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Description
  • The software serves homogenized transmission conditions imposed on the interface plane separating two halfspaces occupied by the acoustic medium. The conditions are obtained as the two-scale homogenization limit of the standard acoustic problem imposed in the layer perforated by a sieve-like obstacle with periodic structure. Both the characteristic scale of the perforations and the layer thickness are parametrized by a small parameter tending to 0. The limit model involving some homogenized coefficients governs the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the transverse acoustic velocity. This novel approach allows for treatment of complicated designs of perforations and presents an alternative to the usual description of the acoustic impedance, which relies on a rough averaging the quasi-experimental data.
  • The software serves homogenized transmission conditions imposed on the interface plane separating two halfspaces occupied by the acoustic medium. The conditions are obtained as the two-scale homogenization limit of the standard acoustic problem imposed in the layer perforated by a sieve-like obstacle with periodic structure. Both the characteristic scale of the perforations and the layer thickness are parametrized by a small parameter tending to 0. The limit model involving some homogenized coefficients governs the interface discontinuity of the acoustic pressure associated with the two halfspaces and the magnitude of the transverse acoustic velocity. This novel approach allows for treatment of complicated designs of perforations and presents an alternative to the usual description of the acoustic impedance, which relies on a rough averaging the quasi-experimental data. (en)
  • Software slouží k výpočtu transmisních podmínek předepsaných na rozhraní dvou poloprostorů vyplněných akustickým médiem (tekutinou). Podmínky jsou získány dvouškálovou homogenizací standardní akustické úlohy uvažované ve vrstvě perforované neprostupnou překážkou mající periodickou strukturu. Charakteristický rozměr periody perforace jakož i tlouštka vrstvy jsou úměrné malému parametru. Limitní analýzou modelu vzheldem k tomuto parametru je získán model obsahující homogenizované koeficienty. Model upravuje vztah mezi transverzní akustickou rychlostí, akustickým tlakem ve vrstvě a nespojitostí akustického tlaku makromodelu okolního prostředí. Tento nový přístup umožnuje modelovat akustickou impedanci pro slo (cs)
Title
  • Software for computing homogenized coefficients of acoustic transmission on perforated interfaces for 2D problems
  • Software pro výpočet homogenizovaných koeficientů akustické transmise na perforovaných rozhraních pro 2D úlohy (cs)
  • Software for computing homogenized coefficients of acoustic transmission on perforated interfaces for 2D problems (en)
skos:prefLabel
  • Software for computing homogenized coefficients of acoustic transmission on perforated interfaces for 2D problems
  • Software pro výpočet homogenizovaných koeficientů akustické transmise na perforovaných rozhraních pro 2D úlohy (cs)
  • Software for computing homogenized coefficients of acoustic transmission on perforated interfaces for 2D problems (en)
skos:notation
  • RIV/49777513:23640/07:00000055!RIV08-MSM-23640___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • N
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...onomickeParametry
  • Software umožní snížení nákladů na vývoj perforací požadovaných akustických vlastností.
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 450804
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23640/07:00000055
http://linked.open...terniIdentifikace
  • NTC-SW-05-07
http://linked.open...riv/jazykVysledku
http://linked.open...vai/riv/kategorie
http://linked.open.../riv/klicovaSlova
  • acoustic transmission; perforated duct; two scale homogenization; homogenized impedance (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [FF3D4D066F2A]
http://linked.open.../licencniPoplatek
http://linked.open...okalizaceVysledku
  • ŠKODA Auto a.s.
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...echnickeParametry
  • Prostředek pro modelování částí technických zařízení. Metodika umožní formulaci úlohy optimalizace akustické impedance volbou geometrie perforace.
http://linked.open...iv/tvurceVysledku
  • Lukeš, Vladimír
  • Rohan, Eduard
http://linked.open...avai/riv/vlastnik
http://linked.open...itiJinymSubjektem
http://localhost/t...ganizacniJednotka
  • 23640
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