For the new Q5 the predicted total drag from
CFD differs only by 5 counts from the wind tunnel measurements which means very good agreement as shown in Table 2.
In the first of a series of more technical design pieces, PE looks at how engineers have used computational fluid dynamics to predict parasitic drag from helicopter rotor hubs
In single-rotor helicopters, almost 33% of the total vehicle drag can be caused by the parasitic drag from the hub.
In terms of the results, the drag from the steady-state runs with MRF was equal to the maximum drag predicted in the Des runs with a 5[degrees] hub rotation per time step.
Washington, Dec 19 (ANI): Scientists have finally isolated magnon drag from other thermoelectric effects after a 50-year quest.
Valenzuela have discriminated the magnon drag from other thermoelectric effects using a unique device geometry.
During this cycle, the craft descended to about 180 km above the Venusian surface -- low enough to encounter significant drag from
the pIanet's atmosphere.
When a finger reached the edge of the pad, the user was required to either hold a button down to reposition the finger or let go of the operation and restart the drag from
a new position.