Numerical analysis of unsteady cavitating flow around drum of multistage pump

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28645413%3A_____%2F16%3AN0000004" target="_blank" >RIV/28645413:_____/16:N0000004 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5293/IJFMS.2016.9.2.119" target="_blank" >http://dx.doi.org/10.5293/IJFMS.2016.9.2.119</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5293/IJFMS.2016.9.2.119" target="_blank" >10.5293/IJFMS.2016.9.2.119</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical analysis of unsteady cavitating flow around drum of multistage pump

Popis výsledku v původním jazyce

This work presents the numerical investigation of an unsteady cavitating flow around a balancing drum of a multistage pump. The main attention is focused on the cavitation phenomena, which occur in the rear part of the drum clearance, cause the erosion of the drum material and influence the pressure losses and the flow rate through the clearance. The one-way coupling of the URANS equations and the full Rayleigh-Plesset equation is employed to analyse the flow field as well as the dynamics of cavitating bubbles. The numerical simulations show that the erosion processes are highly influenced by shaft vibrations, namely by periodic deformations of the annular clearance in time. The calculated results are verified by erosion tests on a real pump.

Název v anglickém jazyce

Numerical analysis of unsteady cavitating flow around drum of multistage pump

Popis výsledku anglicky

This work presents the numerical investigation of an unsteady cavitating flow around a balancing drum of a multistage pump. The main attention is focused on the cavitation phenomena, which occur in the rear part of the drum clearance, cause the erosion of the drum material and influence the pressure losses and the flow rate through the clearance. The one-way coupling of the URANS equations and the full Rayleigh-Plesset equation is employed to analyse the flow field as well as the dynamics of cavitating bubbles. The numerical simulations show that the erosion processes are highly influenced by shaft vibrations, namely by periodic deformations of the annular clearance in time. The calculated results are verified by erosion tests on a real pump.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10102 - Applied mathematics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

International Journal of Fluid Machinery and Systems

ISSN

1882-9554

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

9

Strana od-do

119-128

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-84989182912