drag force for each longitudinal profile

[allger]

Everytime we have the drag plot diagram enabled and we select another longitudinal profile the analysis starts over. Furthermore we can see a Drag force at the bottom of the model. Does this force apply only to this section(N/metres)? Does the programm assumes that the longitudinal profile has a certain width (N/ width)?

or the force shown is the overall drag force tha is applied on the model (N) ?

[hartogj · Accepted solution]

Hi

The behavior you described is specific to 2D analysis in Flow Design. The 2D plane will cut through the geometry wherever it intersects the model and will use the profile of the slice for running a 2D simulation. As you move the 2D plane, the profile of the slice will change if the geometry varies so the analysis will update to match it.

Overall 2D is a very conceptual tool in the context of Flow Design. It will show you the general behavior of flow over your model but it is over a 2D slice and effectively assumes the model has a uniform section.

When reviewing drag results for 2D, yes this is calculated based just on the one 2D section and assumes 1m depth.

Jon

[allger]

Thank you very much!

i didn't see that 3d analysis is also available.

[Anonymous]

Does this mean that for the 3D model, the displayed drag force is the total drag force applied to the model ?