Naslov
Experimental Research on Affinity Law for Trimmed Impellers

Autori
Šavar, Mario ; Džijan, Ivo ; Krizmanić, Severino

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
The 6th International Congress of Croatian Society of Mechanics / Smojver, Ivica ; Sorić, Jurica - Zagreb : Stega tisak, 2009, 111-111

ISBN
978-953-7539-10-8

Skup
The 6th International Congress of Croatian Society of Mechanics

Mjesto i datum
Dubrovnik, Hrvatska, 30 septemer - 2 october

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Hydraulic machinery; impeller trimming; afinity law

Sažetak
Abstract. Impeller trimming is a common practice performed by pump manufacturers and users when it is necessary to adjust the centrifugal pump head and flow to the actual needs. The trimmed pump is not strictly similar to the initial pump because only a few parameters are modified, while all the others remain unchanged. In spite of this, the assumption of valid similarity was made here and examined through a series of experiments. A centrifugal pump impeller of low specific speed (nsp = 19, 745 r.p.m. m0.75 s-0.5) was trimmed and tested successively. For this particular pump, the influence of disregarded similarity can be estimated to  3, 94% for the pump head and to  5, 24% for the power, both with a 95% statistical certainty.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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