Results 11 to 20 of about 3,117,054 (342)
Linear-Time FPT Algorithms via Network Flow [PDF]
, 2013 In the area of parameterized complexity, to cope with NP-Hard problems, we introduce a parameter k besides the input size n, and we aim to design algorithms (called FPT algorithms) that run in O(f(k)n^d) time for some function f(k) and constant d. Though
Iwata, Yoichi +2 more
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Flow Cell Characterisation: Flow Visualisation, Pressure Drop and Mass Transport at 2D Electrodes in a Rectangular Channel [PDF]
, 2020 The reaction environment in a C-Flow Lab 5 × 5® laboratory-scale electrochemical flow cell was characterised in terms of fluid flow, hydraulic pressure drop and space averaged mass transport coefficient. The cell was studied in flow-by configuration with
Arenas, Luis +3 more
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Linear Instability of Turbulent Channel Flow
Physical Review Letters, 2022 Laminar-turbulent pattern formation is a distinctive feature of the intermittency regime in subcritical plane shear flows. By performing extensive numerical simulations of the plane channel flow, we show that the pattern emerges from a spatial modulation of the turbulent flow, due to a linear instability.
Pavan V. Kashyap +2 more
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Observations of Reduced Electron Gyroscale Fluctuations in National Spherical Torus Experiment H-Mode Plasmas with Large E X B Flow Shear [PDF]
, 2019 Electron gyroscale fluctuation measurements in National Spherical Torus Experiment H-mode plasmas with large toroidal rotation reveal fluctuations consistent with electron temperature gradient (ETG) turbulence.
Bell, RE +11 more
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Lipschitz conjugacy of linear flows [PDF]
Journal of the London Mathematical Society, 2009 In this paper, we characterize Lipschitz conjugacy of linear flows on Rd algebraically. We show that two hyperbolic linear flows are Lipschitz conjugate if and only if the Jordan forms of the system matrices are the same except for the simple Jordan blocks where the imaginary parts of the eigenvalues may differ.
Kawan, Christoph, Stender, Torben
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Adaptive linear solution process for single-phase Darcy flow
Oil & Gas Science and Technology, 2020 This article presents an adaptive approach for solving linear systems arising from self-adjoint Partial Differential Equations (PDE) problems discretized by cell-centered finite volume method and stemming from single-phase flow simulations. This approach
Anciaux-Sedrakian Ani +3 more
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Resonant Kelvin-Helmholtz modes in sheared relativistic flows [PDF]
, 2007 Qualitatively new aspects of the (linear and non-linear) stability of sheared relativistic (slab) jets are analyzed. The linear problem has been solved for a wide range of jet models well inside the ultrarelativistic domain (flow Lorentz factors up to 20;
A. Celotti +21 more
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Quasi Linear Flows on Tori:�Regularity of their Linearization [PDF]
Communications in Mathematical Physics, 1998 Under suitable conditions a flow on a torus $C^{(p)}$--close, with $p$ large enough, to a quasi periodic diophantine rotation is shown to be conjugated to the quasi periodic rotation by a map that is analytic in the perturbation size. This result is parallel to Moser's theorem stating conjugability in class $C^{(p')}$ for some $p'
BONETTO F. +3 more
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Modal and nonmodal stability analysis of electrohydrodynamic flow with and without cross-flow [PDF]
, 2015 We report the results of a complete modal and nonmodal linear stability analysis of the electrohydrodynamic flow (EHD) for the problem of electroconvection in the strong injection region.
Atten +11 more
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Kinematics of a Fluid Ellipse in a Linear Flow
Fluids, 2018 A four-parameter kinematic model for the position of a fluid parcel in a time-varying ellipse is introduced. For any ellipse advected by an arbitrary linear two-dimensional flow, the rates of change of the ellipse parameters are uniquely determined by ...
Jonathan M. Lilly
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