Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
A COMPARISON BETWEEN SIMILARITY SOLUTION AND EXPERIMENTAL DATA OF INCOMPRESSIBLE PLANAR MIXING LAYER
Submission Author:
Mateus Alves Ferreira , RJ
Co-Authors:
Mateus Alves Ferreira , Juan Carlos Assis da Silva, César Cunnha Pacheco, Leonardo Santos de Brito Alves
Presenter: Mateus Alves Ferreira
doi://10.26678/ABCM.COBEM2023.COB2023-1008
Abstract
Similarity solutions of the boundary layer equations for a plane mixed layer flowing from left to right are traditionally solved by assuming that the separating streamline emanating from the horizontal divider plate remains horizontal downstream of it. This effectively makes the vertical velocity profile unidirectional, flowing from the slowest to the fastest layer. However, experimental and direct numerical simulation (DNS) data contradict these findings. It turns out that entrainment occurs, where the fluid flows from both layers towards the centerline of the mixing layer. As a consequence, this centerline moves towards the slower flow more and more as the streams flow downstream. The present work tries to correct this problem by modifying the centerline boundary condition used in the similarity solution and then comparing with the experimental data present in the reference bibliographies.
Keywords
Mixing layers;, Blasius Solution;, Shooting method;, experimental data
