Kinetic Pressure

Definition - What does Kinetic Pressure mean?

Kinetic Pressure is the pressure that would induce an equivalent velocity if applied to move the same fluid through an orifice, so that all pressure energy is converted into kinetic energy. It is a function of fluid density and velocity. This pressure will only be exerted in the direction of fluid flow and is always positive. The kinetic energy per unit volume of a fluid is equal to one-half the product of its density and the square of its velocity.

Petropedia explains Kinetic Pressure

Kinetic pressure, along with static pressure due to elevation, is used in Bernoulli's principle as an energy balance on a closed system. The above terms are used to define the state of a closed system of an incompressible, constant-density fluid.

In an incompressible fluid state dynamics, the kinetic pressure along with velocity pressure is also known as dynamic pressure and is defined as:

  • q is dynamic pressure or kinetic pressure in Pascal
  • p is density of fluid in kg per cubic meter
  • u is flow speed in m/s

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