pressure drag


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pressure drag

[′presh·ər ‚drag]
(fluid mechanics)
pressure resistance
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References in periodicals archive ?
There, the friction drag force and the pressure drag force can be expressed as
Study on Airflow Field and Fiber Motion with New Melt Blowing Die
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.
Comparison of Various Drag Reduction Devices and Their Aerodynamic Effects on the DrivAer 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.
A Comparative Study on Evaluation Methods of on Cartesian Grids
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.
Layout Optimization of Two Autonomous Underwater Vehicles for Drag Reduction with a Combined CFD and Neural Network Method
--Due to the distinguished difference of pressure in front and back of the vehicle, pressure drag posses the main contribution of total drag.
Experimental analysis of roughness over drag and turbulence in the automobile "Samand"
The pressure drag is the result of the pressure gradient along the body.
Design, fabrication, and swimming performance of a free-swimming tuna-mimetic robot
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.
Hydrodynamic characterization of the Polyodon spathula rostrum using CFD
However, BNSS can decrease the pressure drag significantly.
Study on drag reduction characteristic around bodies of revolution with bionic non-smooth surface
A sharp nose reduces pressure drag, but so does supersonic speed.
No-bull ballistics: the science of projectiles in flight isn't black magic, and it isn't only for math wizards. But if you want to hit, it is important
Compared to a knife, a wire accepts some increase in pressure drag in order to achieve a massive reduction in wetted area and thus viscous drag.
Like wire through cheese: supercavitation: suprcavitation occurs when a submerged moving body is covered in water vapour, with consequent reduction in density-dependent friction. Already applied to torpedoes and special-purpose bullets, the concept may be extended to submarines, surface vessels and (possibly) bunker-busting munitions
* The total drag coefficient, [C.sub.D], sum of the friction drag coefficient and the pressure drag coefficient, is defined as:
Steady flow of power law fluids across a circular cylinder
The second is pressure drag, which is the part due directly to the shape of an object.
Semi-trucks: what a drag! (Senior Division)

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