## Fluids

#### How to calculate Pressure force on the section of body

• Tayyaba
Subscriber

Hi

I am working with the CFD of a 3D flap . I need to have distribution of pressure forces on a section of a flap. What I get from Fluent is only the pressure distribution in Pascals not the pressure force in Newtons.Do I have to integrate this pressure over the area of flap so get force?

Moreover from Reports-Forces, I get the net value of drag force(including pressure and viscous forces) on the whole flap. It is not showing that how drag force is distributed along the different position on the flap for example across the height or length of the flap.

Flap is attached and forces are needed across the highlighted edge .

Regards

Tayyaba

• Rob
Ansys Employee

The Force Report is per surface, if you need a finer resolution separate the faces and report on them individually.

• Tayyaba
Subscriber

Thank you very much for your kind reply, but how to separate different faces after solution?

Regards

Tayyaba

• Rob
Ansys Employee

Look on the ribbon under Domain, Separate faces. It'll potentially mess up the Workbench workflow so make sure you save a copy of the project before doing it.

• Tayyaba
Subscriber

But again it gives the net value and what I need is the force at different locations across the flap or you can say force distribution as pressure distribution in Fluent

And also my question is: the net value of force is exactly at which location on the flap?

Regards

Tayyaba

• Rob
Ansys Employee

It's for the surface you report on. If you need to break it down you can create many surfaces and report those.