critical velocity

critical velocity

[′krid·ə·kəl və′läs·əd·ē]
(aerospace engineering)
In rocketry, the speed of sound at the conditions prevailing at the nozzle throat. Also known as throat velocity.
(cryogenics)
The velocity of a superfluid in very narrow channels (on the order of 10-5 centimeter), which is nearly constant. Also known as critical speed.
(fluid mechanics)
The speed of flow equal to the local speed of sound. Also known as critical speed.
The speed of fluid flow through a given conduit above which it becomes turbulent.

critical velocity

Of a liquid flowing in a pipe, the velocity at which the flow changes from laminar flow to turbulent flow.
References in periodicals archive ?
The critical velocity required to resist smoke backlayering increases with the increase in the HRR of the fire but levels off at about 3 m/s (9.
Can Critical Velocity and Anaerobic Swimming Capacity be Determined from Estimated Performance Times in Collegiate Swimmers?
conducted a gas flow shear stress experiment about the critical velocity to remove deposit based on soot particle sizes [21].
4)shows the effect of frame angle on the critical velocity of fluid.
A superfluid can flow with no friction up to a maximum speed, called "superfluid critical velocity.
In tunnel fires research, the critical velocity and backlayering length due to mechanical ventilation systems (Kunsch 1998; Wu, Bakar 2000; Hwang, Edwards 2005; Roh et al.
The method of calculating a critical velocity will be shown to be applicable at any point in the well.
Critical velocity is the minimum velocity of the ventilation airflow moving toward the fire within a tunnel required to prevent back-layering at the fire site.
11] have applied the CP concept to competitive swimming as the critical velocity (CV).
The critical velocity for entrainment depends upon physical properties of the oil (e.
With gas applications, noise is significantly reduced because orifices on each stage are sized to keep the flow of the gas below critical velocity.

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