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TRITOK : programska oprema za 3D simulacijo toka nestisljive viskozne tekočine in prenosa toplote
Jure Ravnik, 2007, software

Abstract: Programska oprema simulira tok tekočine in prenos toplote z reševanjem Navier - Stokesovih enačb v prostoru s kombinacijo enoobmočne in večobmočne metode robnih elementov. Enačbe so zapisane v hitrostno vrtinčnem zapisu.
Keywords: računalniška dinamika tekočin, nestisljive viskozne tekočine, tok tekočine, prenos toplote, metoda končnih elementov, programska oprema
Published in DKUM: 10.07.2015; Views: 3237; Downloads: 32
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Primerjava določenega in predoločenega sistema v metodi robnih elementov s podobmočji
Janez Lupše, Leopold Škerget, Jure Ravnik, 2011, published scientific conference contribution

Keywords: nestisljive viskozne tekočine, metoda robnih elementov, tok tekočine
Published in DKUM: 01.06.2012; Views: 1525; Downloads: 43
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Paralelizacija algoritma za simulacijo toka viskozne tekočine
Janez Lupše, Leopold Škerget, Jure Ravnik, 2009, published scientific conference contribution

Abstract: V članku je predstavljen primer paralelizacije algoritma za izvajanje numeričnih simulacij. Algoritem temelji na metodi robnih elementov in je namenjen reševanju problemov iz dinamike tekočin. Za paralelno programiranjeje bil uporabljen MPI standard. Učinki paralelizacije na izračun kinematike ter tlaka so predstavljeni na primeru toka skozi kanal z valovito steno. Uporabili smo tri mreže različnih gostot z namenom primerjave pospešitve izvajanja programa.
Keywords: numerične simulacije, viskozne tekočine, dinamika tekočin, paralelizacija
Published in DKUM: 31.05.2012; Views: 1621; Downloads: 38
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Velocity-vorticity formulation for 3D natural convection in an inclined enclosure by BEM
Jure Ravnik, Leopold Škerget, Zoran Žunič, 2008, original scientific article

Abstract: A natural convection phenomenon is studied in cubic and parallelepipedal inclined enclosures. The simulation of coupled laminar viscous flow and heat transfer is performed using a novel algorithm based on a combination of singledomain Boundary element method (BEM) and subdomain BEM. The algorithm solves the velocity-vorticity formulation of the incompressible Navier-Stokes equations coupled with the energy equation using the Boussinesq approximation.The subdomain BEM is used to solve the kinematics equation, the vorticity transport equation and the energy equation. The boundary vorticity values, which are needed as boundary conditions for the vorticity transport equation, are calculated by singe domain BEM solution of the kinematics equation. Simulation results are compared with benchmark results for a cubic inclined enclosure for Rayleigh number values ▫$10^3Keywords: podobmočna metoda robnih elementov, hitrostno-vrtinčna formulacija, laminarni tok viskozne tekočine, naravna konvekcija, nagnjena kotanja, fluid mechanics, subdomain boundary element method, velocity-vorticity formulation, laminar viscous fluid flow, natural convection, inclined enclosure
Published in DKUM: 31.05.2012; Views: 2767; Downloads: 105
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