2D simulation of the oscillating flow in the thermoacoustic engine Swift Backhaus

This work is devoted to the study of a thermoacoustic Swift-Backhaus engine, composed of a porous medium regenerator and a resonator consisting of an annular loop and of a linear portion. This machine has finally attracted the attention of researchers to create industrial applications of renewable energies. This last stage can only be done after an improvement and an optimization of certain components of the machine, in order to reduce the losses of heat by convection, due to nonlinear phenomena. The simulation is based on solving the coupled Navier-Stokes and heat equations for a compressible fluid. The COMSOL Multiphysics software provides the numerical tools to solve the strong coupling of transient transitional fluid flow and heat transfer using the iLES (implicit Large Eddy Simulation) method.