dynamic pressure


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dynamic pressure

[dī¦nam·ik ′presh·ər]
(fluid mechanics)
The pressure that a moving fluid would have if it were brought to rest by isentropic flow against a pressure gradient. Also known as impact pressure; stagnation pressure; total pressure.
The difference between the quantity in the first definition and the static pressure.

dynamic pressure

The pressure on the inner surface of a pipe when water flows through it; this pressure is in excess of that when the water is at rest.

dynamic pressure

The pressure of a fluid resulting from its motion, equal to one-half the fluid density (ρ) times the fluid velocity (v) squared (q = ¼ρV2). In aerodynamic calculations, dynamic pressure is represented by the symbol q.
References in periodicals archive ?
10, can be obtained to illustrate the dynamic pressure change of air film when the air gap in z-axis lower spherical surface of joint is set at 0.5 s, 2 s and 5 s, respectively.
Here, 14,470 is a system-dependent numerical coefficient, [delta]P is the dynamic pressure difference in in.
Tables 1 and 2 show that the damage strength of concrete is the largest for specimens subjected to dynamic pressure, followed closely by the strength of specimens under static pressure.
The solution is obtained at the conditions of Ma = 0.8, AOA =1.5[degrees], Reynolds number Re = 7 million, and dynamic pressure Q = 40,055.4 Pa.
Data from dynamic pressure sensors was acquired using HBM DAQ Quantum MX410.
By using the piezoresistive pressure sensing/monitoring system, we successfully verified the general inference on the finger and palm dynamic pressure distribution in the moment while the basketball players throw the ball (i.e., during ball-shooting).
The reason of the drilling speed of NFB being higher than that of NDB at low pressure was the better debris carrying capacity of NFB than that of NDB from the simulation analysis of dynamic pressure inside surface.
For ball valve and slab gate valve designs with sealed cavities, dynamic pressure sensors are used to test the valves for leaking valve seats.
Not knowing the exact dynamic pressure calculation method applied on the WT test, we have tried following three different dynamic pressure correction methods
Dynamic pressure is essential to produce foaming materials by means of gas dissolution using inert gas (carbon dioxide or nitrogen) as physical blowing agent.
PCB Group Inc., headquartered in Depew, New York, was founded in 1967 as a manufacturer of piezoelectric quartz sensors, accelerometers, and associated electronics for the measurement of dynamic pressure, force, and vibration that enhance the productivity, safety, reliability and efficiency of their customers' products and processes.
SKYACTIV-G 2.5T overcomes these problems with the Dynamic Pressure Turbo, the world's first turbocharging system that can vary the degree of exhaust pulsation depending on engine speed, and a cooled exhaust gas recirculation (EGR) system that allows the engine to maintain the ideal air-fuel ratio(3) over a wider output range.

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