Computational modelling of cavitation in simple geometries, but complex flows

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU111795" target="_blank" >RIV/00216305:26210/14:PU111795 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Computational modelling of cavitation in simple geometries, but complex flows

Original language description

Cavitation occurs when local pressure in flowing liquid drops below saturated vapor pressure. If the resulting vapor bubbles are transported to regions of higher pressure then sudden condensation follows, which is accompanied by emission of pressure andacoustic waves. Above described process leads to cavitation erosion and consequently to shorter service time of the hydraulic machines. Cavitation can be modeled by current CFD tools with simplified cavitation models. Computational simulations revealed that proper capturing of the underlying one-phase flow field is crucial to obtain correct vorticity distribution. Clouds filled with vapor are born from regions of concentrated vorticity and shed downstream. Only advanced turbulence models (Reynolds Stress Model, Scale Adaptive Simulation) are able to predict vorticity field and development of the unsteady swirling flow. Increased vorticity generation in two-phase flows is caused by additional term in vorticity equation - baroclinic torqu

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JE - Non-nuclear power engineering, energy consumption and utilization

OECD FORD branch

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Project

<a href="/en/project/GA13-23550S" target="_blank" >GA13-23550S: Experimental research and mathematical modelling of unsteady phenomena induced by hydrodynamic cavitation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

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

Article name in the collection

Computational mechanics 2014; book of extended abstracts

ISBN

978-80-261-0429-2

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

1-2

Publisher name

FAV ZČU Plzeň

Place of publication

Plzeň

Event location

špičák

Event date

Nov 3, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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