Embedded LES

This repository contains the code used for an Embedded LES framework based on OpenFOAM.

Method

Embedded LES refers to the automatic switching to scale resolving simulation. The current method implemnts a nested procedure where the whole domain is covered by a RANS mesh and within this there is an area/areas of LES. This is done by coupling a standard openFOAM RANS solver with a standard OpenFOAM LES solver. The interfacing between the two solvers is handled by preCICE, an open-source coupling library for partitioned multi-physics simulations and uses a modified version of the standard openFoam adapter.

• mySEM is a boundary condition for the velocity in the LES region that reads in the velocity from the RANS mesh and applies the Synthetic Eddy Method to generate the turbulent structures. more info

• myOutletInlet is a boundary condition for the pressure in the LES region that reads pressure and pressure gradient from the RANS mesh and applies one depending on the flow direction.

• myCorrection is a source term is called by fvOptions in order to apply a drift force to correct the RANS towards the LES in a specified region.

Compilation

This code has been tested in OpenFOAMv1806. To install:

cd mySEM;
wmake;
cd ../myOutletInlet;
wmake;
cd ../myCorrection;
wmake;
cd ../