{"@context":"http://iiif.io/api/presentation/2/context.json","@type":"sc:Manifest","@id":"https://iiif.quartexcollections.com/portland/iiif/a449b16f-642f-4b34-9c0f-aba4e19527c7/manifest","label":"Analysis of Chaotic Natural Convection in a Tall Rectangular Cavi","metadata":[{"label":"Title","value":"Analysis of Chaotic Natural Convection in a Tall Rectangular Cavity with Non-isothermal Walls"},{"label":"Collection","value":["Engineering Faculty Publications"]},{"label":"Relation","value":"egr"},{"label":"Author","value":"Heather Dillon, Ashley Emery, Ann Mescher"},{"label":"Journal Title","value":"Frontiers in Heat and Mass Transfer"},{"label":"Abstract","value":"A computational model is presented that extends prior work on unsteady natural convection in a tall rectangular cavity with aspect ratio 10 and applies Proper Orthogonal Decomposition to the results.The solution to the weakly compressible Navier-Stokes equation is computed for a range of Rayleigh numbers between 2x10^7 and 2.2x10^8 with Prandtl number 0.71.A detailed spectral analysis shows dynamic system behavior beyond the Hopf bifurcation that was not previously observed.The wider Rayleigh range reveals new dynamic system behavior for the rectangular geometry, specifically a return to a stable oscillatory behavior that was not predicted in prior work.Proper Orthogonal Decomposition (POD) has been used to analyze the computational results.Five eigenvalue modes were required to capture correctly the basic flow structure.The POD failed to capture subtle aspects of the flow structure at high Rayleigh numbers for the model, indicating that a POD and Galerkin projection for several Rayleigh numbers will be needed to reproduce the complex behavior of the system."},{"label":"DOI","value":"10.5098/hmt.v4.2.3004"},{"label":"Volume","value":"4"},{"label":"Issue","value":"2"},{"label":"Publication Date","value":"D:00 M:00 Y:2013"},{"label":"Author Supplied Keywords","value":"Proper Orthogonal Decomposition, natural convection, reduced order modeling, computational fluid dynamics"},{"label":"Publication Information","value":"Frontiers in Heat and Mass Transfer, 2013, Volume 4, Issue 2, 1-9. © 2013 The Authors Archived version is the final published version."}],"description":"Analysis of Chaotic Natural Convection in a Tall Rectangular Cavity with Non-isothermal Walls","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://iiif.quartexcollections.com/portland/iiif/a449b16f-642f-4b34-9c0f-aba4e19527c7/canvas/_1","@type":"sc:Canvas","label":"Analysis of Chaotic Natural Convection in a Tall Rectangular 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