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EPTT 2024
14th Spring School on Transition and Turbulence
Simulation of the Unstable Atmospheric Boundary Layer of Amazon Rainforest Using Large-Eddy Simulation
Submission Author:
Mateus Popoff , SP , Brazil
Co-Authors:
Mateus Popoff, Livia S. Freire
Presenter: Mateus Popoff
doi://10.26678/ABCM.EPTT2024.EPT24-0048
Abstract
Understanding the phenomena that occur in the atmospheric boundary layer (ABL) of the Amazon forest is important to deepen knowledge about their local and global impacts. Turbulence is the main mechanism for mixing the chemical components produced within the canopy and transporting these substances from the forest surface to the top of the ABL. The Large-Eddy Simulation (LES) is a necessary tool to model the ABL, but it is not capable of computationally enabling a high-resolution simulation close to a surface along an extensive vertical domain. The solution proposed in this article for this problem is the use of the One-Dimensional Turbulence (ODT) wall model. When coupled to the LES, the ODT replaces the need for mesh refinement close to the ground, generating stochastic vortices that aim to replicate the turbulence statistics in this area. In the future, the coupled LES-ODT model is expected to become a useful tool to investigate ABL in different vegetation.
Keywords
Turbulence, Large Eddy Simulation, atmospheric boundary layer, Amazon Rainforest
