Timeline for Evaluation of interface terms in Discontinuous Galerkin method
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Jun 29, 2014 at 12:30 | comment | added | Wolfgang Bangerth | This happens in the FEFaceValues objects: They evaluate the shape functions (and other things, as necessary) at quadrature points on the face you select. Once you move on to another face, the location of the quadrature points changes and so the evaluation has to be repeated. | |
| Jun 26, 2014 at 11:20 | vote | accept | Martin Vymazal | ||
| Jun 26, 2014 at 10:40 | comment | added | Martin Vymazal | Ok, thank you for your answer and for the link. I still don't understand where (in the element) would you evaluate the shape function gradients (if you needed them) in integrate_face_term: on the common face of cell1 and cell2 only? This means that when you process the interface of cell1 and say cell3, you will again have to evaluate all shape function gradients in cell1, just on different face. Or do you directly compute the gradients on all faces of cell1 and store temporary data somewhere until you visit cell3? Wouldn't this require a lot of memory? | |
| Jun 26, 2014 at 10:17 | history | answered | Wolfgang Bangerth | CC BY-SA 3.0 |