Primary stability of incompressible laminar separation bubbles obtained by direct numerical simulation

• Grant number: 16/25590-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2017
• End date: February 28, 2018
• Field of knowledge: Engineering - Aerospace Engineering - Aerodynamics
• Principal Investigator: Elmer Mateus Gennaro
• Grantee: Marcelo Pereira Nogueira
• Host Institution: Universidade Estadual Paulista (UNESP). Campus Experimental São João da Boa Vista. São João da Boa Vista , SP, Brazil

Abstract

The present project is based on the ideas of U. Dallman, at the end of the 1980's, that a global instability mechanism may exist on a two-dimensional recirculation flow, which under an infinitesimal perturbation gives rise to a totally three-dimensional flow. In previous works Rodríguez, Gennaro and Juniper (2013) show that in an incompressible flow, as bubbles of separation of a mechanism of intrinsic instability, which results does not arise from a three-dimensional structure. The main objective of this project is to study a primary stability of incompressible laminar separation bubbles generated by direct numerical simulations. The proposal of this work will be supported by computational techniques and tools already developed. (AU)