Overview of uncertainty sources in flow velocity vector measurement by LDA
Samo za registrovane korisnike
2012
Autori
Ristić, SlavicaIlić, Jelena
Ristić, Ognjen
Čantrak, Đorđe
Tašin, Slobodan
Ostala autorstva
Rajić, ZoranIsaković, Jovan
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Many sources of uncertainties are inherent in LDA practices and must be recognized to obtain good experimental results. Analysis of uncertainty, for tests that include LDA measurements of velocity vectors in wind tunnels or in cylindrical pipe swirl flows is very complex problem. An overview of the most significant uncertainty sources in the LDA measurements is presented. One of the main groups of uncertainty sources is determined by the optical components arrangement. In this paper, special attention is paid to estimation of laser-Doppler anemometry uncertainty of measurement volume positioning in test devices caused by the wind and water tunnel windows thickness, or by the pipe wall curvature (without using refractive index matching). The required corrections, for measurements of velocity components such: shift of measuring volume and its orientation are analyzed and determined for VTI wind and water tunnels and for some very often used geometry of cylindrical pipes in industry. Depe...nding on different experimental conditions, some of these sources of uncertainty may be neglected, but generally, it is necessary to take
into account all of them in all optical methods, as LDA, PDA, PIV and so on.
Ključne reči:
LDA / measurement uncertainty / wind and water tunnel / cylindrical pipeIzvor:
Proceedings 5th International Scientific Conference OTEH 2012, 2012, 43-48Izdavač:
- Beograd : Vojnotehnički institut
Finansiranje / projekti:
- Primena savremenih mernih i proračunskih tehnika za izučavanje strujnih parametara ventilacionih sistema na modelu energetski izuzetno efikasnog (pasivnog) objekta (RS-MESTD-Technological Development (TD or TR)-35046)
Kolekcije
Institucija/grupa
Mašinski fakultetTY - CONF AU - Ristić, Slavica AU - Ilić, Jelena AU - Ristić, Ognjen AU - Čantrak, Đorđe AU - Tašin, Slobodan PY - 2012 UR - https://machinery.mas.bg.ac.rs/handle/123456789/4642 AB - Many sources of uncertainties are inherent in LDA practices and must be recognized to obtain good experimental results. Analysis of uncertainty, for tests that include LDA measurements of velocity vectors in wind tunnels or in cylindrical pipe swirl flows is very complex problem. An overview of the most significant uncertainty sources in the LDA measurements is presented. One of the main groups of uncertainty sources is determined by the optical components arrangement. In this paper, special attention is paid to estimation of laser-Doppler anemometry uncertainty of measurement volume positioning in test devices caused by the wind and water tunnel windows thickness, or by the pipe wall curvature (without using refractive index matching). The required corrections, for measurements of velocity components such: shift of measuring volume and its orientation are analyzed and determined for VTI wind and water tunnels and for some very often used geometry of cylindrical pipes in industry. Depending on different experimental conditions, some of these sources of uncertainty may be neglected, but generally, it is necessary to take into account all of them in all optical methods, as LDA, PDA, PIV and so on. PB - Beograd : Vojnotehnički institut C3 - Proceedings 5th International Scientific Conference OTEH 2012 T1 - Overview of uncertainty sources in flow velocity vector measurement by LDA EP - 48 SP - 43 UR - https://hdl.handle.net/21.15107/rcub_machinery_4642 ER -
@conference{ author = "Ristić, Slavica and Ilić, Jelena and Ristić, Ognjen and Čantrak, Đorđe and Tašin, Slobodan", year = "2012", abstract = "Many sources of uncertainties are inherent in LDA practices and must be recognized to obtain good experimental results. Analysis of uncertainty, for tests that include LDA measurements of velocity vectors in wind tunnels or in cylindrical pipe swirl flows is very complex problem. An overview of the most significant uncertainty sources in the LDA measurements is presented. One of the main groups of uncertainty sources is determined by the optical components arrangement. In this paper, special attention is paid to estimation of laser-Doppler anemometry uncertainty of measurement volume positioning in test devices caused by the wind and water tunnel windows thickness, or by the pipe wall curvature (without using refractive index matching). The required corrections, for measurements of velocity components such: shift of measuring volume and its orientation are analyzed and determined for VTI wind and water tunnels and for some very often used geometry of cylindrical pipes in industry. Depending on different experimental conditions, some of these sources of uncertainty may be neglected, but generally, it is necessary to take into account all of them in all optical methods, as LDA, PDA, PIV and so on.", publisher = "Beograd : Vojnotehnički institut", journal = "Proceedings 5th International Scientific Conference OTEH 2012", title = "Overview of uncertainty sources in flow velocity vector measurement by LDA", pages = "48-43", url = "https://hdl.handle.net/21.15107/rcub_machinery_4642" }
Ristić, S., Ilić, J., Ristić, O., Čantrak, Đ.,& Tašin, S.. (2012). Overview of uncertainty sources in flow velocity vector measurement by LDA. in Proceedings 5th International Scientific Conference OTEH 2012 Beograd : Vojnotehnički institut., 43-48. https://hdl.handle.net/21.15107/rcub_machinery_4642
Ristić S, Ilić J, Ristić O, Čantrak Đ, Tašin S. Overview of uncertainty sources in flow velocity vector measurement by LDA. in Proceedings 5th International Scientific Conference OTEH 2012. 2012;:43-48. https://hdl.handle.net/21.15107/rcub_machinery_4642 .
Ristić, Slavica, Ilić, Jelena, Ristić, Ognjen, Čantrak, Đorđe, Tašin, Slobodan, "Overview of uncertainty sources in flow velocity vector measurement by LDA" in Proceedings 5th International Scientific Conference OTEH 2012 (2012):43-48, https://hdl.handle.net/21.15107/rcub_machinery_4642 .