About: Bubbles Rising in Non-uniform Velocity Field

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Bubbles Rising in Non-uniform Velocity Field Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Bubble rise in large volume of liquid is usually characterized by the mean rising velocity. After a short period just after the bubble formation, bubble becomes steady oscillation with frequency of oscillations 5-8 Hz. This oscillation is apparent mainly on the bubble wobbling, on either zig-zag or helical path, and also on variation of the rising velocity. We have developed theoretical model of forces responsible for the instability and periodical bubble movement. Here, the model is applied also to the case of bubble motion in steady laminar shear flow. Two different flow regimes belong to this situation. Smaller nearly spherical bubbles are rotating, which induces a side drift. Larger flat ellipsoidal bubbles oscillate about an inclined position which is responsible for a movement to the opposite side. According to the model, a rear bubble touching the wake region behind a leading bubble is drifted outside. Therefore, occurrence of a column of bubbles in train is less probable. Bubble rise in large volume of liquid is usually characterized by the mean rising velocity. After a short period just after the bubble formation, bubble becomes steady oscillation with frequency of oscillations 5-8 Hz. This oscillation is apparent mainly on the bubble wobbling, on either zig-zag or helical path, and also on variation of the rising velocity. We have developed theoretical model of forces responsible for the instability and periodical bubble movement. Here, the model is applied also to the case of bubble motion in steady laminar shear flow. Two different flow regimes belong to this situation. Smaller nearly spherical bubbles are rotating, which induces a side drift. Larger flat ellipsoidal bubbles oscillate about an inclined position which is responsible for a movement to the opposite side. According to the model, a rear bubble touching the wake region behind a leading bubble is drifted outside. Therefore, occurrence of a column of bubbles in train is less probable. (en) Vzestup bublin ve velkých objemech kapaliny je obvykle charakterizován střední vzestupnou rychlostí. Bubliny začnou oscilovat s frekvencí oscilace kolem 5-8Hz po velmi krátkém čase po jejich vytvoření. Tyto oscilace se projevují pohupováním bublin po jejich cik-cak či helikálních drahách a také na změnách vzestupné rychlosti. Představujeme model sil odpovědných za tuto nestabilitu a periodický pohyb bublin. V tomto případě je model rovněž aplikován na případ laminárního ustáleného smykového toku. (cs)
Title	Bubbles Rising in Non-uniform Velocity Field Bubbles Rising in Non-uniform Velocity Field (en) Stoupající bubliny v nestacionárním rychlostním poli (cs)
skos:prefLabel	Bubbles Rising in Non-uniform Velocity Field Bubbles Rising in Non-uniform Velocity Field (en) Stoupající bubliny v nestacionárním rychlostním poli (cs)
skos:notation	RIV/67985858:_____/08:00310305!RIV09-AV0-67985858
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/07/1110), Z(AV0Z40720504)
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Večeř, Marek
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	358568
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/08:00310305
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bubbles; laminar shear flow (en)
http://linked.open.../riv/klicoveSlovo	bubbles laminar shear flow
http://linked.open...ontrolniKodProRIV	[6DD878AAD3D7]
http://linked.open...v/mistoKonaniAkce	Tatranské Matliare
http://linked.open...i/riv/mistoVydani	Bratislava
http://linked.open...i/riv/nazevZdroje	Proceedings
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Hydrodynamics and transport phenomena in multiphase systems: from microscale to macroscale
http://linked.open...UplatneniVysledku	2008
http://linked.open...iv/tvurceVysledku	Raška, P. Večeř, Marek Wichterle, K.
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2008-05-26 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Investigation of multiphase reacting systems for the design of processes important in synthesis and preparation of novel materials, in energy production and in environmental protection
number of pages	1 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Slovak Society of Chemical Engineering
https://schema.org/isbn	978-80-227-2903-1

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 58 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software