Eventos Anais de eventos
EPTT 2024
14th Spring School on Transition and Turbulence
A new CFD code for simulation of the neutral atmospheric boundary layer using the RANS methodology
Submission Author:
Anna Caroline Felix Santos de Jesus , ES
Co-Authors:
Anna Caroline Felix Santos de Jesus, Livia S. Freire, Nelson Dias, Willian Lesinhovski
Presenter: Anna Caroline Felix Santos de Jesus
doi://10.26678/ABCM.EPTT2024.EPT24-0016
Abstract
Many simulations involving the atmospheric boundary layer (ABL) are often solved using the Reynolds-averaged Navier-Stokes (RaNS) methodology. It is common to find simulations in the literature that use commercial codes, which need careful modifications and simplifications to accurately address the physics of the specific problem. Developing specific code for the neutral atmospheric boundary layer can provide advantages in terms of accuracy. In this study, we present results obtained using a code specifically developed to model the atmosphere. The code implements the popular two-equation k-e turbulence model for the closure of Reynolds-averaged Navier-Stokes equations. The validity of the code is demonstrated by replicating the expected behavior of two problem variables (u and k), compared with the Direct Numerical Simulation (DNS) solution of the classic periodic turbulent half-channel problem.
Keywords
atmospheric boundary layer (ABL), Reynolds-averaged Navier-Stokes (RaNS), k-e turbulence model, neutral, Direct numerical simulation (DNS)
