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Что (кто) такое drag coefficient - определение

DIMENSIONLESS PARAMETER TO QUANTIFY FLUID RESISTANCE

Coefficient of drag; Drag co-efficient; Drag Coefficient; Coefficient of Drag; Drag constant; Bluff body

$Flow around a plate, showing stagnation. The force in the upper configuration is equal to<br /><math>F = \frac {1}{2} \rho u^2 A</math><br /> and in the lower configuration<br /><math>F_d = \tfrac12 \rho u^2 c_d A</math>$

Automobile drag coefficient

COMMON MEASURE IN AUTOMOTIVE DESIGN AS IT PERTAINS TO AERODYNAMICS

Automobile drag coefficients; Frontal area; Car drag coefficient

The drag coefficient 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 as the airflow.

https://en.wikipedia.org/wiki/Automobile_drag_coefficient

Zero-lift drag coefficient

AERODYNAMIC DIMENSIONALESS PARAMETER

Zero-lift drag; Zero-lift drag coefficient area:

In aerodynamics, the zero-lift drag coefficient C_{D,0} is a dimensionless parameter which relates an aircraft's zero-lift drag force to its size, speed, and flying altitude.

https://en.wikipedia.org/wiki/Zero-lift_drag_coefficient

Synchronous coefficient of drag alteration

Synchronous Coefficient of Drag Alteration

Synchronous coefficient of drag alteration (SCODA) is a biotechnology method for purifying, separating and/or concentrating bio-molecules. SCODA has the ability to separate molecules whose mobility (or drag) can be altered in sync with a driving field.

https://en.wikipedia.org/wiki/Synchronous_coefficient_of_drag_alteration

Википедия

Drag coefficient

In fluid dynamics, the drag coefficient (commonly denoted as: $c_{\mathrm {d} }$ , $c_{x}$ or $c_{\rm {w}}$ ) 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.

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. The drag coefficient of a complete structure such as an aircraft also includes the effects of interference drag.

https://en.wikipedia.org/wiki/Drag coefficient