en

critical flow

1

Terminological databases

EKI terminibaas Esterm

ID 722199 Last modified 07.03.2014
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Domain chemical methods
critical flow
Usage examples
  • A known quantity of pure gas (carbon monoxide or propane) shall be fed into the CVS system through a calibrated critical orifice. If the inlet pressure is high enough, the flow rate, which is adjusted by means of the critical flow orifice, is independent of the orifice outlet pressure (≡ critical flow).
kritische Strömung
kriittinen virtaus

Limnoloogia sõnastik

ID 615469 Last modified 28.04.2024
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Domain fluid mechanics
kriitiline vool preferred
  • miinimumenergiaga voolamine (s.o rahuliku ja käreda voolamise üleminekuseisund) avasängis (Froude'i arv võrdub ühega)
  • flow in which the Froude number equals unity; under this condition the celerity of small disturbances equals the mean flow velocity
  • flujo para el que el número de Froude es igual a la unidad. En estas condiciones, la celeridad de pequeñas perturbaciones es igual a la velocidad media del flujo
  • ecoulement dont le nombre de Froude est égal à l’unité. Dans ces conditions la vitesse de propagation de petites perturbations est égale à la vitesse moyenne de l’écoulement
  • течение, при котором число Фруда равно единице; в этих условиях скорость распространения малых возмущений равна средней скорости потока
kriitiline vool preferred
kriitiline voolamine

Metroloogia terminibaas

ID 790488 Last modified 12.03.2026
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Domain Standardisation - Metrology
piirvoog preferred
  • voog düüsis, mis on saavutanud düüsi maksimaalse voomahu antud sisselasketingimuste komplekti jaoks
  • vookogus läbi sobiva rõhuvaheseadme juhul, kui mõõtevahendi sissevoo ja väljavoo absoluutrõhu suhe oleks väiksem kui kriitiline väärtus, millest allpool jääb massivoog konstantseks, kui vedeliku väljavoo tingimused (tihedus, temperatuur ja vookiiruse jaotus) ei muutu
  • flow in a nozzle that has attained the maximum flow rate of the nozzle for a given set of inlet conditions
  • flow through a suitable differential pressure device such that ratio of the downstream to the upstream absolute pressure is less than a critical value below which the mass flow-rate remains constant when the upstream fluid conditions (density, temperature and velocity distribution) are unchanged
piirvoog preferred
Usage examples
  • Piirvoog on defineeritud kui voo seisund, kus voomaht muutub sissevoo/väljavoo tingimustest sõltumatuks, st et see on seisund, mille korral rõhu edasine vähendamine ei too kaasa voomahu suurenemist.
critical flow
Usage examples
  • Critical flow is defined as the flow state where the flow rate becomes independent of the outflow conditions, i.e. it is the state where further reduction of pressure does not lead to an increase in flow rate.

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