Analiza potencialnega toka okoli letala s panelno metodo

Bajuk, Jože (author), Šajn, Viktor (mentor)

Panelna metoda omogoča analizo potencialnega toka okoli poljubne kompleksne geometrijske oblike. V nalogi smo predstavili njeno teoretično ozadje in njeno natančnost preverili na primeru končnega krila letala eliptične oblike. Rezultate smo primerjali z analitičnimi rešitvami in prišli do zaključka, da je ob pravilni izbiri vrtinčne sledi in natančne mreže ujemanje, za inženirske potrebe, zadovoljivo. Podrobno smo preučili tudi vpliv izbrane oblike vrtinčne sledi, kjer smo ugotovili, da je za praktične potrebe najbolj učinkovita izbira sledi, ki zapušča zadnji rob krila simetrično glede na zadnji kot in dolžino, nekajkrat daljšo od samega razpona krila.

• Language: Slovenian
• Keywords: panelna metoda, potencialni tok, Neumannov robni pogoj, Dirichletov robni pogoj, Kutta pogoj, vrtinčne sledi, eliptično krila
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [J. Bajuk]
• Year: 2019
• Number of pages: XIII, 41 f.
• PID: 20.500.12556/RUL-108649
• UDC: 532.6:629.7(043.2)
• COBISS.SI-ID: 16712219
• Publication date in RUL: 11.07.2019

Secondary language

• Language: English
• Title: Analysis of potential flow around aircraft using panel method

Abstract

The panel method is used for the analysis of the potential flow around any an arbitrary complex geometry. In the thesis work we presented the theory behind panel method and verified its accuracy on an elliptical wing of an aircraft. We compared the results with analytical solutions and concluded that with the correct choice of wake modeling and surface meshing, results are accurate enough for practical engineering matters where fluid flow can be approximated as potential flow. We studied the influence of different wake geometry and concluded that for practical purposes the most effective design is when the wake leaves the trailing edge symmetrically and that its length is at least several times longer as is the wingspan.

• Keywords: panel method, potential flow, Neumann boundary condition, Dirichlet boundary condition, Kutta conditon, elliptical wings