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Computational fluid dynamics

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Analysis Of Chaotic Natural Convection In A Tall Rectangular Cavity With Non-Isothermal Walls, Heather Dillon, Ashley Emery, Ann Mescher Jan 2013

Analysis Of Chaotic Natural Convection In A Tall Rectangular Cavity With Non-Isothermal Walls, Heather Dillon, Ashley Emery, Ann Mescher

Engineering Faculty Publications and Presentations

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 ...