Point receivers

[yuesu jin]

Dear all,

  I am working on an elastic wave simulation code which needs to set up receivers on the surface boundaries to record the waveform.  In this case, how can I link the point coordinate with the dof handlers and extract values from the solution vector? Thank you!

Best regards,

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Yuesu Jin,

[Daniel Arndt]

Yuesu,

Have a look at FEFieldFunction (https://www.dealii.org/current/doxygen/deal.II/classFunctions_1_1FEFieldFunction.html) for the case that the interpolation points don't coincide with support points for nodal elements.

Otherwise, you can use DoFTools::map_dofs_to_support_points (https://www.dealii.org/current/doxygen/deal.II/namespaceDoFTools.html#a5c7b6729af729af6d7deb67885467a79) and search fo the corresponding degree of freedom.

Best,

Daniel

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[yuesu jin]

Dear Daniel,

  Thank you very much! It solves my question!

Best wishes,

Yuesu

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Yuesu Jin,

Ph.D student,

University of Houston,

College of Natural Sciences and Mathematics,

Department of Earth and Atmospheric Sciences,
Houston, Texas 77204-5008


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