# pressure drag

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Related to pressure drag: Profile drag

## pressure drag

[′presh·ər ‚drag]
(fluid mechanics)
References in periodicals archive ?
There, the friction drag force and the pressure drag force can be expressed as
There are two typical characteristics of the flow around the DrivAer baseline model: the pressure drag due to the flow separation at the rear window and trunk end, and the induced drag due to the longitudinal vortex pair, which is created by the c-pillar vortex and downwash from flow over the model.
where [C.sub.Dp] and [C.sub.Df] are the coefficients of the pressure drag and frictional drag, respectively, and Re = [rho]u[infinity]D/[mu] is the Reynolds number.
The obstacle flow around the nose of the follower AUV hinders the separation on the tail of the leader AUV; therefore, a certain amount of pressure is recovered on the tail of the leader AUV, which contributes to a reduction of the pressure drag of the leader AUV.
--Due to the distinguished difference of pressure in front and back of the vehicle, pressure drag posses the main contribution of total drag.
The pressure drag is the result of the pressure gradient along the body.
In terms of hydrodynamic efficiency, this favorable amount of lift (at all angles of attack) was somewhat offset by the substantial amount of drag (primarily pressure drag) that occurs simultaneously.
* The total drag coefficient, [C.sub.D], sum of the friction drag coefficient and the pressure drag coefficient, is defined as:
The second is pressure drag, which is the part due directly to the shape of an object.

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