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Update toolbox.adoc #117

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Update toolbox.adoc
thomas-saigre Apr 29, 2020
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thomas-saigre Apr 30, 2020
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9 changes: 7 additions & 2 deletions docs/toolboxes/modules/cfd/pages/toolbox.adoc
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Expand Up @@ -567,13 +567,18 @@ The user must define:


==== Forces
compute lift and drag
Compute lift and drag

@prudhomm prudhomm Apr 30, 2020

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drag and lift are misnamed, they would require having the direction of the flow and the direction of motion. Forces computes the surfacic forces (F_x, F_y) applied by the fluid to the object. It would be drag and lift if the flow or motion is aligned with the x-axis

@prudhomm prudhomm Apr 30, 2020

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@vincentchabannes probably a discussion on forces should be done in http://docs.feelpp.org/toolboxes/0.108/cfd/theory/


[source,json]
----
"Forces":["fsi-wall","fluid-cylinder"]
"Forces":["marker1","marker2"]
----
Where `markerX` are the markers of where we want to compute the forces. The results will be given in a csv file whith those columns :

- time
- drag_marker1

@prudhomm prudhomm Apr 30, 2020

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I think drag and lift should be removed here until we provide a direction of flow or motion

- lift_marker1
- idem with marker2...


=== Export user functions
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