Tensors of added effect of the liquid in a thin hydrophobic gap

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU121479" target="_blank" >RIV/00216305:26210/16:PU121479 - isvavai.cz</a>

Výsledek na webu

<a href="http://aip.scitation.org/doi/abs/10.1063/1.4963034" target="_blank" >http://aip.scitation.org/doi/abs/10.1063/1.4963034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4963034" target="_blank" >10.1063/1.4963034</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tensors of added effect of the liquid in a thin hydrophobic gap

Popis výsledku v původním jazyce

The article presents a mathematical model of the interaction between a rotating shaft and an incompressible fluid. The mathematical model includes the axially traversed hydrodynamic sealing gap of hydraulic machines. A method is shown for the identification of additional effects of the fluid acting on the rotor of the machine. The interaction is expressed by matrices of stiffness and damping. The shown problems were solved with the assumption of a hydrophilic surface with zero velocity vectors on the motionless surface and zero relative velocity vectors on the moving surface. Owing to the technological progress in the area of surface layers it is not necessary anymore to assume the surface of the solid/liquid interaction to be hydrophilic. It is possible to generalize the solution of hydrodynamic problems and assume hydrophobic character of the surface in the solid/liquid interaction. That means slipping of the liquid on the hydrophobic surface. Comparison of the effect of the surface properties is shown within the article.

Název v anglickém jazyce

Tensors of added effect of the liquid in a thin hydrophobic gap

Popis výsledku anglicky

The article presents a mathematical model of the interaction between a rotating shaft and an incompressible fluid. The mathematical model includes the axially traversed hydrodynamic sealing gap of hydraulic machines. A method is shown for the identification of additional effects of the fluid acting on the rotor of the machine. The interaction is expressed by matrices of stiffness and damping. The shown problems were solved with the assumption of a hydrophilic surface with zero velocity vectors on the motionless surface and zero relative velocity vectors on the moving surface. Owing to the technological progress in the area of surface layers it is not necessary anymore to assume the surface of the solid/liquid interaction to be hydrophilic. It is possible to generalize the solution of hydrodynamic problems and assume hydrophobic character of the surface in the solid/liquid interaction. That means slipping of the liquid on the hydrophobic surface. Comparison of the effect of the surface properties is shown within the article.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/GA15-06621S" target="_blank" >GA15-06621S: Modelování inteligentních tlumicích prvků rotujících soustav využívajících fyzikálních vlastností magnetoreologických kapalin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

THE MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMOMECHANICS (35MDFMT): Proceedings of the 35th Meeting of Departments of Fluid Mechanics and Thermomechanics

ISBN

978-0-7354-1426-6

ISSN

—

e-ISSN

—

Počet stran výsledku

235

Strana od-do

„020012-1“-„020012-6“

Název nakladatele

AIP Publishing

Místo vydání

Šamorín – Čilistov, Slovak Republic

Místo konání akce

Šamorín – Čilistov

Datum konání akce

20. 6. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000389447600012