Comparison of calibrations of wind speed meters with a large blockage effect

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F19%3AN0000172" target="_blank" >RIV/00177016:_____/19:N0000172 - isvavai.cz</a>

Výsledek na webu

<a href="http://flomeko2019.lnec.pt/after_conference.html" target="_blank" >http://flomeko2019.lnec.pt/after_conference.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of calibrations of wind speed meters with a large blockage effect

Popis výsledku v původním jazyce

In this paper we report on the first results of EURAMET project no. 1431 which was initiated in 2017 with a goal to experimentally determine systematic deviations of calibration results of vane and cup anemometers due to various boundary conditions in different wind tunnels especially in wind tunnels with open test section where theoretical models are missing. For that purpose 3 vane anemometers and 2 cup anemometers of various dimensions have been calibrated in 14 wind tunnels with various types and sizes of test sections ranging from 15 cm to 100 cm in diameter. This paper provides the first look to calibration data from the recently completed measurements. On top of that, velocity disturbance fields in front of the 5 tested anemometers have been measured in order to avoid mixing of the effect of boundary conditions with other source of deviations due to placing a reference meter to an area influenced by a meter under test. The velocity disturbance fields reported in this paper can be useful for all air speed calibration laboratories giving an idea how large these deviations can be and what is the optimal position and distance of a reference meter.

Název v anglickém jazyce

Comparison of calibrations of wind speed meters with a large blockage effect

Popis výsledku anglicky

In this paper we report on the first results of EURAMET project no. 1431 which was initiated in 2017 with a goal to experimentally determine systematic deviations of calibration results of vane and cup anemometers due to various boundary conditions in different wind tunnels especially in wind tunnels with open test section where theoretical models are missing. For that purpose 3 vane anemometers and 2 cup anemometers of various dimensions have been calibrated in 14 wind tunnels with various types and sizes of test sections ranging from 15 cm to 100 cm in diameter. This paper provides the first look to calibration data from the recently completed measurements. On top of that, velocity disturbance fields in front of the 5 tested anemometers have been measured in order to avoid mixing of the effect of boundary conditions with other source of deviations due to placing a reference meter to an area influenced by a meter under test. The velocity disturbance fields reported in this paper can be useful for all air speed calibration laboratories giving an idea how large these deviations can be and what is the optimal position and distance of a reference meter.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2019

Kód důvěrnosti údajů

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