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On the effect of feedback control on benard convection in a boussinesq fluid
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Shortis, Trudi A. Hall, Philip |
| Copyright Year | 1996 |
| Description | The effect of nonlinear feedback control strategies on the platform of convection in a Boussinesq fluid heated from below is investigated. In the absence of the control, given that non-Boussinesq effects may be neglected, it is well known that convection begins in the form of a supercritical bifurcation to rolls. Non-Boussinesq behaviour destroys the symmetry of the basic state, and through a subcritical bifurcation leads to the formation of hexagonal cells. Here we discuss the influence of regulation of the lower surface temperature by means of a control mechanism, made up of a combination of a proportional linear and nonlinear controller, on the stability of the hexagonal cell pattern. |
| File Size | 1078844 |
| Page Count | 32 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960020959 |
| Archival Resource Key | ark:/13960/t17m56r34 |
| Language | English |
| Publisher Date | 1996-02-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Perturbation Theory Convective Heat Transfer Nonlinear Feedback Convection Currents Surface Temperature Feedback Control Rayleigh Number Benard Cells Temperature Effects Boussinesq Approximation Nonlinearity Hexagonal Cells Boundary Layer Equations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
