Axisymmetric nozzles with chamfered contraction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F17%3A00477171" target="_blank" >RIV/61388998:_____/17:00477171 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.sna.2017.05.003" target="_blank" >http://dx.doi.org/10.1016/j.sna.2017.05.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sna.2017.05.003" target="_blank" >10.1016/j.sna.2017.05.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Axisymmetric nozzles with chamfered contraction

Popis výsledku v původním jazyce

Paper discusses experimental results obtained in measurements of essentially incompressible flows inaxially symmetric nozzles with inlet entrance shaped as a 45◦ half-angle chamfering. Interest was concentrated on low Reynolds number conditions. Six differently behaving flow regimes, from A to F, were identified. In the regimes B and C, of most importance for engineering applications, the nozzles exhibit lower hydraulic loss than comparable nozzles with smooth, rounded inlet. In the regime C were identified secondary invariants valid for the whole family of nozzles with different lengths. Most probably due to the de-stabilising effect of vortices, shed from the vortex rings formed at the sharpentrance edge made by the chamfering, at increasing Reynolds number the nozzles with chamfered inlet enter quite soon a transition into turbulence.

Název v anglickém jazyce

Axisymmetric nozzles with chamfered contraction

Popis výsledku anglicky

Paper discusses experimental results obtained in measurements of essentially incompressible flows inaxially symmetric nozzles with inlet entrance shaped as a 45◦ half-angle chamfering. Interest was concentrated on low Reynolds number conditions. Six differently behaving flow regimes, from A to F, were identified. In the regimes B and C, of most importance for engineering applications, the nozzles exhibit lower hydraulic loss than comparable nozzles with smooth, rounded inlet. In the regime C were identified secondary invariants valid for the whole family of nozzles with different lengths. Most probably due to the de-stabilising effect of vortices, shed from the vortex rings formed at the sharpentrance edge made by the chamfering, at increasing Reynolds number the nozzles with chamfered inlet enter quite soon a transition into turbulence.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Sensors and Actuators A - Physical

ISSN

0924-4247

e-ISSN

—

Svazek periodika

263

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

147-158

Kód UT WoS článku

000409149900015

EID výsledku v databázi Scopus

2-s2.0-85020827090