Effect of the insertion depth on calibration results of vane anemometers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F23%3AN0000055" target="_blank" >RIV/00177016:_____/23:N0000055 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0263224123011946" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0263224123011946</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.measurement.2023.113630" target="_blank" >10.1016/j.measurement.2023.113630</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of the insertion depth on calibration results of vane anemometers

Popis výsledku v původním jazyce

In this paper we show that velocity indication of vane anemometers with a propeller placed at the end of a mounting rod installed perpendicularly to air flow can vary by several percent (up to 9% in our tests) if the length of the mounting rod exposed to flow (insertion depth) is changed. Four vane anemometers of different dimensions were tested for velocities (2-20) m/s and for the insertion depths (7.5-37.5) cm. Interlaboratory comparison was conducted showing how the effect influences the calibration results in five different wind tunnels with test section diameters/widths from 25.5 cm to 100 cm. Important conclusions were drawn for air speed calibration laboratories whose uncertainties are usually an order of magnitude smaller than the variations of the measurement error observed for some of the anemometers. Also, it was shown that the effect can be nearly eliminated by changing the cross-sectional profile of the mounting rod from circle to an airfoil.

Název v anglickém jazyce

Effect of the insertion depth on calibration results of vane anemometers

Popis výsledku anglicky

In this paper we show that velocity indication of vane anemometers with a propeller placed at the end of a mounting rod installed perpendicularly to air flow can vary by several percent (up to 9% in our tests) if the length of the mounting rod exposed to flow (insertion depth) is changed. Four vane anemometers of different dimensions were tested for velocities (2-20) m/s and for the insertion depths (7.5-37.5) cm. Interlaboratory comparison was conducted showing how the effect influences the calibration results in five different wind tunnels with test section diameters/widths from 25.5 cm to 100 cm. Important conclusions were drawn for air speed calibration laboratories whose uncertainties are usually an order of magnitude smaller than the variations of the measurement error observed for some of the anemometers. Also, it was shown that the effect can be nearly eliminated by changing the cross-sectional profile of the mounting rod from circle to an airfoil.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Measurement

ISSN

0263-2241

e-ISSN

1873-412X

Svazek periodika

222

Číslo periodika v rámci svazku

113630

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

113630

Kód UT WoS článku

001100018800001

EID výsledku v databázi Scopus

2-s2.0-85173221752