Who should attend:
New Actran users. Experience with Actran is not required. Acoustics background is preferable.
Overview:
In this training you will learn how to use dedicated Actran features for computing the near and the far field noise of a turbomachine. Specific acoustic excitations and non reflecting boundary conditions with duct modes, acoustic liners and handling of the mean flow are topics addressed in this sessions.
Topics covered:
- Convected acoustic propagations: convected Helmholtz equations (and Discontinuous Galerkin Methods)
- Non-reflecting boundary conditions: infinite elements, PML, duct modes ( and buffer zones)
- Excitations: duct modes and Thompson boundary condition
- Duct modes computation from CFD unsteady results
- Intake and Exhaust noise
- Handling of a mean flow computed by an external tool or by the Actran compressible flow solver
- Use of the adapted numerical method:
- 2D axisymmetric model
- 3D half model: automatic symmetric and anti-symmetric computations and recombination - Post processing capabilities: acoustic directivities, broadband computations, radiated powers, frequency response functions and maps