Aerodynamic or hydrodynamic performance of basic geometric shapes are known.

aerodynamic and hydrodynamic testing shapes like the sphere, cone, cylinder, cube, ellipsoid, rectangular plate, etc. .. have provided tables and calculation formulas linking their dimensions to their Cd (drag coefficient for predicting the resistance force of the form immersed in a fluid stream).

drag on tube

These tables and formulas are used to assess the friction forces and turbulence to be generated .... These basic geometric forms are available in the tab: drag and lift of mecaflux and you only have to choose their form and dimensions to evaluate the drag it generates..

The clever use of these forms allows to evaluate with sufficient accuracy the forces of friction or resistance to the advancement of an object possessing a more complex form, by decomposing it into simpler forms

The accuracy is sufficient to provide useful information on the forces without embarking on a calculation and a heavy 3d modeling often time.With a reasonable safety factor, the study is greatly simplified without losing its quality.

drag force tree

cd drag on shell

ellipsoid drag force

drag force on oblique plate

drag force sphere

More screen shots: profiles and articles submitted to the drag and lift in standard mecaflux