Boundary conditions for direct computation of aerodynamic sound generationA numerical scheme suitable for the computation of both the near field acoustic sources and the far field sound produced by turbulent free shear flows utilizing the Navier-Stokes equations is presented. To produce stable numerical schemes in the presence of shear, damping terms must be added to the boundary conditions. The numerical technique and boundary conditions are found to give stable results for computations of spatially evolving mixing layers.
Document ID
19930035179
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Colonius, Tim (NASA Ames Research Center Moffett Field, CA, United States)
Lele, Sanjiva K. (Stanford Univ. CA, United States)
Moin, Parviz (Stanford Univ., CA; NASA, Ames Research Center Moffett Field, CA, United States)