pressure drag


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pressure drag

[′presh·ər ‚drag]
(fluid mechanics)
References in periodicals archive ?
The increase in drag past the optimum is shown to be from the vortex drag component, or the slant pressure drag, whilst the base pressure drag continues to fall with the base area.
The pressure drag at the rear of the lead vehicle is reduced due to the increase in base pressure in the presence of a following vehicle.
Due to the distinguished difference of pressure in front and back of the vehicle, pressure drag posses the main contribution of total drag.
This region has influence on static pressure distribution near the jetting outlet and makes the pressure drag on the outlet be reduced.
It clearly shows the enhancement in the pressure drag coefficient with the decrease in the Reynolds number and the power law index.
4) are similar to those typical of a bluff body such as a cylinder perpendicular to flow in that, first, on the upstream side, pressures were high (causing forces pushing downstream); second, partway downstream, pressures became negative (causing outward forces) as flow sped up around the clam; and third, at the downstream end, pressures did not recover (did not become positive as they would have done in an ideal fluid or on a streamlined shape), thus giving rise to pressure drag and signaling separation of flow on the model.
The rate of the aerodynamic drag reduction is determined by comparing the coefficient of the pressure drag between solo driving and the platooning.
Dimples on a golf ball have the effect of reducing the so-called "form" or pressure drag force exerted on the ball travelling through the air ("Golf lessons for aviation," Letters, PE May).
The only reason of it is the pressure drag reduced significantly.
By contrast, large, fast swimmers use the inertial properties of fluids for propulsion: bodies are streamlined to reduce pressure drag, and propulsion is often achieved by accelerations of the surrounding fluid.
The model showed that a major contribution to the drag of a vehicle came from the pressure drag that is a consequence of flow separation.
1698 counts while the pressure drag (focus of the optimization) shows a more significant drag reduction (-5.

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