Linearised Euler solver
We use a high-order Linearised Euler Equation (LEE) solver to study specific aeroacoustic problems that are not governed by nonlinear and viscous effects. An LEE solver is significantly faster than a Navier-Stokes solver, and it has used to understand how sound propagates in complex environments. In the video, the LEE solver illustrates how sound generated inside an aircraft engine propagates towards the bypass outlet and scatters around the engine walls. High-order numerical schemes and non-reflective boundary conditions are applied to minimise the numerical error and to maximise the computational efficiency.