Journal ArticleDOI
Instability wave excitation by a localized vibrator in the boundary layer
Anatoli Tumin,A. V. Fedorov +1 more
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This article is published in Journal of Applied Mechanics and Technical Physics.The article was published on 1984-11-01. It has received 39 citations till now. The article focuses on the topics: Boundary layer thickness & Boundary layer control.read more
Citations
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Global Linear Instability
TL;DR: A review of linear instability analysis of flows over or through complex 2D and 3D geometries is presented in this article, where the authors make a conscious effort to demystify both the tools currently utilized and the jargon employed to describe them, demonstrating the simplicity of the analysis.
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Adjoint Equations in Stability Analysis
Paolo Luchini,Alessandro Bottaro +1 more
TL;DR: Adjoint-based sensitivity analysis finds both analytical and numerical applications much beyond those originally imagined as mentioned in this paper, and can be used to identify optimal perturbations, pinpoint the most receptive path to break down, select the most destabilizing base-flow defect in a nominally stable configuration, and map the structural sensitivity of an oscillator.
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Three-dimensional spatial normal modes in compressible boundary layers
TL;DR: In this paper, the Cauchy problem is solved under the assumption of a flnite growth rate of the disturbances, and the solution can be presented as an expansion into a biorthogonal eigenfunction system, which can be used for decomposition of ∞ow flelds derived from computational studies when pressure, temperature and all the velocity components, together with some of their derivatives, are available.
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Receptivity of the compressible mixing layer.
TL;DR: In this paper, a combined theoretical/computational approach was proposed to derive expressions for receptivity in terms of the local value of the adjoint solution of the Navier-Stokes equations.
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Adjoint Methods as Design Tools in Thermoacoustics
TL;DR: In this article, the authors provide a review of the application of adjoint sensitivity analysis to thermoacoustics, which is characterized by degenerate and non-degenerate nonlinear eigenvalue problems.
References
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Journal ArticleDOI
Laminar Boundary-Layer Oscillations and Stability of Laminar Flow
G. B. Schubauer,H. K. Skramstad +1 more
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On the generation of spatially growing waves in a boundary layer
TL;DR: In this paper, the form of excitation chosen to represent a vibrating ribbon of the type used by Schubauer to force disturbance in boundary layers is shown to be a spatially growing one, which is described far downstream by an eigenmode of the system which has a complex wave number.
Laminar-boundary-layer oscillations and transition on a flat plate ; NACA Technical Reports
G. B. Schubauer,H. K. Skramstad +1 more
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The linear problem of a vibrator in a subsonic boundary layer
TL;DR: In this paper, the subsonic flow over a flat plate with a fitted to it triangular vibrator which effects harmonic oscillations is studied, where the plate and vibrator are assumed heatinsulated and the vibrator dimensions and oscillation frequency is such that the flow can be defined by equations of the boundary layer with self-induced pressure.
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Generation of instability waves in a boundary layer by external turbulence
TL;DR: In this article, the same problem was analyzed, with consideration of a slight non-parallelism of the flow in the boundary layer, and analytical expressions were obtained for determination of the intensity of Tolmin-Schlichting wave sources.