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Numerical analysis of compressible fluid flow in a channel with sharp contractionsŠkerget, Leopold ; Ravnik, JureThe problem of unsteady fluid flow in a channel with a sharp contraction is studied numerically. An incompressible and full compressible Navier-Stokes set of equations is considered. The thermal ... energy equation is written in its most general form including the Rayleigh and reversible expansion rate terms. Flows for different Reynolds number values are studied in the context of unsteadiness of flow. The influence of the additional nonlinearity due to compressibility of the fluid, dissipation and reversible rate of work are analysed. Also, their influence on the stability of the flow is considered. The boundary element numerical model is used, with the velocity vorticity formulation of the Navier-Stokes equations. The pressure field is evaluated from the pressure Poisson equation. Material properties are taken to be for the ideal fluid (air), and assumed to be pressure and temperature dependent.Source: Boundary elements and other mesh reduction methods XXIX (Str. 179-188)Type of material - conference contribution ; adult, seriousPublish date - 2007Language - englishCOBISS.SI-ID - 11419414
Author
Škerget, Leopold |
Ravnik, Jure
Topics
mehanika fluidov |
dinamika tekočin |
nestacionaren tok |
stisljiv fluid |
kanal z ostrimi zožitvami |
simulacija toka |
hitrostno vrtinčna formulacija |
metoda robnih elementov |
fluid mechanics |
fluid dynamics |
unsteady flow |
compressible fluid |
channel with sharp contractions |
flow simulation |
velocity-vorticity formulation |
boundary element method
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Škerget, Leopold | 06428 |
Ravnik, Jure | 24331 |
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