Direct numerical simulation of transitional boundary layer with a roughness

• Grant number: 11/19215-1
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: May 01, 2012
• End date: April 30, 2013
• Field of knowledge: Engineering - Mechanical Engineering - Transport Phenomena
• Principal Investigator: Leandro Franco de Souza
• Grantee: Larissa Alves Petri
• Supervisor: Markus J. Kloker
• Host Institution: Instituto de Ciências Matemáticas e de Computação (ICMC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: University of Stuttgart, Germany
• Associated to the scholarship: 10/00880-2 - Direct Numerical SImulation of transitional flow over a roughness, BP.DR

Abstract

The presence of protuberances in several flows on surfaces, for example, rivets, screws and gaskets, can influence the boundary layer by accelerating the transition from laminar flow to turbulent flow. This may be undesirable, since the turbulent flow must involve a frictional force greater than the laminar one. There are some aspects in this type of flow that are not well understood. The aim of this work is to study the influence of an isolated roughness on a boundary layer. It is hoped that this study is a step towards the understanding of what can happen in more complex cases. The nature of this study is computational, where will be used direct numerical simulation (DNS). The immersed boundary layer will be used to represent the roughness in the flow on the flat plate. The results will be performed based on instability theories and turbulence applied to shear layer. (AU)

Scientific publications

(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)

PETRI, LARISSA A.; SARTORI, PATRICIA; ROGENSKI, JOSUEL K.; DE SOUZA, LEANDRO F.. Verification and validation of a Direct Numerical Simulation code. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, v. 291, p. 266-279, JUL 1 2015. (11/08010-0, 11/00647-9, 10/00880-2, 12/25121-2, 11/19215-1)