SIMULATION OF AN AXISYMMETRICAL COANDA PROFILE WITH RADIAL CLEARANCE
Résumé
This paper presents the results of simulating the air flow as jet attached to a Coanda profile. The simulation on a Reynolds Averaged Navier-Stokes (RANS) model based on the concept of turbulent viscosity could give valuable information on the behavior of such a system if the appropriate limit and material conditions are imposed by the designers. The model proposed by the authors could simulate with sufficient accuracy the process of jet attaching on the Coanda profile. The jet is accelerated across the upside of the Coanda airfoil and, as a consequence of Bernoulli’s law, the static pressure drops and for thinner jets and higher velocities, the jet does not detach from the surface of the Coanda airfoil.
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