Notes
Slide Show
Outline
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Course on Stability and Transition: Spatial Stability
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Evolution of disturbances in shear flows
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Model problem
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Burger’s eq., cont.
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Gaster’s transformation
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Spatial OS-SQ system
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Spatial OS-SQ system, cont.
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Spatial PPF spectra
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Boundary layer flow
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Spatial IVP
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Optimal spatial growth for PPF
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2D Parabolic Stability Equations (PSE)
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PSE, cont.
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Growthrate and wavenumber
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Non-parallel neutral curve for Blasius BL
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Optimal disturbances in spatial BL
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Spatial optimals, cont.
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The optimization problem
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Optimization algorithm
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Derivation of the action of the adjoint
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Reynoldsnumber dependence
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Optimal growth and disturbance