1 / 1

Upper wall: T 1

Robust Control of Nonlinear Rayleigh-Benard Convection Jason L. Speyer and Arthur C. Or AFOSR Grant No. FA49620-00-1-0166. Upper wall: T 1. Sensor planes. Objective: Suppress a fully-developed state of convection in a layer of fluid by active robust feedback control.

bela
Télécharger la présentation

Upper wall: T 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Robust Control of Nonlinear Rayleigh-Benard ConvectionJason L. Speyer and Arthur C. OrAFOSR Grant No. FA49620-00-1-0166 Upper wall: T1 Sensor planes • Objective: Suppress a fully-developed state of convection in a layer of fluid by active robust feedback control. • Application: Enhacement in the manufacturing of wafers and composite materials. • Method:Based on the linearization of thenonlinear, 3D plant model (Oberbeck-Boussinesq Eqs), robust LQG controllers are developed. z x T+dT Lower wall: T2+qc (Actuator plane) • Achievments: Initial steady convective pattern at 5 times critical Rayleigh no. (at Prandtl no. =7) completely suppressed by control action in the nonlinear simulation. • Future Efforts:Raise range of stabilization beyond 5 times critical value; develop reduced-order controllers;include actuator dynamics; perform laboratory experiment to demonstrate the implementation of the concept. Perturbation isotherms

More Related