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Coefficient of Drag Formula

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Drag Coefficient 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. Check FAQs

C D = \frac{F D}{q \cdot A}

C_D - Drag Coefficient?F_D - Drag Force?q - Dynamic Pressure?A - Area for Flow?

Coefficient of Drag Example

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Here is how the Coefficient of Drag equation looks like with Values.

Here is how the Coefficient of Drag equation looks like with Units.

Here is how the Coefficient of Drag equation looks like.

0.16 = \frac{80}{10 \cdot 50}

0.16 = \frac{80N}{10Pa \cdot 50m²}

0.16 = \frac{80}{10 \cdot 50}

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Coefficient of Drag Solution

Follow our step by step solution on how to calculate Coefficient of Drag?

FIRST Step Consider the formula

C D = \frac{F D}{q \cdot A}

Next Step Substitute values of Variables

∴

C D = \frac{80N}{10Pa \cdot 50m²}

Next Step Prepare to Evaluate

∴

C D = \frac{80}{10 \cdot 50}

LAST Step Evaluate

∴

C D = 0.16

Coefficient of Drag Formula Elements

Variables

Drag Coefficient

Drag Coefficient 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.

Symbol: C_D

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Drag Coefficient

Drag Force

Drag Force is the resisting force experienced by an object moving through a fluid.

Symbol: F_D

Measurement: ForceUnit: N

Note: Value can be positive or negative.

Formulas to find Drag Force

Dynamic Pressure

Dynamic Pressure is simply a convenient name for the quantity which represents the decrease in the pressure due to the velocity of the fluid.

Symbol: q

Measurement: PressureUnit: Pa

Note: Value should be greater than 0.

Formulas to find Dynamic Pressure

Area for Flow

Area for flow decreases velocity increases and vice versa. For subsonic flows, M < 1, the behavior resembles that for incompressible flows.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Area for Flow

Other formulas in Hypersonic Flow Parameters category

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C p = 2 \cdot θ^{2} \cdot (\frac{Y + 1}{4} + \sqrt{{(\frac{Y + 1}{4})}^{2} + \frac{1}{K^{2}}})

Go Deflection Angle

θ def = \frac{2}{Y - 1} \cdot (\frac{1}{M 1} - \frac{1}{M 2})

Go Drag Force

F D = C D \cdot q \cdot A

How to Evaluate Coefficient of Drag?

Coefficient of Drag evaluator uses Drag Coefficient = Drag Force/(Dynamic Pressure*Area for Flow) to evaluate the Drag Coefficient, The coefficient of drag formula is defined as ratio of drag force acting on the body to the product of dynamic pressure and reference area. Drag Coefficient is denoted by C_D symbol.

How to evaluate Coefficient of Drag using this online evaluator? To use this online evaluator for Coefficient of Drag, enter Drag Force (F_D), Dynamic Pressure (q) & Area for Flow (A) and hit the calculate button.

FAQs on Coefficient of Drag

What is the formula to find Coefficient of Drag?

The formula of Coefficient of Drag is expressed as Drag Coefficient = Drag Force/(Dynamic Pressure*Area for Flow). Here is an example- 0.16 = 80/(10*50).

How to calculate Coefficient of Drag?

With Drag Force (F_D), Dynamic Pressure (q) & Area for Flow (A) we can find Coefficient of Drag using the formula - Drag Coefficient = Drag Force/(Dynamic Pressure*Area for Flow).

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