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Statements

Subject Item
n2:RIV%2F67985874%3A_____%2F01%3A11013074%21RIV%2F2003%2FAV0%2FA11003%2FN
rdf:type
skos:Concept n9:Vysledek
dcterms:description
A zwitterionic and a cationic surfactant were compared concerning their effectiveness in drag reduction. Both reach even lower friction factors than can be determined by the known maximum drag reduction asymptote in polymers. It is shown that both the maximum effectiveness and the range of surfactant activity depend not only on the temperature and concentration of the solution, but also on the length of the direct entering section and on the quality of water. The influence of the particular locality of the flow rate regulation is also notified. A zwitterionic and a cationic surfactant were compared concerning their effectiveness in drag reduction. Both reach even lower friction factors than can be determined by the known maximum drag reduction asymptote in polymers. It is shown that both the maximum effectiveness and the range of surfactant activity depend not only on the temperature and concentration of the solution, but also on the length of the direct entering section and on the quality of water. The influence of the particular locality of the flow rate regulation is also notified.
dcterms:title
The effect of a zwitterionic and cationic surfactant in turbulent flows. The effect of a zwitterionic and cationic surfactant in turbulent flows.
skos:prefLabel
The effect of a zwitterionic and cationic surfactant in turbulent flows. The effect of a zwitterionic and cationic surfactant in turbulent flows.
skos:notation
RIV/67985874:_____/01:11013074!RIV/2003/AV0/A11003/N
n4:strany
229;236
n4:aktivita
n15:Z
n4:aktivity
Z(AV0Z2060917)
n4:cisloPeriodika
2
n4:dodaniDat
n13:2003
n4:domaciTvurceVysledku
n14:8556717 n14:4931874
n4:druhVysledku
n11:J
n4:duvernostUdaju
n12:S
n4:entitaPredkladatele
n6:predkladatel
n4:idSjednocenehoVysledku
678576
n4:idVysledku
RIV/67985874:_____/01:11013074
n4:jazykVysledku
n17:eng
n4:klicovaSlova
turbulent flows; zwitterionic surfactants; cationic surfactants
n4:klicoveSlovo
n10:cationic%20surfactants n10:zwitterionic%20surfactants n10:turbulent%20flows
n4:kodStatuVydavatele
DE - Spolková republika Německo
n4:kontrolniKodProRIV
[0EAD35AA768C]
n4:nazevZdroje
Experiments in Fluids
n4:obor
n16:BK
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:pocetUcastnikuAkce
0
n4:pocetZahranicnichUcastnikuAkce
0
n4:rokUplatneniVysledku
n13:2001
n4:svazekPeriodika
30
n4:tvurceVysledku
Myška, Jiří Chára, Zdeněk
n4:zamer
n5:AV0Z2060917
s:issn
0723-4864
s:numberOfPages
8