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Computational Aeroacoustics for HVAC Systems Utilizing a Hybrid Approach
ISSN: 1946-3995, e-ISSN: 1946-4002
Published June 15, 2016 by SAE International in United States
Event: 9th International Styrian Noise, Vibration & Harshness Congress: The European Automotive Noise Conference
Citation: Kaltenbacher, M., Hüppe, A., Reppenhagen, A., Tautz, M. et al., "Computational Aeroacoustics for HVAC Systems Utilizing a Hybrid Approach," SAE Int. J. Passeng. Cars - Mech. Syst. 9(3):1047-1052, 2016, https://doi.org/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.