EURAMET project F1431 - Experimental study of blockage effect in wind tunnels for calibrations of anemometers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F22%3AN0000117" target="_blank" >RIV/00177016:_____/22:N0000117 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.euramet.org/technical-committees/tc-projects/details/project/experimental-study-of-blockage-effect-in-wind-tunnels-for-calibrations-of-anemometers" target="_blank" >https://www.euramet.org/technical-committees/tc-projects/details/project/experimental-study-of-blockage-effect-in-wind-tunnels-for-calibrations-of-anemometers</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

EURAMET project F1431 - Experimental study of blockage effect in wind tunnels for calibrations of anemometers

Popis výsledku v původním jazyce

EURAMET pilot study no. F1431 – Final report The aim of this project was to experimentally determine the blockage effect corrections for vane and cup anemometers especially in case of wind tunnels with an open test section. Such wind tunnels are widely used by calibration laboratories but the known correction models mostly apply to wind tunnels with a closed test section. Mathematical modelling of processes at a boundary of air stream in open test sections is challenging. Three vane anemometers and two cup anemometers of various sizes have been calibrated by 12 laboratories providing 14 wind tunnels with test sections of various types and sizes and the deviations of the results have been analysed. On top of that a small size thermal anemometer and a small size vane anemometer were calibrated in some of the participating wind tunnels in order to compensate differences which are not caused by the blockage effect. To separate the effect of boundary conditions from the effect of placing the reference meter to an area influenced by the meter under test the velocity fields in front of the 5 large size anemometers have been measured in a wind tunnel of the pilot laboratory (CMI).

Název v anglickém jazyce

EURAMET project F1431 - Experimental study of blockage effect in wind tunnels for calibrations of anemometers

Popis výsledku anglicky

EURAMET pilot study no. F1431 – Final report The aim of this project was to experimentally determine the blockage effect corrections for vane and cup anemometers especially in case of wind tunnels with an open test section. Such wind tunnels are widely used by calibration laboratories but the known correction models mostly apply to wind tunnels with a closed test section. Mathematical modelling of processes at a boundary of air stream in open test sections is challenging. Three vane anemometers and two cup anemometers of various sizes have been calibrated by 12 laboratories providing 14 wind tunnels with test sections of various types and sizes and the deviations of the results have been analysed. On top of that a small size thermal anemometer and a small size vane anemometer were calibrated in some of the participating wind tunnels in order to compensate differences which are not caused by the blockage effect. To separate the effect of boundary conditions from the effect of placing the reference meter to an area influenced by the meter under test the velocity fields in front of the 5 large size anemometers have been measured in a wind tunnel of the pilot laboratory (CMI).

Druh

V_souhrn - Souhrnná výzkumná zpráva

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Počet stran výsledku

68

Místo vydání

Česká republika

Název nakladatele resp. objednatele

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Verze

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