Dimensionless parameter to quantify fluid resistance
Drag coefficients in fluids with Reynolds number approximately 104[1][2] Shapes are depicted with the same projected frontal area
In fluid dynamics, the drag coefficient (commonly denoted as: , or ) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water. It is used in the drag equation in which a lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag. The drag coefficient is always associated with a particular surface area.[3]
The drag coefficient of any object comprises the effects of the two basic contributors to fluid dynamic drag: skin friction and form drag. The drag coefficient of a lifting airfoil or hydrofoil also includes the effects of lift-induced drag.[4][5] The drag coefficient of a complete structure such as an aircraft also includes the effects of interference drag.[6][7]
^Baker, W.E. (1983). Explosion Hazards and Evaluation, Volume 5. Elsevier Science. ISBN 978-0-444-59988-9.
^AARØNÆS, ANTON STADE (2014). Dynamic response of pipe rack steel structures to explosion loads(PDF). CHALMERS UNIVERSITY OF TECHNOLOGY.
^McCormick, Barnes W. (1979). Aerodynamics, Aeronautics, and Flight Mechanics. New York: John Wiley & Sons, Inc. p. 24. ISBN 0-471-03032-5.
^Clancy, L. J. (1975). "5.18". Aerodynamics. Wiley. ISBN 978-0-470-15837-1.
^Abbott, Ira H., and Von Doenhoff, Albert E.: Theory of Wing Sections. Sections 1.2 and 1.3
^"Modern Drag Equation". Wright.nasa.gov. 2010-03-25. Archived from the original on 2011-03-02. Retrieved 2010-12-07.
In fluid dynamics, the dragcoefficient (commonly denoted as: c d {\displaystyle c_{\mathrm {d} }} , c x {\displaystyle c_{x}} or c w {\displaystyle c_{\rm...
The dragcoefficient is a common measure in automotive design as it pertains to aerodynamics. Drag is a force that acts parallel to and in the same direction...
is the dragcoefficient – a dimensionless coefficient related to the object's geometry and taking into account both skin friction and form drag. If the...
where: Cb,Physics, ballistic coefficient as used in physics and engineering m, mass A, cross-sectional area Cd, dragcoefficient ρ {\displaystyle \rho } ...
section lift coefficient and angle of attack. It is also useful to show the relationship between section lift coefficient and dragcoefficient. The section...
Fresnel's draggingcoefficient was directly confirmed by the Fizeau experiment and its repetitions. In general, with the aid of this coefficient the negative...
drag depends on the longitudinal section[clarification needed] of the body. A prudent choice of body profile is essential for a low dragcoefficient....
The drag curve or drag polar is the relationship between the drag on an aircraft and other variables, such as lift, the coefficient of lift, angle-of-attack...
known as the parasitic dragcoefficient and it is the base dragcoefficient at zero lift. CDi is known as the induced dragcoefficient and it is produced...
In fluid dynamics, drag crisis (also known as the Eiffel paradox) is a phenomenon in which dragcoefficient drops off suddenly as Reynolds number increases...
that laminar skin friction drag is smaller than turbulent skin friction drag, for the same inflow. The skin friction coefficient is a strong function of...
test-derived dragcoefficient data can be used for more accurate external ballistic predictions. Some of the Lapua-provided dragcoefficient data shows...
dimensionless wind dragcoefficient which is a repository function for all remaining dependencies. An often used value for the dragcoefficient is C D = 0.0015...
the stationary aether drags light propagating through it with only a fraction of the medium's speed, with a draggingcoefficient f given by f = 1 − 1 n...
where the overall coefficient of drag of the wing or airplane has a constant+quadratic dependence on the aircraft lift coefficient C D = C D 0 + ( C L...
mathematical models address lift and drag by taking into account the density of air, coefficients of lift and drag that result from the shape and area...
C_{\text{d}}} is the dragcoefficient, A{\displaystyle A} is the frontal area, and v{\displaystyle v} is the velocity. The acceleration due to drag is then...
the dragcoefficient and thus drag will be. The faster the ball is moving in the air, the lower the dragcoefficient and drag will be. With lower drag coefficients...
the acceleration due to gravity, C d {\displaystyle C_{d}} is the dragcoefficient, ρ {\displaystyle \rho } is the density of the fluid through which...
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