Temporal large eddy simulation of turbulent flows via finite volume method

Author(s)

Laís Corrêa

• Document type: Doctoral Thesis
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Instituto de Ciências Matemáticas e de Computação (ICMC/SB)
• Defense date: 2015-12-14

Examining board members

Fabrício Simeoni de Sousa; Gilmar Mompean Munhoz da Cruz; Fernando Akira Kurokawa; Luís Manuel de Mexia Heitor de Medeiros Portela; Harry Edmar Schulz

• Advisor: Fabrício Simeoni de Sousa

Abstract

The main objective of this work is to develop a numerical method for large eddy simulation of tridimensional turbulent flows using a model based on temporal filtering (TLES - Temporal Large Eddy Simulation). The developed method combines at least 2nd order temporal discretizations (Adams-Bashforth, QUICK, Runge-Kutta), a 2nd order projection method, and 2nd order spatial discretizations obtained by the finite volume method. This methodology was employed to the simulation of turbulent benchmark problems such as channel and lid-driven cavity flows. The latter is simulated for the first time using a TLES turbulence modelling. Results show excellent agreement when compared to Direct Numerical Simulations (DNS) and experimental data, with better results than classical results produced by standard LES formulation with spatial filtering. (AU)

• FAPESP's process: 10/16865-2 - Large eddy simulation of the turbulent incompressible flows involving moving free surfaces
• Grantee: Laís Corrêa
• Support Opportunities: Scholarships in Brazil - Doctorate