http://xyst.i2p/chocg_example_sphere.html
Here the Reynolds number is defined as , based on the free-stream velocity, , sphere diameter, , fluid density, , and dynamic viscosity, . Drag Repeatedly performing the above simulation with different Reynolds numbers and computing the force the fluid exerts on the sphere allow numerically estimating the drag coefficient which can be compared to experimental data in [1] and thus validating the solver implementation.