Computational Aeroacoustics for HVAC Systems Utilizing a Hybrid Approach

Manfred Kaltenbacher; Andreas Hüppe; Aaron Reppenhagen; Matthias Tautz; Stefan Becker; Wolfram Kuehnel

doi:10.4271/2016-01-1808

We present a recently developed computational scheme for the numerical simulation of flow induced sound for rotating systems. Thereby, the flow is computed by scale resolving simulations using an arbitrary mesh interface scheme for connecting rotating and stationary domains. The acoustic field is modeled by a perturbation ansatz resulting in a convective wave equation based on the acoustic scalar potential and the substational time derivative of the incompressible flow pressure as a source term. We use the Finite-Element (FE) method for solving the convective wave equation and apply a Nitsche type mortaring at the interface between rotating and stationary domains. The whole scheme is applied to the numerical computation of a side channel blower.

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Computational Aeroacoustics for HVAC Systems Utilizing a Hybrid Approach 2016-01-1808

SAE MOBILUS