| Attributes | Values |
|---|
| rdf:type
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| Description
| - Jev překlápění stavů při vefukování paprsku do dutiny je znám již dlouho. Klíčovou úlohu při tomto jevu hrají velké víry vzniklé mechanismem Kelvin-Helmholtzovy nestability, ty potom způsobují strhávání tekutiny a vyústí v Coandův jev, který způsobí překlopení. Při pohybu paprsku dochází ke zpětnému ovlivnění vírů uvnitř dutiny. V předkládané práci byla popsána souvislost mezi povrchovým třením na stěnách dutiny a vírovými strukturami uvnitř dutiny. Naměřená data byla získána pomocí metody TRPIV pro štíhlost dutiny 2:3 a 3:4, Reynoldsova čísla vztažená k hydraulickému průměru 3000, 11200 a 20000 a pro úhly vpouštění paprsku 0, 5, 10 a 15 stupňů. (cs)
- In a blind trough cavity subject to a jet- impingement, the jet switching phenomenon has been known for decades. The large vortices, formed by the Kelvin- Helmholtz instability play a crucial role in this phenomenon- they are the main cause of the fluid entrainment phenomenon, which consequently evoke the Coanda effect and finally results in the jet switch. As the jet swings, the vortical structure inside the cavity changes together with the impingement point. The aim of this article is to describe the relationship between the wall shear stress, i.e. the motion of the impingement point, and the vortical structure. The analysed data were obtained using the TR PIV system, the cavity aspect ratios 2:3 and 3:4, jet hydraulic diameter based Reynolds numbers 3000, 11200 and 20000, and the impingement angles 0, 5, 10 and 15 deg.
- In a blind trough cavity subject to a jet- impingement, the jet switching phenomenon has been known for decades. The large vortices, formed by the Kelvin- Helmholtz instability play a crucial role in this phenomenon- they are the main cause of the fluid entrainment phenomenon, which consequently evoke the Coanda effect and finally results in the jet switch. As the jet swings, the vortical structure inside the cavity changes together with the impingement point. The aim of this article is to describe the relationship between the wall shear stress, i.e. the motion of the impingement point, and the vortical structure. The analysed data were obtained using the TR PIV system, the cavity aspect ratios 2:3 and 3:4, jet hydraulic diameter based Reynolds numbers 3000, 11200 and 20000, and the impingement angles 0, 5, 10 and 15 deg. (en)
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| Title
| - The relationship between the vortical structure and the wall shear stress in a blind trough cavity subject to a jet impingement
- Vztah mezi povrchovým třením a vírovými strukturami uvnitř dutiny s vefukovaným paprskem (cs)
- The relationship between the vortical structure and the wall shear stress in a blind trough cavity subject to a jet impingement (en)
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| skos:prefLabel
| - The relationship between the vortical structure and the wall shear stress in a blind trough cavity subject to a jet impingement
- Vztah mezi povrchovým třením a vírovými strukturami uvnitř dutiny s vefukovaným paprskem (cs)
- The relationship between the vortical structure and the wall shear stress in a blind trough cavity subject to a jet impingement (en)
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| skos:notation
| - RIV/61388998:_____/08:00311131!RIV09-AV0-61388998
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA101/08/1112), P(IAA2076403), Z(AV0Z20760514)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61388998:_____/08:00311131
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - jet; cavity; vortex; shear stress (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Uruba, Václav
- Knob, Martin
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| http://linked.open...n/vavai/riv/zamer
| |
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