Large Eddy Simulation of Turbulent Flows in Compound Channels with a Finite Element Code
NURETH-14 - 2011 September 25-30


Presented at:
NURETH-14
2011 September 25-30
Location:
Toronto, Canada
Session Title:
B1-1 Computational Fluid Dynamics, Mathematical Modeling and Verification/Validation/Applications

Authors:
Carla Xavier (Federal University of Rio Grande do Sul)
Adriane Petry (Federal University of Rio Grande do Sul)
Sergio Möller (Federal University of Rio Grande do Sul)
  

Abstract

This paper presents the numerical investigation of the developing flow in a compound channel formed by a rectangular main channel and a gap in one of the sidewalls. A three dimensional Large Eddy Simulation computational code with the classic Smagorinsky model is introduced, where the transient flow is modeled through the conservation equations of mass and momentum of a quasi- incompressible, isothermal continuous medium. Finite Element Method, Taylor-Galerkin scheme and linear hexahedrical elements are applied. Numerical results of velocity profile show the development of a shear layer in agreement with experimental results obtained with Pitot tube and hot wires.

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