An option to display in the 3d view the forces acting on each part and the total force has been added in beta 08.
The global force generalizes the concept of Center of Pressure. See for instance
Center of pressure
Since there doesn't seem to exist a universal definition of the Center of Pressure in 3d, it is calculated in flow5 as:
CP.x = Sum(Fn_i.x_i)/Fn
CP.y = Sum(Fn_i.y_i)/Fn
CP.z = Sum(Fn_i.z_i)/Fn
where Fn is the component of the resulting force along the wind normal, and the sum is carried out over the mesh panels.
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