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Lattice Boltzmann Simulation of Cavitating Flows

Published online by Cambridge University Press:  03 June 2015

Giacomo Falcucci ,
Stefano Ubertini ,
Gino Bella  and
Sauro Succi
Giacomo Falcucci*
Affiliation:
Department of Technologies, University of Naples “Parthenope”, Centro Direzionale – Isola C4, 80143 Naples, Italy
Stefano Ubertini*
Affiliation:
DEIM – Industrial Engineering School, University ofTuscia, Largo dell’Universita s.n.c., 01100, Viterbo, Italy
Gino Bella*
Affiliation:
Department of Mechanical Engineering, University of “Tor Vergata”, Viale Politecnico, Rome, Italy
Sauro Succi*
Affiliation:
Istituto per le Applicazioni del Calcolo – CNR, Via dei Taurini, 00100 Roma, Italy
*
Corresponding author.Email:giacomo.falcucci@uniparthenope.it
Email:stefano.ubertini@uniparthenope.it
Email:bella@uniroma2.it
Email:succi@iac.cnr.it
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Abstract

The onset of cavitating conditions inside the nozzle of liquid injectors is known to play a major role on spray characteristics, especially on jet penetration and break-up. In this work, we present a Direct Numerical Simulation (DNS) based on the Lattice Boltzmann Method (LBM) to study the fluid dynamic field inside the nozzle of a cavitating injector. The formation of the cavitating region is determined via a multi-phase approach based on the Shan-Chen equation of state. The results obtained by the LBM simulation show satisfactory agreement with both numerical and experimental data. In addition, numerical evidence of bubble break-up, following upon flow-induced cavitation, is also reported.

Keywords

47.11.-j47.65.CbLattice Boltzmannmultiphase flowscavitationliquid spraynozzle
Type
Research Article
Information
Communications in Computational Physics , Volume 13 , Issue 3 , March 2013 , pp. 685 - 695
Copyright
Copyright © Global Science Press Limited 2013

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