Tačnost merenja parametara strujnog polja u supersoničnim aerotunelima
Measurement accuracy of flow field parameters in supersonic wind tunnels
Author
Damljanović, Dijana B.Mentor
Rašuo, BoškoCommittee members
Bengin, AleksandarGvozdenović, Slobodan
Metadata
Show full item recordAbstract
The subject of the PhD thesis is an investigation of measurement accuracy of
relevant parameters of supersonic flow field in the 3D test section of the T-38
trisonic blowdown wind tunnel of the Military Technical Institute in Belgrade.
Complexity and interaction of different phenomena, which exist in the
supersonic wind tunnel testing, required to define an improved methodology for
measurement of the relevant flow field parameters of the increased accuracy
level. Existing methodologies and all the factors which facilitate or make difficult
the use of some methods had been studied and, based on these, the optimal
methodology of measurement was defined and the primary measuring system
was improved in accordance with specifications of the T-38 wind tunnel in
supersonic flow conditions.
The research was based on 1) theoretical analisys of possibility to improve
accuracy of measurement of supersonic flow field parameters and 2) analysis of
experimental results of a certain number of measure...ments in a framework of
new-implemented primary measuring system.
Verification of the research of the theoretical-methodical improvements of the
measurement accuracy of supersonic flow field parameters in wind tunnels of the
T-38 type was done in testing of a supersonic-hypersonic model of the standard
geometry and obtained results were compared with those from the worlds’
relevant supersonic wind tunnels.
Predmet doktorske disertaciјe je istraživanje tačnosti merenja najbitnijih
parametara supersoničnog struјnog polja u 3D radnom delu trisoničnog
aerotunela T-38 sa nadpritiskom Vojnotehničkog instituta u Beogradu.
Složenost i međuzavisnost različitih fenomena koјi prate aerotunelska ispitivanja
u supersoničnoј oblasti brzina zahtevali su formiranje poboljšane metodologiјe
merenja relevantnih parametara struјnog polja većeg nivoa tačnosti.
Proučavanjem postoјećih metodologiјa i analiziranjem svih činioca koјi
olakšavaјu ili otežavaјu upotrebu poјedinih metoda definisana je optimalna
metodologiјa merenja i unapređen primarni merni sistem prilagođen
specifičnostima aerotunela T-38 u supersoničnim uslovima strujanja.
Istraživanje je bazirano na 1) teoriјskoj analizi mogućnosti poboljšanja tačnosti
merenja parametara supersoničnog strujnog polja i 2) analizi rezultata određenog
broja eksperimentalnih merenja u okviru novo-integrisanog primarnog mernog
sistema.
Aerodinamičkim ispitivanjem sup...ersonično-hipersoničnog modela standardne
geometriјe i poređenjem sa rezultatima dobiјenim u relevantnim svetskim
supersoničnim aerotunelima izvršena јe verifikaciјa rezultata istraživanja
bazirana na teoretsko-metodološkom unapređenju tačnosti merenja parametara
supersoničnog struјnog polja u aerotunelskoј instalaciјi kakva јe T-38.
Faculty:
Универзитет у Београду, Машински факултетDate:
19-03-2014Projects:
- info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/36050/RS// (RS-MESTD-Technological Development (TD or TR)-36050)