Influence of disturbing part on measurement of the standard for cryogenic flow rate measurement using LDV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F19%3AN0000139" target="_blank" >RIV/00177016:_____/19:N0000139 - 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

—

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of disturbing part on measurement of the standard for cryogenic flow rate measurement using LDV

Popis výsledku v původním jazyce

Disturbing parts situated on upstream of the flowmeter have influence on inlet velocity field. This change on the inlet of the flowmeter may influence measurement accuracy of the flowmeter. The aim of this article is to determine influence of disturbing parts on the measurement. Typical disturbing part situated on upstream of the flowmeter is elbow, swirl, half-plate, valve etc. The influences will be determined the standard for cryogenic flow rate measurement using LDV which was developed for measurement of the flow rate of liquefied natural gas (LNG) and other cryogenic fluids. The measuring system is simplistically special type of Venturi tube. Principle of this system is measurement of velocity profile using laser doppler velocimeter (LDV) behind the nozzle where the velocity profile is flat. After that the flow rate is calculated from measured velocity profile and diameter of nozzle throat. The influence of disturbing part on accuracy of the measurement will be determined by using numerical simulation. The determination of rate of the influence will be carried out by comparison of numerical simulation with and without the disturbing part. The simulation will be carried out for several disturbing parts.

Název v anglickém jazyce

Influence of disturbing part on measurement of the standard for cryogenic flow rate measurement using LDV

Popis výsledku anglicky

Disturbing parts situated on upstream of the flowmeter have influence on inlet velocity field. This change on the inlet of the flowmeter may influence measurement accuracy of the flowmeter. The aim of this article is to determine influence of disturbing parts on the measurement. Typical disturbing part situated on upstream of the flowmeter is elbow, swirl, half-plate, valve etc. The influences will be determined the standard for cryogenic flow rate measurement using LDV which was developed for measurement of the flow rate of liquefied natural gas (LNG) and other cryogenic fluids. The measuring system is simplistically special type of Venturi tube. Principle of this system is measurement of velocity profile using laser doppler velocimeter (LDV) behind the nozzle where the velocity profile is flat. After that the flow rate is calculated from measured velocity profile and diameter of nozzle throat. The influence of disturbing part on accuracy of the measurement will be determined by using numerical simulation. The determination of rate of the influence will be carried out by comparison of numerical simulation with and without the disturbing part. The simulation will be carried out for several disturbing parts.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/8B17003" target="_blank" >8B17003: Metrological support for LNG and LBG as a transport fuel</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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