1. Project Description#

The objective of this project is to reproduce the properties of atmospheric boundary layer (ABL) through CFD-LES simulations. The wind profiles must reproduce the logaritmic equation from [1].

The reference heights used for velocity normalization was measured at $H$ = 150 m. One convective time scale is defined as $CTS=H/U_H$.

To achieve different velocity profiles for each terrain category, fins with height $h$ are distributed across the floor. The fins width was fixed in $6$ m and the spacing $x\times y$ in $16\times 32$ m.

After calibration steps, the required height for each category was:

2. Simulation Setup#

The Synthetic Eddy Method (SEM) boundary condition is applied at the inlet of the computational domain. A Neumann boundary condition is applied at the remaining boundaries.

The reference position is at $1200$ m from the inlet, and 3 grid refinement levels were assessed:

The simulation parameters were:

The equivalent parameters in full scale are:

The computational resources required were:

3. Results: Reference Position#

Average Velocity#

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Turbulence Intensity#

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Integral Lenght Scale#

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Energy Spectra#

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Execution Notes#

Changelog#