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2021, vol. 49, br. 3, str. 704-710
Aerodinamika talasaste lopatice pod uticajem fluktuirajućeg protoka vetra
aUniversity of Baghdad, College of Engineering, Department of Aeronautical Engineering, Aljadriya, Baghdad, Iraq
bWasit University, College of Engineering, Department of Mechanical Engineering, Kut, Wasit, Iraq

e-adresab.rasheed@coeng.uobaghdad.edu.iq
Ključne reči: wavy blade; CFD; NACA0015 aerofoil; steady flow; angle of attack and fluctuated flow
Sažetak
Nestacionarno strujanje vetra je predstavljalo osnovu za numeričko istraživanje uticaja talasaste ivice lopatice na aerodinamičke karakteristike kretanja lopatica pri Rejnoldsovom broju 8 x 105. Aerodinamičke karakteristike talasaste NACA 0015 aeroprofilne lopatice su ispitane pomoću ICEM 19.1 i ANSYS fluenta. Posle numeričke simulacije izvršena je validacija eksperimentalnim podacima o stacionarnom strujanju vetra. Korišćeni su slični granični uslovi pri Rejnoldsovom broju različitih napadnih uglova, dok je za nestacionarno strujanje u uslovima protoka vetra korišćena frekvencija od 1 Hz. Rezultati pokazuju da se talasasta lopatica ponaša bolje u turbulentnim uslovima vetra sa koeficijentom sile uzgona od 0,73 u poređenju sa 0,621 kod normalne lopatice. Ali, talasasta lopatica se zaustavila pre normalne lopatice kod nestacionarnog protoka. Slično tome, zaustavila se pri uglu od 12°, tj. ranije od normalne lopatice koja se zaustavila pri uglu od 14° u uslovima stacionarnog protoka.
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O članku

jezik rada: engleski
vrsta rada: neklasifikovan
DOI: 10.5937/fme2103704A
primljen: 15.12.2020.
prihvaćen: 15.04.2021.
objavljen u SCIndeksu: 30.07.2021.
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