COMPARATIVE ANALYSIS BETWEEN TURBULENCE MODELS FOR THE RECTANGULAR 2:1 CROSS SECTION

Resumo

Flow around rectangular structures is a classic topic in computer simulation due to its incidence and
characteristic similar to structures in engineering such as tall buildings, bridge decks, water treatment plants,
etc. Therefore, this work discusses the results of two-dimensional computational fluid dynamics simulations of
turbulent flow, performed for a rectangular cylinder with Re=105

. The Navier-Stokes equations were solved with
Reynolds mean turbulence models, specifically, k-ω SST, k-ω SST LM, k-ε. The simulations performed are
used as a parameter for a comparative analysis of the performance of these turbulence models. The objective of
the research is to carry out a discussion about the presented turbulence models, making a correlation with the
coefficients of drag, lift, Strouhal number and the pressure coefficient around the studied section. The analysis
showed that for the case studies considered, the k ω SST and k ω SST LM models were able to provide results
closer to the literature when compared to the others. All developments were performed with non-commercial
OpenFoam code.