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# Pressure Coefficient

## The Pressure Coefficient is the ratio of pressure forces to inertial forces.

The pressure coefficient is is the ratio of pressure forces to inertial forces and can be expressed as

Cp = dP / (ρ v2 / 2)

= dh (ρ v2 / 2 g)                                       (1)

where

Cp = pressure coefficient

dp = pressure difference (N)

ρ = fluid density (kg/m3)

v = flow velocity (m/s)

g = acceleration of gravity (= 9.81 m/s2)

The pressure coefficient is important in most fluid flow applications.

## Related Topics

• ### Fluid Mechanics

The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.

## Related Documents

• ### Darcy-Weisbach Equation - Major Pressure and Head Loss due to Friction

The Darcy-Weisbach equation can be used to calculate the major pressure and head loss due to friction in ducts, pipes or tubes.
• ### Euler Number

Introduction to the Euler Number used in fluid mechanics.

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## Citation

• The Engineering ToolBox (2009). Pressure Coefficient. [online] Available at: https://www.engineeringtoolbox.com/pressure-coefficient-d_1486.html [Accessed Day Month Year].

Modify the access date according your visit.

9.19.12