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Add a new feature of elastically mounted object using the moving reference frame force

Ankang Gao requested to merge gaoak/nektar:feature/MRF_passivemotion into master

Issue/feature addressed

In the current moving reference frame force, the motion of the body should be prescribed in the session, which prevents the application of Nektar++ in the fluid-structure interaction problems. In this branch, a rigid-body solver is added to support the free motion of the body.

Proposed solution

The tranlsational motion and rotating around z axis can be set as free. The Eulerian angle is used for z-rotation. The rigid body equations are solve using NewmarkBeta scheme.


A rigid-body solver is added. This solver passes force data to the moving reference frame module and the MRF returns body's velocity and angle.


A self-propelled pitching airfoil is added.

Suggested reviewers

Mohsen is suggested as a reviewer.


Please add any other information that could be useful for reviewers.


  • Functions and classes, or changes to them, are documented.
  • User guide/documentation is updated.
  • Changelog is updated.
  • Suitable tests added for new functionality.
  • Contributed code is correctly formatted. (See the contributing guidelines).
  • License added to any new files.
  • No extraneous files have been added (e.g. compiler output or test data files).
Edited by Jacques Xing

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