CFD analysis of the fluid particles distribution by means of aviation technique

• Autorzy: Seredyn T. , Dziubiński A. , Jaśkowski P.

Warianty tytułu

PL

Analizy CFD rozkładu kropel rozprzestrzenianych za pomocą statku powietrznego

• Języki publikacji: EN

Abstrakty

EN

The article describes a computational study, using CFD models, of droplet spray dispersal in the wake of a ‘Turbo Kruk’ airplane up to 500 m downstream. The CFD Reynolds-averaged Navier-Stokes (RANS) models use a Lagrangian (droplet phase) and Eulerian (fluid phase) procedure to predict the droplet trajectories trough the turbulent aircraft wake. The methods described in the work have the potential to improve current models for aerial spraying and will help in the development of new spraying procedures. In this study, the CFD models are used to describe the phenomenon of sprays released from atomizers mounted on the plane. A parametric study of the aircraft model examines the effects of crosswind on the aircraft’s vortex structures and the resulting droplet trajectories. The study shows, that such influence is underestimated in the current models. A comparison of the present results to AGDISP predictions is provided.

PL

W artykule opisano analizy numeryczne, wykorzystujące współczesne metody CFD, do badania przestrzennego rozkładu kropel cieczy, rozpylonych w polu prędkości samolotu ‘Turbo Kruk’ w odległości do 500 m za statkiem powietrznym. Wykorzystano równania RANS, celem rozwiązania zagadnienia Lagrangea trajektorii kropel (dyskretnych cząstek) w powietrzu (płyn), rozumianym jako sturbulizowany ślad aerodynamiczny samolotu. Wybrana i opisana metoda w pracy posiada ogromny potencjał, możliwy do wykorzystania w celu ulepszenia obecnych, obowiązujących modeli opryskiwania z samolotu i ustalenia lepszych procedur technologicznych. W pracy wykorzystano metody CFD do opisania i analizy zjawiska rozpylania kropel przez atomizery, zamocowane na płatowcu. Podjęto problem wpływu wiatru bocznego na struktury wirowe, generowane lecącym statkiem powietrznym, a przez to na trajektorie kropel i rozkład przestrzenny masy oprysku. Pokazano, że taki wpływ jest niedoszacowany według obecnych, standardowych modeli, przede wszystkim poprzez porównanie do wyników uzyskanych w oparciu o model AGDISP.

Słowa kluczowe

EN

droplets dispersion modeling; pesticide spraying; agricultural aircraft wake

PL

modelowanie oprysków; analizy CFD; ślad aerodynamiczny samolotu

• Wydawca: Wydawnictwa Naukowe Instytutu Lotnictwa
• Czasopismo: Prace Instytutu Lotnictwa
• Rocznik: 2018
• Tom: Nr 1 (250)
• Strony: 66--92
• Opis fizyczny: Bibliogr. 48 poz., rys., tab., wykr., wzory

Twórcy

autor

Seredyn T.

• Polish Air Force Academy, ul. Dywizjonu 303 35, 08-521 Dęblin, Poland

autor

Dziubiński A.

• Centre of New Technologies, Institute of Aviation, al. Krakowska 110/114, 02-256 Warsaw, Poland

autor

Jaśkowski P.

• Design Analysis & Calculation Group, PZL „Warszawa–Okęcie” S. A. Airbus Defence & Space, al. Krakowska 110/114, 02-256 Warsaw, Poland

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).