The Development of Multi-element Temperature Sensors for a Compressible Fluid Flow Velocity Measurement

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00353173" target="_blank" >RIV/68407700:21220/21:00353173 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The Development of Multi-element Temperature Sensors for a Compressible Fluid Flow Velocity Measurement

Original language description

When measuring the temperature of a stream of compressible fluid using a temperature sensor, experimenters must address the problem of the effect of the compressibility of the locally decelerated fluid in the near neighborhood of the sensor on the rendered temperature. Generally said, the temperature rendered by a temperature probe positioned within an airflow depends on the external flow velocity, the specific heat of the fluid, the thermodynamic temperature, and the recovery factor of the probe. A method of measuring the velocity of a flowing compressible fluid that takes advantage of these properties is called Recovery Temperature Anemometry (RTA). This, unfortunately, means there are two unknown properties in real-time measurements – the velocity and the thermodynamic temperature of the fluid. This article is focused on a possible solution to the mentioned problem and the development of appropriate probes. By using two probes with different recovery factors, the need for knowing the thermodynamic temperature is eliminated so that a combination of two temperature probes with different recovery factors can be used for the velocity measurement. As described in this paper, by using multiple temperature sensors with different recovery factors, the temperature of the flowing fluid can be eliminated, leaving only one unknown quantity in the entire problem, which is the velocity of the flowing fluid. The article describes the theoretical basis of the problem, the purpose of multi-element probe, the verification multi-element temperature probe behavior, the measurement technique, and the results.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20303 - Thermodynamics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Article name in the collection

Proceedings of Abstracts 39th Meeting of Departments of Fluid Mechanics and Thermodynamic

ISBN

978-80-248-4557-9

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

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Publisher name

VŠB - Technical University of Ostrava

Place of publication

Ostrava

Event location

Hotel Duo, Horní Bečva

Event date

Oct 13, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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