Počet záznamů: 1
Axisymmetric nozzles with chamfered contraction
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SYSNO ASEP 0477171 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Axisymmetric nozzles with chamfered contraction Tvůrce(i) Tesař, Václav (UT-L) RID Celkový počet autorů 1 Zdroj.dok. Sensors and Actuators A - Physical. - : Elsevier - ISSN 0924-4247
Roč. 263, August (2017), s. 147-158Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova nozzles ; chamfering ; invariant Vědní obor RIV BK - Mechanika tekutin Obor OECD Fluids and plasma physics (including surface physics) Institucionální podpora UT-L - RVO:61388998 UT WOS 000409149900015 EID SCOPUS 85020827090 DOI 10.1016/j.sna.2017.05.003 Anotace 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. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2018
Počet záznamů: 1