Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Numerical Study of Rugosity Effects in a Sinusoidal Pipe by Apllying k-Omega SST Turbulence Model
Submission Author:
Paulo Gabriel Cunha Martins , SP
Co-Authors:
Paulo Gabriel Cunha Martins, Kesiany Máxima de Souza, Marcelo De Lemos
Presenter: Paulo Gabriel Cunha Martins
doi://10.26678/ABCM.COBEM2019.COB2019-0963
Abstract
Corrugated walls are widely applied in industry in order to increase the heat transfer between the inner flow and the outer environment. The present study aims to analyze the flow properties inside a corrugated pipe considering different levels of wall roughness. The k-omega SST turbulence model was chosen since it deals with flow detachment near the wall and recirculation bubble with good accuracy at low computer cost. The approach method was validated by comparing the friction factors in a straight pipe with literature results. After a grid independence study, the corrugated pipe simulation allowed important observations such as the drop of the velocity in centerline, increase of the head loss, a slow diminishing of the vortices, and an increase of the shear stress on the throats all caused by an intensification of the wall roughness.
Keywords
Corrugated pipe, Turbulent modeling, Roughness, k-omega SST turbulence model
