A New Mathematical Model for Coandă Effect Velocity Approximation

Implementation of a correction factor for the Pohlhausen laminar boundary layer applied on the CEVA curved wall jet model

“…The paper is dwelling on the previous work provided in Ref [20] which proposes a semiempirical Coandă effect model and that presented in Ref [Pohl] in which the Pohlhausen boundary layer is applied to the Rodman et al formalism. An initial test is made with the baseline CEVA model which was implemented numerically in Eq.…”

“…Firstly, the RWR model is validated only for very thin wall jets with a height to radius (h/R) ratio lower than 3-4%. An extended (h/R<10%), semi-empirical, model (CEVA) is described in Ref [20]. The second limitation is the Pohlhausen boundary layer equation itself, which has some difficulties in estimating the laminar boundary layer separation, improved models being presented in Refs [21] and [22].…”

Thrust and jet directional control using the Coanda effect

“…This effect allows a fluid jet to flow along a wall, which angles away from its previous flow direction ( Fig. 1) [1,2]. This concept and the corresponding advantages of its use, both in aerospace propulsion system and in…”