000003408 001__ 3408
000003408 005__ 20141118153400.0
000003408 04107 $$acze
000003408 046__ $$k2005-05-09
000003408 100__ $$aZima, P.
000003408 24500 $$aModeling the effects of cavitation in pumps

000003408 24630 $$n11.$$pENGINEERING MECHANICS 2005
000003408 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Brno
000003408 506__ $$arestricted
000003408 520__ $$2eng$$aThe paper presents the latest results of modeling of the erosion effects of cavitation bubbles on the blades of a water pump. Cavitation erosion is caused by the collapse of a great number of cavitation bubbles in the close vicinity of the blade surface. The occurence of cavitation results in decreased efficiency of the pump and undesired vibration. More importantly, the erosion of microscopic particles of blade material may result in pump failure. The model presented in this article is based on the estimation of the forces acting on the liquid surrounding the collapsing bubble. The model has been tested using the three-dimensional numerical solver used in SIGMA Research and Development Institute, s.r.o. for the simulation of water pump flows. The results are compared with the image of the blade damage in the real pump after a long operation. The results have confirmed that the ability of the model to determine the regions of highest risk of cavitation damage is satisfactory.

000003408 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003408 653__ $$a

000003408 7112_ $$aENGINEERING MECHANICS 2005$$cSvratka (CZ)$$d2005-05-09 / 2005-05-12$$gEM2005
000003408 720__ $$aZima, P.$$iMaršík, F.$$iSedlář, M.
000003408 8560_ $$ffischerc@itam.cas.cz
000003408 8564_ $$s288053$$uhttps://invenio.itam.cas.cz/record/3408/files/Zima-PT.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000003408 962__ $$r3238
000003408 980__ $$aPAPER