Leopold Škerget (Author), Jure Ravnik (Author)

Abstract

The problem of unsteady compressible fluid flow in an enclosure induced by thermoacoustic waves is studied numerically. Full compressible set of Navier-Stokes equations are considered and numerically solved by boundary-domain integral equations approach coupled with wavelet compression and domain decomposition to achieve numerical efficiency. The thermal energy equation is written in its most general form including the Rayleigh and reversible expansion rate terms. Both, the classical Fourier heat flux model and wave heat conduction model are investigated. The velocity-vorticity formulation of the governing Navier-Stokes equations is employed, while the pressure field is evaluated from the corresponding pressure Poisson equation. Material properties are taken to be for the perfect gas, and assumed to be pressure and temperature dependent.

Keywords

tok stisljive tekočine;metoda robnih elementov;termoakustični valovi;hitrostno vrtinčna formulacija;compressible fluid flow;boundary element method;thermoacoustic waves;velocity-vorticity fomulation;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 532.7:519.61/.64
COBISS: 13062934 Link will open in a new window
ISSN: 0955-7997
Views: 1822
Downloads: 83
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary keywords: tok stisljive tekočine;metoda robnih elementov;termoakustični valovi;hitrostno vrtinčna formulacija;
URN: URN:SI:UM:
Type (COBISS): Not categorized
Pages: str. 561-571
Volume: ǂVol. ǂ33
Issue: ǂno. ǂ4
Chronology: Apr. 2009
Keywords (UDC): mathematics;natural sciences;naravoslovne vede;matematika;physics;fizika;fluid mechanics in general;mechanics of liquids (hydromechanics);mehanika tekočin;mehanika kapljevin;kinetic theory of liquids;osmosis;solution and solutions;mathematics;natural sciences;naravoslovne vede;matematika;mathematics;matematika;computational mathematics;numerical analysis;računska matematika;numerična analiza;
DOI: 10.1016/j.enganabound.2008.08.003
ID: 990853