Accuracy of finite-volume discretizations for the bifurcating natural-convection flow in a square cavity
Journal Article
·
· Numerical Heat Transfer. Part B, Fundamentals; (United States)
- Delft Univ. of Tech., Delft (Netherlands)
This study investigates the numerical accuracy of the finite-volume discretization for the natural-convection flow of air in a square cavity with differentially heated vertical walls and adiabatic horizontal walls. The regime of high Rayleigh numbers is considered, in which the steady flow bifurcates to a periodic unsteady flow. Investigated is how the accuracy depends on (1) the numerical discretization scheme for the convective fluxes and (2) the number of grid points. The fourth-order central interpolation scheme for the convective derivative turns out to be the most accurate scheme. At least 240[sup 2] grid points are required to obtain good accuracy for the amplitude of the oscillations.
- OSTI ID:
- 5869698
- Journal Information:
- Numerical Heat Transfer. Part B, Fundamentals; (United States), Journal Name: Numerical Heat Transfer. Part B, Fundamentals; (United States) Vol. 24:2; ISSN 1040-7790; ISSN NHBFEE
- Country of Publication:
- United States
- Language:
- English
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