From: Wolfgang Bangerth Date: Tue, 19 May 2020 18:01:25 +0000 (-0600) Subject: Link in step-70 pictures and videos. X-Git-Tag: v9.2.0~4^2~1 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd70c19f7058aab657ce0f1c7f7edd9e1bfd0602;p=dealii.git Link in step-70 pictures and videos. --- diff --git a/examples/step-70/doc/results.dox b/examples/step-70/doc/results.dox index 06b13cd6b2..cd103945ba 100644 --- a/examples/step-70/doc/results.dox +++ b/examples/step-70/doc/results.dox @@ -327,28 +327,27 @@ assembling the Stokes part. This depends highly on the number of Gauss points In the present case, a relatively low number of tracer particles are used. Consequently, tracking their motion is relatively cheap. -The following images present the initial and the final configuration of the -simulation domain: - - -

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- +The following movie shows the evolution of the solution over time: +@htmlonly

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- -We see that, generally, the tracer particles have somewhat returned to their + +

+@endhtmlonly + +The movie shows the rotating obstacle in gray (actually a +superposition of the solid particles plotted with large enough dots +that they overlap), streamlines +of the fluid flow in light colors (including the corner vertices +that form at specific times during the simulation), and the tracer particles in +bluish tones. + +The simulation shows that at the end time, +the tracer particles have somewhat returned to their original position, although they have been distorted by the flow field. The following image compares the initial and the final position of the particles after one time unit of flow. @@ -370,6 +369,7 @@ fictitious domain and, finally, by the discretization error on the Stokes equations. The first two errors are the leading cause of this deformation and they could be alleviated by the use of a finer mesh and a lower time step. +

Three dimensional test case

To play around a little bit, we complicate the fictitious domain (taken from