Obvladovanje merilnih podatkov za pogoje toka zraka v merilni sekciji vetrovnika

Zupan, Urh (author), Bobovnik, Gregor (mentor), Kutin, Jože (comentor)

Pri umerjanju merilnikov hitrosti je pomembno poznavanje gostote toka zraka, saj je potrebno odčitek merila velikokrat korigirati na dejanske pogoje v toku zraka, ki so zagotovljeni pri umerjanju. V nalogi smo predstavili ustrezen model za določanje gostote vlažnega zraka in merilni sistem za merjenje vseh potrebnih parametrov (temperatura, tlak in relativna vlažnost). Naredili smo tudi analizo merilne zmogljivosti posameznih merilnikov. Izdelali smo nadzorni program, ki omogoča zajem podatkov iz etalonskega merilnika hitrosti in hkratno zapisovanje pogojev toka zraka in izračun njegove gostote.

• Language: Slovenian
• Keywords: vetrovniki, merilna zmogljivost, pogoji toka zraka, nadzorni program za zajem podatkov
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [U. Zupan]
• Year: 2021
• Number of pages: XV, 31, [2] str.
• PID: 20.500.12556/RUL-130031
• UDC: 533.6.07:531.7:53.088(043.2)
• COBISS.SI-ID: 79986179
• Publication date in RUL: 10.09.2021

ZUPAN, Urh, 2021, Obvladovanje merilnih podatkov za pogoje toka zraka v merilni sekciji vetrovnika [online]. Bachelor’s thesis. Ljubljana : U. Zupan. [Accessed 26 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=130031

Secondary language

• Language: English
• Title: Management of measurement data of air flow conditions in a measuring section of the wind tunnel

Abstract

When calibrating air velocity meters, it is crucial to know the air flow density, as the meter reading must often be applied to the actual conditions in air flow, which are ensured during the calibration. In this paper we present an appropriate model for determining the density of moist air and we also present the measuring system for all the necessary parameters (temperature, pressure and relative humidity). We also performed an analysis of the measurement capability of individual meters. We have created a control program that enables the acquisition of data from the LDA measuring system and the simultaneous recording of air flow conditions and the calculation of its density.

• Keywords: wind tunnels, measurement capability, air flow conditions, control program for data acquisition