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Numerical investigation of throttle flow under cavitating conditions
KTH, Skolan för teknikvetenskap (SCI), Mekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.
2015 (engelsk)Inngår i: International Journal of Multiphase Flow, ISSN 0301-9322, E-ISSN 1879-3533, Vol. 75, s. 124-136Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The present paper shows the importance of the resolution of large unsteady flow structures in numerical simulations of cavitating flows. Three-dimensional simulations of the flow through a throttle geometry representative for fuel injectors have been performed to characterise the inception and development of cavitation, adopting the implicit Large Eddy Simulation approach. The two-phase flow has been handled by the Volume of Fluid method; whilst the simplified Rayleigh equation has been adopted to handle bubble dynamics. The mathematical model has been solved in the open source C++ toolbox OpenFOAM 2.0.1. Results obtained with the mathematical model are compared with those from RANS-based simulations and validated against experimental measurements. The performed Large Eddy Simulations not only are able to reproduce vortex cavitation, but also give further insight into the complex interaction between cavitation and turbulence through the assessment of the different terms of the vorticity equation.

sted, utgiver, år, opplag, sider
Oxford, 2015. Vol. 75, s. 124-136
Emneord [en]
Cavitation, Large eddy simulation, Multiphase flow, Volume of fluid
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-170190DOI: 10.1016/j.ijmultiphaseflow.2015.05.006ISI: 000359957800010Scopus ID: 2-s2.0-84930651478OAI: oai:DiVA.org:kth-170190DiVA, id: diva2:828245
Merknad

QC 20150630

QC 20150914

Tilgjengelig fra: 2015-06-30 Laget: 2015-06-29 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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