Date of Award
2009
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Abstract
Boundary layers are regions where turbulence develops easily. In the case where the flow occurs on a surface showing a certain degree of roughness, turbulence eddies will interact with the roughness elements and will produce an acoustic field. This thesis aims at predicting this type of noise with the help of the Computational Fluid Dynamics (CFD) simulation of a wall jet using the Reynolds Average Navier-Stokes (RANS) equations. A frequency spectrum is reconstructed using a representation of the turbulence with uncorrelated sheets of vorticity. Both aerodynamic and acoustic results are compared to experimental measurements of the flow. The CFD simulation of the flow returns consistent results but would benefit from a refinement of the grid. The surface pressure spectrum presents a slope in the high frequencies close to the experimental spectrum. The far field noise spectrum has a 5dB difference to the experiments.
Extent
x, 79 p. : ill. (some col.)
Recommended Citation
Blanc, Jean-Baptiste., "acoustic far field of a turbulent boundary layer flow calculated from RANS simulations of the flow" (2009). Electronic Theses and Dissertations 2000 - 2009. 1607.
https://digitalcommons.fau.edu/etd_general_5/1607
Identifier
FADT368611
Comments
by Jean-Baptiste Blanc.|Thesis (M.S.C.S.)--Florida Atlantic University, 2009.|Includes bibliography.|Electronic reproduction. Boca Raton, Fla., 2009. Mode of access: World Wide Web.|by Jean-Baptiste Blanc.