Naslov
CFD Modelling of the Coanda Based Thrust Vectoring Nozzle

Autori
Suñol, A. ; Vucinic, D. ; Vanlanduit, S.

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID DYNAMICS

Urednik/ci
Shaari, KZK ; Awang, M

Izdavač
Springer

Grad
New York (NY)

Godina
2014

Raspon stranica
73-84

ISBN
978-3-319-02836-1

ISSN
1869-8433

Ključne riječi
Coanda-effect based nozzle

Sažetak
The paper presents the CFD study of a Coanda- effect based nozzle, developed within the European FP7 project ACHEON. The ACHEON nozzle is able to provide a directional thrust without any movement of mechanical parts, by utilizing the Coanda effect to divert a jet from the symmetry axis. The deviation of the jet produces an oriented thrust vector due to the existence of a perpendicular component to the main propulsive direction. The studied nozzle is envisaged to be applied to UAVs. The directional thrust control-its deviation from the symmetry axis-is achieved by the relative mass flow variations between the two inlet jets. The geometry of the nozzle forces the resulting jet to follow the desired trajectory, thus by controlling in this way the thrust direction exerted by the nozzle. The influence of the selected parameters on the control of the thrust direction has been studied using CFD. In particular, the dependency of the thrust change in respect to the inlet conditions is analysed for different scenarios, with special focus on the thrust magnitude and its direction. The following parameters affecting the flow field of the nozzle have been studied: (a) the ratio of inlet velocities, (b) the Reynolds number at the throat and (c) the geometrical ratio throat/cylinder. Significant dependences between the identified parameters have been observed.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo

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