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Description
  • The study is concerned about a mathematical modelling of complex clearance flow in two-dimensional models of a male rotor-housing gap and of an undesirable gap caused by the incorrect contact of rotor teeth in a screw-type machine. Both problems are solved as a non-stationary turbulent compressible Newtonian fluid flow with ideal gas properties. The turbulent flow is assumed to be statistically steady and the mathematical model is described by the non-linear conservative system of the compressible Favre-averaged Navier–Stokes (FANS) equations written in non-dimensional form. Its numerical solution is performed using the cell-centred finite volume formulation of the explicit two-step TVD MacCormack scheme which is proposed by Causon and is defined on a structured quadrilateral grid. The algebraic Baldwin–Lomax turbulence model is implemented into the presented numerical code.
  • The study is concerned about a mathematical modelling of complex clearance flow in two-dimensional models of a male rotor-housing gap and of an undesirable gap caused by the incorrect contact of rotor teeth in a screw-type machine. Both problems are solved as a non-stationary turbulent compressible Newtonian fluid flow with ideal gas properties. The turbulent flow is assumed to be statistically steady and the mathematical model is described by the non-linear conservative system of the compressible Favre-averaged Navier–Stokes (FANS) equations written in non-dimensional form. Its numerical solution is performed using the cell-centred finite volume formulation of the explicit two-step TVD MacCormack scheme which is proposed by Causon and is defined on a structured quadrilateral grid. The algebraic Baldwin–Lomax turbulence model is implemented into the presented numerical code. (en)
  • Tato studie je věnována matematickému modelování proudění plynu rovinným modelem úzké těsnící mezery mezi hlavou zubu hlavního rotoru a skříní a dále pak rovinným modelem nežádoucí vůle vzniklé v důsledku nekorektního dotyku šroubových ploch zubů rotorů šroubového kompresoru. Oba problémy jsou numericky řešeny jako nestacionární turbulentní proudění stlačitelné newtonské tekutiny s vlastnostmi ideálního plynu. Matematický model turbulentního proudění je popsán nelineárním konzervativním systémem stlačitelných Navierových-Stokesových rovnic v bezrozměrovém tvaru středovaných podle Favra. Numerické řešení tohoto systému je provedeno pomocí centrálního explicit (cs)
Title
  • Modelling of complex clearance flow in screw-type machines
  • Modelování proudění úzkými mezerami ve šroubových strojích (cs)
  • Modelling of complex clearance flow in screw-type machines (en)
skos:prefLabel
  • Modelling of complex clearance flow in screw-type machines
  • Modelování proudění úzkými mezerami ve šroubových strojích (cs)
  • Modelling of complex clearance flow in screw-type machines (en)
skos:notation
  • RIV/49777513:23520/07:00000039!RIV08-GA0-23520___
http://linked.open.../vavai/riv/strany
  • 229
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GP101/03/P090)
http://linked.open...iv/cisloPeriodika
  • 0
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 434393
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23520/07:00000039
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • clearance gaps; gas leakage; compressible flow; turbulence; FANS equations; finite volume method; TVD MacCormack scheme (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [BC51800864E2]
http://linked.open...i/riv/nazevZdroje
  • Mathematics and Computers in Simulation
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Vimmr, Jan
issn
  • 0378-4754
number of pages
http://localhost/t...ganizacniJednotka
  • 23520
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