Gonilni mehanizmi kavitacijskega vrtinca v vstopnem vodu radialne črpalke

Andrej Predin (Author), Ignacijo Biluš (Author)

Abstract

ǂV ǂprispevku je podana analiza gonilnih mehanizmov in tlačnih utripanj povezanih s pojavom kavitacijskega vrtinca v vstopnem vodu radialne črpalke. Kavitacijski vrtinec je rezultat interakcije številnih zapletenih sekundarnih tokovnih pojavov, ki nastopijo kot posledica obratovanja s podoptimalnimi pretoki v kavitacijskem obratovalnem režimu. Izvedene in predstavljene so tudi meritve tlačnih utripanj v vstopnem vodu radialne črpalke na različnih razdaljah od rotorskega ustja na sklenjeni kavitacijski merilni progi. Meritve so izvedene pri različnih vrtilnih hitrostih in različnih tlakih nad spodnjo vodno gladino. Podani so tudi rezultat frekvenčne analize posnetih tlačnih utripanj.

Keywords

radial pumps;cavitation;swirl;operating regime;pressure pulsation measurements;

Data

Language:	Slovenian
Year of publishing:	2001
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	Association of Mechanical Engineers and Technicians of Slovenia et al.
UDC:	621.67:532.5
COBISS:	4767003
ISSN:	0039-2480
Parent publication:	Strojniški vestnik
Views:	904
Downloads:	18
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	ǂThe ǂdriving mechanisms of the cavitation swirl in the entrance pipe of a radial pump
Secondary abstract:	Analyses are given of the driving mechanisms and pressure pulsations relating to the cavitation swirl in the entrance pipe of a radial pumpe. The appearance of cavitation swirl is a result of a complicated secondary flow interaction, which appears as a consequence of the pump operating at small, under-optimum capacities in the cavitation operating regime. Results of the flow pressure pulsation measurements in the entrance pipe of the radial pump are reported. These measurements were made at different distances from the impeller eye, in the upstream direction at the closed cavitation measuring test ring with the pump operating at different impeller speeds and at different values of gas (air) pressure over the lower liquid (water) position. Results are also given for the frequency analyses of the measured flow pressure.
Secondary keywords:	radial pumps;cavitation;swirl;operating regime;pressure pulsation measurements;črpalke radialne;vrtinci kavitacijski;režimi obratovanja;meritve tlačnih utripov;
URN:	URN:NBN:SI
Type (COBISS):	Not categorized
Pages:	str. 234-247
Volume:	ǂLetn. ǂ47
Issue:	ǂšt. ǂ6
Chronology:	2001
ID:	1748417