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Coanda Synthetic Jet Deflection Apparatus and Control
Technical Paper
2011-01-2590
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents the theoretic and numerical background of a recent patent about an innovative Coanda Effect application. This innovative jet is designed to enhance the controllability of the system and to encompass static deflection of the fluid jet but especially the dynamic variation of the Coanda deflection with a very low inertia. This innovative nozzle is formerly named H.O.M.E.R., acronym of “High-speed Orienting Momentum with Enhanced Reversibility”. H.O.M.E.R. constitutes an application based on a dual propeller system. It explains how a vector controllable flux can be produced, with the ability to change angular position dynamically as a function of momentum (or velocity) of the two primitive streams. CFD based simulation in a configuration is provided and main calculations are produced to define the control model. Nozzle design guidelines are provided. The proposed system can be used both for aeronautical naval propulsion and industrial applications.
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Citation
Trancossi, M. and Dumas, A., "Coanda Synthetic Jet Deflection Apparatus and Control," SAE Technical Paper 2011-01-2590, 2011, https://doi.org/10.4271/2011-01-2590.Also In
References
- Coanda, H. US Patent n. 3,261,162, Lifting Device Coanda Effect 1936 USA
- Coanda, H. US Patent # 2,052,869, Device for Deflecting a Stream of Elastic Fluid Projected into an Elastic Fluid 1936
- Newman, B. G. The Deflexion of Plane Jets by Adjacent Boundaries Coanda Effect, Boundary Layer and Flow Control Lachmann, G. V. 1 Pergamon Press Oxford 1961 232 264
- Bradshaw, P. “Effects of Streamline Curvature on Turbulent Flow,” AGARDograph 1990 AGARDograph AG-169
- Postma, A. K. Smith, J. D. Trent, D. S. Development of a Concept for a High Capacity Pneumatic Conveying System Employing a Fluid Attachment Device for Use in Underground Excavation Final Technical Report US Bureau of Mines 1973
- Juvet, P. J. D. Control of High Reynolds Number Round Jets Ph.D. Thesis Department of Mechanical Engineering, Stanford University 1993
- Allen, D. S. Smith, B. L. “Axisymmetric Coanda-assisted vectoring,” Exp. Fluids December 2007
- Smith, B. L. High-speed jet control United States Patent Application 20070158468
- Smith, B. L. High-speed jet control United States Patent 7757966 2010
- Allen, D. S. Smith, B. L. “Axisymmetric Coanda-assisted vectoring,” Exp. Fluids December 2007
- Allen, D. S. Axisymmetric Coanda-Assisted Vectoring 2008 All Graduate Theses and Dissertations http://digitalcommons.usu.edu/etd/90
- Wing, D. J. “Static Investigation of Two Fluidic Thrust-Vectoring Concepts on a Two- Dimensional Convergent-Divergent Nozzle,” Tech. Rept. NASA TM-4574 Hampton, VA 1994
- Mason, M. S. Crowther, W. J. “Fluidic Thrust Vectoring of Low Observable Aircraft,” CEAS Aerospace Aerodynamic Research Conference June 2002
- Dumas, A. Trancossi, M. Giuliani, I. Madonia, M. “Ugello capace di deviare in modo dinamico e controllabile un getto sintetico senza parti meccaniche in movimento” IT. Patent N. re2011A000065 2011
- Trancossi, M. “An Overview of Scientific and Technical Literature on Coanda Effect Applied to Nozzles,” SAE Technical Paper 2011-01-2591 2011
- Trancossi, M. Dumas, A. “A.C.H.E.O.N.: Aerial Coanda High Efficiency Orienting-jet Nozzle,” SAE Technical Paper 2011-01-2737 2011