Three-segment electrodiffusion probes for wall shear rate measurements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F18%3A00330163" target="_blank" >RIV/68407700:21220/18:00330163 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.researchtrends.net/tia/abstract.asp?in=0&vn=20&tid=19&aid=6258&pub=2018&type=" target="_blank" >http://www.researchtrends.net/tia/abstract.asp?in=0&vn=20&tid=19&aid=6258&pub=2018&type=</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Three-segment electrodiffusion probes for wall shear rate measurements

Popis výsledku v původním jazyce

Electrodiffusion (ED) probes, flush-mounted into a wall, present a unique method for wall shear rate measurements. This method is based on the measurement of the limiting diffusion current. It is a non-invasive technique reflecting the phenomena at the wall, which cannot be captured by another technique. Wall shear rate is calculated from the measured current. Using three-segment probes, the components of wall shear rate can be measured. The underlying theory and new practical formulas for evaluation of wall shear rate and its components from measured segment currents are described. The use of three-segment and simple ED probes is documented using Taylor-Couette-Poiseuille flow. Three types of flow are studied: the Taylor vortices, helix winding in the same direction as the base flow (right spiral) and helix winding in the opposite direction (left spiral). The distributions of tangential and axial components of shear rate obtained by a three-segment probe at the wall of the outer steady cylinder are complemented by the photos of flow structures.

Název v anglickém jazyce

Three-segment electrodiffusion probes for wall shear rate measurements

Popis výsledku anglicky

Electrodiffusion (ED) probes, flush-mounted into a wall, present a unique method for wall shear rate measurements. This method is based on the measurement of the limiting diffusion current. It is a non-invasive technique reflecting the phenomena at the wall, which cannot be captured by another technique. Wall shear rate is calculated from the measured current. Using three-segment probes, the components of wall shear rate can be measured. The underlying theory and new practical formulas for evaluation of wall shear rate and its components from measured segment currents are described. The use of three-segment and simple ED probes is documented using Taylor-Couette-Poiseuille flow. Three types of flow are studied: the Taylor vortices, helix winding in the same direction as the base flow (right spiral) and helix winding in the opposite direction (left spiral). The distributions of tangential and axial components of shear rate obtained by a three-segment probe at the wall of the outer steady cylinder are complemented by the photos of flow structures.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Current Topics in Electrochemistry

ISSN

0972-4443

e-ISSN

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Svazek periodika

20

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

IN - Indická republika

Počet stran výsledku

10

Strana od-do

85-94

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-85064618795