Assignment 1 Florian Vesting 2012-09-07 Florian Vesting - - PowerPoint PPT Presentation

icoFoam interFoam simpleFoam Utility

Assignment 1

Florian Vesting 2012-09-07

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icoFoam interFoam simpleFoam Utility

icoFoam — Cavity

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icoFoam interFoam simpleFoam Utility

icoFoam — Cavity

Utilies: mapFields, blockMesh, sample

The first two figures show the differences of pressure and velocity between the coarse and fine grid along a horizontal line The graphs were created using the sample utility and plotting with Gnuplot The third figure shows the to cases directly in comparison within one window. text was included in the window to distinguish the cases

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icoFoam interFoam simpleFoam Utility

icoFoam — Cavity Clipped

To the left, the initial solution from the unclipped cavity case To the right, the solution for the changed geometry Both figures are created using filter cellCenters and glyph Utilies: mapFields, blockMesh

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icoFoam interFoam simpleFoam Utility

icoFoam — Cavity Grade

To the left, showing the generated graded grid To the right, applying the meshQuality filter with the maximumEdgeRatio Utilies: mapFields -consistent, blockMesh

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icoFoam interFoam simpleFoam Utility

icoFoam — Cavity High Re

Pressure with pressure contours (left), using contour on a slice Streamlines using streamTracer colored with the vorticity Utilies:

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icoFoam interFoam simpleFoam Utility

InterFoam — damBreak

Dambreak at the initial time step using HSV Color Space Dambreak at the last time step of 2 seconds. Time visualization with AnnotateTime, changing the format to %3.2f

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icoFoam interFoam simpleFoam Utility

InterFoam — damBreakFine

Decomposition of the domain for parallel computations. clip filter in the foreground showing the scalar value of alpha1 at different time steps.

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icoFoam interFoam simpleFoam Utility

InterFoam — damBreak comparison

Direct comparison between the fine (left) and coarse (right) grid. Both solutions were loaded in paraView and the coarse grid was translated.

Utilies for Dambreak: blockMesh, setFields Utilies for DambreakFine: blockMesh, setFields and desomposePar

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icoFoam interFoam simpleFoam Utility

SimpleFoam — pitzDaily

The movie shows the development of the kinetic energy k over the different iterations. To show the iteration no. I used

• AnnotateTime. The animated gif is

created with convert command. Streamlines at the converged iteration 765. The streamlines are created with

• streamTracer. However, to get the

contour of the geometry behind the streamlines I created a silce and colored it with the solid color. Utilies: blockMesh

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icoFoam interFoam simpleFoam Utility

Utility — Mesh manipulation

http://www.openfoam.com/features/mesh-manipulation.php http://openfoamwiki.net/index.php/RotateMesh

Rotates the mesh and fields from the direcion n1 to the direction n2 On the damBreak example: rotate the mesh-axis from parallel to X, to a diagonal orientation rotateMesh "(1 0 0)" "(1 -1 0)"

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