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Linear and nonlinear pattern selection in rayleigh-benard stability problems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Davis, Sanford S. |
| Copyright Year | 1993 |
| Description | A new algorithm is introduced to compute finite-amplitude states using primitive variables for Rayleigh-Benard convection on relatively coarse meshes. The algorithm is based on a finite-difference matrix-splitting approach that separates all physical and dimensional effects into one-dimensional subsets. The nonlinear pattern selection process for steady convection in an air-filled square cavity with insulated side walls is investigated for Rayleigh numbers up to 20,000. The internalization of disturbances that evolve into coherent patterns is investigated and transient solutions from linear perturbation theory are compared with and contrasted to the full numerical simulations. |
| File Size | 1234230 |
| Page Count | 22 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940030865 |
| Archival Resource Key | ark:/13960/t44r2t99s |
| Language | English |
| Publisher Date | 1993-05-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Flow Stability Perturbation Theory Cavities Rayleigh-benard Convection Algorithms Finite Difference Theory Nonlinearity Computerized Simulation Rayleigh Number Walls Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
