MESH LESS MODELING OF A PRESSURE WAVE SUPERCHARGER

Abstract

This paper is a simulation analysis using a mesh less modeling with Lattice Boltzmann method of the evolution of the pressures along the wave rotor channels for the exhaust gases and for the fresh air. The simulation of the process at the contact surface of the two fluids is provided in order to show the interaction of the high energy fluid with the low energy fluid. The simulation was modeled to match data, such as pressures, mass flows, usually measured in real engine on pressure wave supercharging. Results were obtained at different range of operating conditions aiming a high boost pressure into the intake, or the exhaust manifold. The LBM assures native unsteady 3D simulation only for the fluid domain. The velocity, pressure and temperature fields are presented including 3D effects with good agreement response with measurements.