This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Dynamic pressure" – news · newspapers · books · scholar · JSTOR(October 2022) (Learn how and when to remove this message)
In fluid dynamics, dynamic pressure (denoted by q or Q and sometimes called velocity pressure) is the quantity defined by:[1]
where (in SI units):
q is the dynamic pressure in pascals (i.e., kg/(m*s2),
ρ (Greek letter rho) is the fluid mass density (e.g. in kg/m3), and
u is the flow speed in m/s.
It can be thought of as the fluid's kinetic energy per unit volume.
For incompressible flow, the dynamic pressure of a fluid is the difference between its total pressure and static pressure. From Bernoulli's law, dynamic pressure is given by
where p0 and ps are the total and static pressures, respectively.
In fluid dynamics, dynamicpressure (denoted by q or Q and sometimes called velocity pressure) is the quantity defined by: q = 1 2 ρ u 2 {\displaystyle...
The max q, or maximum dynamicpressure, condition is the point when an aerospace vehicle's atmospheric flight reaches the maximum difference between the...
static pressure refers to a term in Bernoulli's equation written words as static pressure + dynamicpressure = total pressure. Since pressure measurements...
dynamic pressures; this measurement is called the total pressure or stagnation pressure. Since dynamicpressure is referenced to static pressure, it is...
impact pressure (dynamicpressure) is the difference between total pressure (also known as pitot pressure or stagnation pressure) and static pressure. In...
flow, stagnation pressure is equal to the sum of the free-stream static pressure and the free-stream dynamicpressure. Stagnation pressure is sometimes referred...
aviation). However, Bernoulli's equation states: Stagnation pressure = static pressure + dynamicpressure Which can also be written p t = p s + ( ρ u 2 2 ) {\displaystyle...
: 445 Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure. Various units are used to express pressure. Some of these...
P_{\rm {D}}A} where PD is the pressure exerted by the fluid on area A. Here the pressure PD is referred to as dynamicpressure due to the kinetic energy of...
measures the dynamicpressure of the open mouth of a tube with pointed head facing the wind, and the static port measures the static pressure from small...
sealed without air. Pressure head is a component of hydraulic head, in which it is combined with elevation head. When considering dynamic (flowing) systems...
the name implies, it is designed to exert dynamicpressure between the bone fragments to be transfixed. Dynamic compression is achieved either by attaching...
properties of water and seawater, rapidly changing water pressure and temperature, as well as dynamic mechanical stresses encountered by a watch. Every "diver's"...
impact pressure (dynamicpressure) and p is static pressure γ {\displaystyle \gamma \,} is the ratio of specific heat of a gas at a constant pressure to heat...
total pressure and static pressure, provided by the system, to either mechanically or electronically measure dynamicpressure. The dynamicpressure includes...
plus static pressure. Total pressure is also equal to dynamicpressure plus static pressure so, in incompressible flows, stagnation pressure is equal to...
medium causes a deviation (sound pressure, a dynamicpressure) in the local ambient pressure, a static pressure. Sound pressure, denoted p, is defined by p...
distribution. The fluid motion in a vortex creates a dynamicpressure (in addition to any hydrostatic pressure) that is lowest in the core region, closest to...
(and EAS) are the primary reference points, since they describe the dynamicpressure acting on aircraft surfaces regardless of density, altitude, wind,...
system or to count attendance, or for other purposes. Dynamicpressure List of sensors Pressure sensor Bela G. Liptak (ed), Instrument Engineers' Handbook...
the International Standard Atmosphere at which the dynamicpressure is the same as the dynamicpressure at the true airspeed (TAS) and altitude at which...
to maintain a constant air pressure at the intake. This optimal climb/descent profile is called a "constant dynamicpressure path". It is thought that...
local wall shear stress, and q is the free-stream dynamicpressure. For boundary layers without a pressure gradient in the x direction, it is related to the...
At about 80 seconds, the rocket experienced maximum dynamicpressure (max q). The dynamicpressure on a rocket varies with air density and the square of...
direction of the local flow velocity; q {\displaystyle q} is the local dynamicpressure of the fluid ρ {\displaystyle \rho } is the local mass density of the...
{1}{2}}\rho v^{2}}} (the dynamicpressure) is no longer an accurate measure of the difference between stagnation pressure and static pressure. Also, the familiar...
Global Information
