Acoustic Liner with a Grazing Background Flow
Application ID: 49841
This model demonstrates how to compute the acoustic properties of an acoustic liner with a grazing flow. The liner consists of eight resonators with thin slits. The background grazing flow is at Mach number 0.3. The sound pressure level above the liner is computed and can be compared to results from a published research paper.
The model first computes the flow using the SST turbulence model available in the CFD Module. The acoustics are then computed using the Linearized Navier-Stokes, Frequency Domain interface of the Acoustics Module.
Reference paper: C.K.W. Tam, N.N. Pastouchenko, M.G. Jones, and W.R. Watson, "Experimental validation of numerical simulations for an acoustic liner in grazing flow: Self-noise and added drag," JSV 333 (2014).
Learn more in the related blog post: "Modeling Aeroacoustics with the Linearized Navier-Stokes Equations"
This model example illustrates applications of this type that would nominally be built using the following products:Acoustics Module CFD Module
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.