The Measurement of Wall Shear Stress in the Low-Viscosity Liquids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F13%3A00210723" target="_blank" >RIV/68407700:21220/13:00210723 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjconf/20134501084" target="_blank" >http://dx.doi.org/10.1051/epjconf/20134501084</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20134501084" target="_blank" >10.1051/epjconf/20134501084</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Measurement of Wall Shear Stress in the Low-Viscosity Liquids

Popis výsledku v původním jazyce

The paper is focused on quantitative evaluation of the value of the wall shear stress in liquids with low viscosity by means of the method of the hot film anemometry in a laminar and turbulent flow. Two systems for calibration of probes are described inthe paper. The first of these uses an innovative method of probe calibration using a known flow in a cylindrical gap between two concentric cylinders where the inner cylinder is rotated and a known velocity profile and shear rate, or shear stress profile, is calculated from the Navier-Stokes equations. This method is usable for lower values of the wall shear stress, particularly in the areas of laminar flow. The second method is based on direct calibration of the probes using a floating element. This element, with a size of 120x80 mm, is part of a rectangular channel. This method of calibration enables the probe calibration at higher shear rates and is applicable also to turbulent flow. Values obtained from both calibration methods are

Název v anglickém jazyce

The Measurement of Wall Shear Stress in the Low-Viscosity Liquids

Popis výsledku anglicky

The paper is focused on quantitative evaluation of the value of the wall shear stress in liquids with low viscosity by means of the method of the hot film anemometry in a laminar and turbulent flow. Two systems for calibration of probes are described inthe paper. The first of these uses an innovative method of probe calibration using a known flow in a cylindrical gap between two concentric cylinders where the inner cylinder is rotated and a known velocity profile and shear rate, or shear stress profile, is calculated from the Navier-Stokes equations. This method is usable for lower values of the wall shear stress, particularly in the areas of laminar flow. The second method is based on direct calibration of the probes using a floating element. This element, with a size of 120x80 mm, is part of a rectangular channel. This method of calibration enables the probe calibration at higher shear rates and is applicable also to turbulent flow. Values obtained from both calibration methods are

Druh

D - Stať ve sborníku

CEP obor

JU - Aeronautika, aerodynamika, letadla

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

EFM12 ? Experimental Fluid Mechanics 2012

ISBN

978-80-7372-912-7

ISSN

2101-6275

e-ISSN

—

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

Technical University of Liberec

Místo vydání

Liberec

Místo konání akce

Hradec Králové, Czech Republic

Datum konání akce

20. 11. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000319932200084