The polymer-micellar aggregates as an efficient reducer of the energy losses in pipe flow

• Autorzy: Matras Z. , Kopiczak B.

Warianty tytułu

PL

Agregaty polimerowo-micelarne jako efektywny reduktor strat energetycznych w przepływach rurowych

• Języki publikacji: EN

Abstrakty

EN

The paper presents polymer-micellar aggregates as efficient drag reducers of the energy losses in straight pipe flow. A small amount of high molecular polymers: Polyethylene Oxide, Cetyltrimetyl Ammonium Bromide surfactant and Sodium Salicylate salt additives, are applied to obtain polymer-micellar aggregates formation. An analysis of how polymermicellar additives influence the shape and character of flow resistance curves has been performed. It is documented that for polymer-micellar solutions the stable transitional zone between, the laminar and the turbulent flows are extended toward higher values of the Reynolds number. Occurrence of the third turbulent zone of drag reduction is also observed.

PL

W artykule przedstawiono agregaty polimerowo-micelarne jako efektywny reduktor strat energetycznych w przepływach rurowych. Do procesu formowania agregatów wykorzystano niewielkie ilości wielkocząsteczkowego politlenku etylenu i substancji powierzchniowo czynnej bromku heksadecylotrójmetyloamoniowego z dodatkiem salicylanu sodu. Dokonano analizy wpływu roztworu polimerowo-micelarnego na kształt i charakter krzywych oporów przepływu. Dla analizowanych roztworów zaobserwowano rozszerzenie stabilnej strefy przejściowej w kierunku większych wartości liczby Reynoldsa. Zaobserwowano również trzecią, turbulentną strefę redukcji oporów przepływu.

Słowa kluczowe

EN

energy losses; pipe flow; flow laminarisation; aggregate

PL

straty energetyczne; przepływ rurowy; laminaryzacja przepływu; agregat

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Mechanika
• Rocznik: 2016
• Tom: Y. 113, iss. 2-M
• Strony: 175--190
• Opis fizyczny: Bibliogr. 28 poz., wykr., rys., wz.

Twórcy

autor

Matras Z.

• Institute of Thermal and Process Engineering, Faculty of Mechanical Engineering, Cracow University of Technology

autor

Kopiczak B.

• Institute of Thermal and Process Engineering, Faculty of Mechanical Engineering, Cracow University of Technology

Bibliografia

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