DOAJ Open Access 2023

A direct-hybrid CFD/CAA method based on lattice Boltzmann and acoustic perturbation equations

Gondrum Miro Satcunanathan Sutharsan Niemöller Ansgar Meinke Matthias Schröder Wolfgang

Abstrak

The accuracy of two direct coupled two-step CFD/CAA methods is discussed. For the flow field either a finite-volume (FV) method for the solution of the Navier–Stokes equations or a lattice Boltzmann (LB) method is coupled to a discontinuous Galerkin (DG) method for the solution of the acoustic perturbation equations. The coupling takes advantage of a joint Cartesian mesh allowing for the exchange of the acoustic sources without MPI communication. An immersed boundary treatment of the acoustic scattering from solid bodies by a novel solid wall formulation is implemented and validated in the DG method. Results for the case of a spinning vortex pair and the low Reynolds number unsteady flow around a circular cylinder show that a solution with comparable accuracy is obtained for the two direct-hybrid methods when using identical mesh resolution.

Topik & Kata Kunci

Acoustics in engineering. Acoustical engineering Acoustics. Sound

Penulis (5)

Gondrum Miro

Satcunanathan Sutharsan

Niemöller Ansgar

Meinke Matthias

Schröder Wolfgang

Format Sitasi

APA MLA BibTeX

Miro, G., Sutharsan, S., Ansgar, N., Matthias, M., Wolfgang, S. (2023). A direct-hybrid CFD/CAA method based on lattice Boltzmann and acoustic perturbation equations. https://doi.org/10.1051/aacus/2022062

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1051/aacus/2022062
Akses: Open Access ✓