D,  Fluid Flow

Dynamic Pressure

The difference between the total and static pressure, which represents the kinetic energy of the flowing fluid. Dynamic pressure is a function of the fluid velocity and its density and can be calculated from:

where Pdynamic is dynamic pressure, lbf/in.2; ρ is density, lbm/ft.3; and v is velocity, ft./sec.

Note that the equation above is expressed in US units. If calculating Pdynamic in Metric units (Pascals), the acceleration of gravity (g) can be omitted.

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