Effect of Far-Field Boundary Conditions on Boundary-Layer TransitionThe effect of far-field boundary conditions on the evolution of a finite-amplitude two-dimensional wave in the Blasius boundary layer is assessed. With the use of the parabolized stability equations (PSE) theory for the numerical computations, either asymptotic, Dirichlet, Neumann or mixed boundary conditions are imposed at various distances from the wall. The results indicate that asymptotic and mixed boundary conditions yield the most accurate mean-flow distortion and unsteady instability modes in comparison with the results obtained with either Dirichlet or Neumann conditions.
Document ID
20040111316
Acquisition Source
Langley Research Center
Document Type
Other
Authors
Bertolotti, Fabio P. (Institute for Computer Applications in Science and Engineering Hampton, VA, United States)
Joslin, Ronald D. (NASA Langley Research Center Hampton, VA, United States)