Theory for electrodiffusional wall shear stress measurement by directionally sensitive twin semicircular probe

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F24%3A00598625" target="_blank" >RIV/67985858:_____/24:00598625 - isvavai.cz</a>

Alternative codes found

RIV/44555601:13440/24:43898614

Result on the web

<a href="https://hdl.handle.net/11104/0356243" target="_blank" >https://hdl.handle.net/11104/0356243</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijheatmasstransfer.2024.126191" target="_blank" >10.1016/j.ijheatmasstransfer.2024.126191</a>

Result language

angličtina

Original language name

Theory for electrodiffusional wall shear stress measurement by directionally sensitive twin semicircular probe

Original language description

This study investigates the theoretical aspects of mass transport at the surface of a twin semicircular electrodiffusion probe tailored to measure the magnitude and direction of near-wall fluid flows. A critical aspect of this research is the development of a theoretical framework that facilitates experimental measurements by analytically relating measured electric currents to the wall shear stress vector. Central to the study is the derivation of analytical expressions for the mass transfer coefficients of the front and rear segments of the probe, which are essential for quantifying near-wall hydrodynamics. Validation of these analytical relations is achieved through numerical solutions of the convection–diffusion equation, providing a robust confirmation of the underlying theory. A comprehensive procedure for experimental data processing is proposed, taking into account both frontal and reverse flow conditions across the probe. In addition, a sensitivity analysis of the twin semicircular probe is performed. This analysis focuses on the response of current ratios to changes in the flow direction, an aspect critical to understanding the operational performance of the probe. The results of this analysis are compared to the characteristics of two-segment strip probes, highlighting the distinct sensitivity nuances of the twin semicircular probe. Our findings provide insight into the optimal application of this probe in various fluid dynamics scenarios.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20402 - Chemical process engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

International Journal of Heat and Mass Transfer

ISSN

0017-9310

e-ISSN

1879-2189

Volume of the periodical

235

Issue of the periodical within the volume

15 December

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

126191

UT code for WoS article

001316753600001

EID of the result in the Scopus database

2-s2.0-85203634955