <read-data name="Pressure" mesh="Fluid1D-Mesh" />
      <mapping:nearest-neighbor
        direction="read"
        from="Fluid3D-Mesh"
        to="Fluid1D-Mesh"
        constraint="consistent" />
    </participant>

    <participant name="Fluid3D">
      <use-mesh name="Fluid3D-Mesh" provide="yes" />
      <use-mesh name="Fluid1D-Mesh" from="Fluid1D" />
      <read-data name="Velocity" mesh="Fluid3D-Mesh" />
      <write-data name="Pressure" mesh="Fluid3D-Mesh" />
      <mapping:nearest-neighbor
        direction="read"
        from="Fluid1D-Mesh"
        to="Fluid3D-Mesh"
        constraint="consistent" />
    </participant>

    <m2n:sockets from="Fluid1D" to="Fluid3D" exchange-directory=".." />

    <coupling-scheme:serial-implicit>
      <time-window-size value="0.01" />
      <max-time value="1.0" />
      <participants first="Fluid1D" second="Fluid3D" />
      <exchange data="Velocity" mesh="Fluid1D-Mesh" from="Fluid1D" to="Fluid3D" />
      <exchange data="Pressure" mesh="Fluid3D-Mesh" from="Fluid3D" to="Fluid1D" />
      <max-iterations value="100" />
      <relative-convergence-measure limit="1.0e-6" data="Pressure" mesh="Fluid3D-Mesh" />
      <acceleration:IQN-ILS>
        <data mesh="Fluid3D-Mesh" name="Pressure" />
        <initial-relaxation value="0.01" />
        <max-used-iterations value="80" />
        <time-windows-reused value="10" />
        <filter type="QR1" limit="1e-8" />
      </acceleration:IQN-ILS>
    </coupling-scheme:serial-implicit>
  </solver-interface>
</precice-configuration>