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| rdf:type
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| Description
| - Příspěvek popisuje výsledky měření součinitele třecích ztrát při proudění kapalin s micelárními příměsi snižujícími tlakové ztráty Arquad S-50, CTAB and CTAC. Byly studovány reologické vlastnosti kapalin obsahující tyto příměsi s pomocí rotačního viskozimetru se souosými válci. Naměřené tlakové ztráty jsou prezentovány ve formě bezrozměrných závislostí součinitele třecích ztrát a Reynoldsova čísla. (cs)
- Experiments were carried out in order to investigate pressure drops due to friction and form for flow of water with micellar drag reducing additives Arquad S-50, CTAB and CTAC, which were prepared in various different concentrations. The rheological behavior of these solutions was studied on a coaxial cylinder rheometer. Standard experimental data evaluation in the form of flow curves disclosed a pattern in which, in the low shear rate range, a nonlinear shear stress decrease with increasing shear rates was observed. For still higher shear rates, shear stress values approached asymptotically constant, shear-independent, values. Therefore, in the low shear rate region, experimental data were described with sufficient accuracy by means of the simple power-law model. A closed-loop experimental stand consisted of a 2700 mm long stabilization section followed either by a 3000 mm long straight, stainless circular tube, (15, 20, and 25 mm I.D.) or with a conventional globe valve.
- Experiments were carried out in order to investigate pressure drops due to friction and form for flow of water with micellar drag reducing additives Arquad S-50, CTAB and CTAC, which were prepared in various different concentrations. The rheological behavior of these solutions was studied on a coaxial cylinder rheometer. Standard experimental data evaluation in the form of flow curves disclosed a pattern in which, in the low shear rate range, a nonlinear shear stress decrease with increasing shear rates was observed. For still higher shear rates, shear stress values approached asymptotically constant, shear-independent, values. Therefore, in the low shear rate region, experimental data were described with sufficient accuracy by means of the simple power-law model. A closed-loop experimental stand consisted of a 2700 mm long stabilization section followed either by a 3000 mm long straight, stainless circular tube, (15, 20, and 25 mm I.D.) or with a conventional globe valve. (en)
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| Title
| - Friction Factors for Flow of Drag Reducing Solutions of Micellar Surfactanct Additives in Straight Circular Pipes and Conventional Globe Valves
- Friction Factors for Flow of Drag Reducing Solutions of Micellar Surfactanct Additives in Straight Circular Pipes and Conventional Globe Valves (en)
- Součinitel třecích ztrát při proudění kapalin s micelárními adititivy zmenšujícími tlakové ztráty přímou kruhovou trubkou a ventilem (cs)
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| skos:prefLabel
| - Friction Factors for Flow of Drag Reducing Solutions of Micellar Surfactanct Additives in Straight Circular Pipes and Conventional Globe Valves
- Friction Factors for Flow of Drag Reducing Solutions of Micellar Surfactanct Additives in Straight Circular Pipes and Conventional Globe Valves (en)
- Součinitel třecích ztrát při proudění kapalin s micelárními adititivy zmenšujícími tlakové ztráty přímou kruhovou trubkou a ventilem (cs)
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| skos:notation
| - RIV/68407700:21220/08:02153464!RIV09-GA0-21220___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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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/68407700:21220/08:02153464
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - drag reduction; micellar surfactant (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...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
| |
| 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
| - Dostál, Martin
- Šesták, Jiří
- Toman, J.
- Myška, Jiří
- Mík, Václav
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open...ain/vavai/riv/wos
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| http://linked.open.../riv/zahajeniAkce
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| issn
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
| - American Institute of Physics
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
| |
| is http://linked.open...avai/riv/vysledek
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