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Computations of a laminar backward-facing step flow atRe=800 with a spectral domain decomposition method by Jayant Keskar; D.A. Lyn is a Engineering article available to read on EtoBox.
What is Computations of a laminar backward-facing step flow atRe=800 with a spectral domain decomposition method about?
The two-dimensional laminar incompressible flow over a backward-facing step is computed using a spectral domain decomposition approach. A minimum number of subdomains (two) is used; high resolution being achieved by increasing the order of the basis Chebyshev polynomial. Results for the case of a Reynolds number of 800 are presented and compared in detail with benchmark computations. Stable accurate steady flow solutions were obtained using substantially fewer nodes than in previously reported simulations. In addition, the problem of outflow boundary conditions was examined on a shortened domain. Because of their more global nature, spectral methods are particularly sensitive to imposed boundary conditions, which may be exploited in examining the effect of artificial (non-physical) outflow boundary conditions. Two widely used set of conditions were tested: pseudo stress-free conditions and zero normal gradient conditions. Contrary to previous results using the finite volume approach, the latter is found to yield a qualitatively erroneous yet stable flow-field.
Who reads Computations of a laminar backward-facing step flow atRe=800 with a spectral domain decomposition method?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Jayant Keskar; D.A. Lyn
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0271-2091)
- Published
- 1999
- Language
- EN
- Field
- Engineering (Physical Sciences)