Mathematical model of a constructal Coanda effect nozzle

TRANCOSSI, Michele, STEWART, Jill, MAHARSHI, Subhash and ANGELI, Diego (2016). Mathematical model of a constructal Coanda effect nozzle. Journal of Applied Fluid Mechanics, 9 (6), 2813-2822.

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Abstract

This paper analyses the ACHEON Coanda effect nozzle for aircraft propulsion, based on the dynamic equilibrium of two jet streams. The ACHEON concept, and, in particular, the HOMER nozzle, which is its main component, are presented, together with the literature milestones from which the idea originally stems. A subsystem analysis inspired by the principles of Constructal Theory is presented for the current architecture. A mathematical model of a 2D case of the system is developed, focusing on the combined effect of the mixing of the two streams and the Coanda adhesion over a convex surface. A validation of the model is also reported, based on 2D CFD analyses, under the hypothesis of incompressible flow. Results highlight that, in spite of its relative simplicity, the model produces accurate results.

Item Type: Article
Uncontrolled Keywords: Coanda effect; Fluid dynamic adhesion; Dual stream; Mathematical model; Constructal law.
Research Institute, Centre or Group: Materials and Engineering Research Institute > Engineering Research
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Depositing User: Michele Trancossi
Date Deposited: 08 Nov 2016 10:07
Last Modified: 08 Nov 2016 10:14
URI: http://shura.shu.ac.uk/id/eprint/13963

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