Instability of separated flows in aeronautical applications

• Grant number: 17/01586-0
• Support Opportunities: Regular Research Grants
• Start date: September 01, 2017
• End date: August 31, 2019
• Field of knowledge: Engineering - Aerospace Engineering - Aerodynamics
• Principal Investigator: Elmer Mateus Gennaro
• Grantee: Elmer Mateus Gennaro
• Host Institution: Universidade Estadual Paulista (UNESP). Campus Experimental São João da Boa Vista. São João da Boa Vista , SP, Brazil
• Associated researchers: Daniel Rodríguez Álvarez

Abstract

The separation laminar flow and the formation of separation bubbles is a problem of great technological importance due to their strong relationship with the aerodynamic properties of the airfoils which operate at high angles of attack. This project aims to study the three-dimensional primary instability in laminar separation bubbles in flat plates, flow in cavities and airfoils and the consequences of it with respect to the secondary instabilities. With the cited stduies, we will be used the advanced tools for local analysis and global instability of these complex flows. The results will provide insight concerning of theoretical and reduced models for the prediction of the effects associated with the generated structures and the development of strategies to control the flow. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

RODRIGUEZ, DANIEL; JOTKAR, MAMTA R.; GENNARO, ELMER M.. Wavepacket models for subsonic twin jets using 3D parabolized stability equations. COMPTES RENDUS MECANIQUE, v. 346, n. 10, p. 890-902, OCT 2018. (14/24782-0, 17/01586-0)

GENNARO, E. M.; SOUZA, B. D. P.; RODRIGUEZ, D.. The effect of compressibility on the primary global instability of unforced laminar separation bubbles. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 41, n. 12, DEC 2019. (15/26759-9, 17/01586-0)

RODRIGUEZ, DANIEL; GENNARO, ELMER M.; SOUZA, LEANDRO F.. Self-excited primary and secondary instability of laminar separation bubbles. JOURNAL OF FLUID MECHANICS, v. 906, NOV 13 2020. (17/01586-0, 14/24782-0)

RODRIGUEZ, D.; GENNARO, E. M.. Enhancement of disturbance wave amplification due to the intrinsic three-dimensionalisation of laminar separation bubbles. AERONAUTICAL JOURNAL, v. 123, n. 1268, p. 1492-1507, OCT 2019. (14/24782-0, 17/01586-0)