Global linear instability
WebApr 27, 2010 · It presents a coherent and rigorous linearized approach, which enables both to describe the dynamics of commonly encountered open-flows and to design open-loop and closed-loop control strategies, in view of suppressing or delaying instabilities. WebMar 24, 2014 · This article presents techniques for the analysis of fluid systems. It adopts an optimization-based point of view, formulating common concepts such as stability and receptivity in terms of a cost functional to be optimized subject to constraints given by the governing equations.
Global linear instability
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WebJan 20, 2024 · Axial–azimuthal instabilities of a Hall-thruster plasma discharge are investigated using fluid model and a linear global stability approach, appropriate to the large axial inhomogeneity of the equilibrium solution. Electron pressure and electron inertia are considered in both the equilibrium and perturbed solutions. Fourier transform in time … WebNov 25, 2016 · Modal global linear instability analysis is performed using, for the first time ever, the lattice Boltzmann method (LBM) to analyze incompressible flows with two and …
WebApr 8, 2024 · The global linear stability of the family of infinite rotating-cone boundary layers in an otherwise still fluid is investigated using a velocity-vorticity form of the linearized Navier-Stokes equations. The formulation is separable … WebMar 16, 2024 · The global instability spectrum contains two distinct types of modes: few isolated eigenmodes (branch D) lying in the vicinity of the windward ray, and an arc branch (branch S) of eigenmodes in...
WebApr 4, 2016 · We perform BiGlobal linear stability analysis on flow past a NACA0012 airfoil at 16° angle of attack and Reynolds number ranging from 400 to 1000. The steady-state two-dimensional base flows are computed using a well-tested finite difference code in combination with the selective frequency damping method. WebSep 30, 2014 · We apply the DMD technique to flows confined in an L‐shaped cavity and compare the resulting modes to their counterparts issued from classic, matrix forming, linear instability analysis (i.e. BiGlobal approach) and direct numerical simulations. Results show that the DMD technique, which uses snapshots generated by a 3D… View on Wiley …
WebApr 13, 2024 · The linear stability of a convective flow in a plane vertical channel caused by internal heat sources with constant density is analyzed in [ 11 ]. It is shown in [ 11] …
WebIn the fully global context, the basic flow and the instabilities do not have to be characterized by widely separated length scales, and the dynamics is then viewed … heating a skyscraper in the winterWebJul 8, 2024 · The global stability characteristics of the crossflow instability over a conical configuration are uncovered for the first time. In the global eigenvalue spectra of the … movies with mason thamesWebOct 1, 2015 · The global linear stability, where we assume no homogeneity in either of the spatial directions, of a two-dimensional laminar base flow through a spatially periodic converging–diverging channel is studied at low Reynolds numbers. A large wall-waviness amplitude is used to achieve instability at critical Reynolds numbers below ten. movies with mary kate and ashleyWebOct 1, 2015 · The global linear stability, where we assume no homogeneity in either of the spatial directions, of a two-dimensional laminar base flow through a spatially periodic … movies with mary youtubeWebThis article reviews linear instability analysis of flows over or through complex two-dimensional (2D) and 3D geometries. In the three decades since it first appeared in the literature, global instability analysis, based on the solution of the multidimensional … Annual Reviews AbstractHydrodynamic stability theory has recently seen a great deal of … The objective of this article is to review some developments in the use of adjoint … movies with masonic themesWebSep 12, 2024 · The stability of low-speed jets in cross-flow (JICF) is studied using tri-global linear stability analysis (GLSA). Simulations are performed at a Reynolds … movies with mary pickfordWebApr 13, 2024 · The linear stability of a convective flow in a plane vertical channel caused by internal heat sources with constant density is analyzed in [ 11 ]. It is shown in [ 11] that depending on the value of the Prandtl number, two types of instability exist: (a) shear instability and (b) buoyant instability. Similar results are obtained later in [ 12 ]. heating a semi boneless ham