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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 quantifies the drag or resistance of an object in a fluid environment. Any object moving through a fluid experiences drag - the net force in the direction of flow due to pressure and shear stress forces on the surface of the object. The drag force can be expressed as: Fd = cd 1/2 ρ v2 A (1) where.
Jul 28, 2022 · Learn how to calculate and use the drag coefficient to model the drag of any object in different flow conditions. Understand the factors that affect the drag coefficient, such as air viscosity, compressibility, Reynolds number, and aspect ratio.
Jul 28, 2022 · Learn how to calculate drag using the drag coefficient, density, velocity, and reference area. Find out how drag depends on the shape, inclination, and compressibility of the body.
Feb 20, 2022 · Table lists some typical drag coefficients for a variety of objects. Notice that the drag coefficient is a dimensionless quantity. At highway speeds, over 50% of the power of a car is used to overcome air drag. The most fuel-efficient cruising speed is about 70–80 km/h (about 45–50 mi/h).
Learn about the drag force that acts on any object moving through a fluid or air. The web page explains the factors that affect the drag force, such as the shape, speed, and density of the object and the fluid.
Sep 12, 2022 · Table 6.7.1 lists some typical drag coefficients for a variety of objects. Notice that the drag coefficient is a dimensionless quantity. At highway speeds, over 50% of the power of a car is used to overcome air drag. The most fuel-efficient cruising speed is about 70–80 km/h (about 45–50 mi/h).
