Results 21 to 30 of about 12,436,371 (298)
Nonlinear control of unsteady finite-amplitude perturbations in the Blasius boundary-layer flow [PDF]
, 2013 The present work provides an optimal control strategy, based on the nonlinear Navier–Stokes equations, aimed at hampering the rapid growth of unsteady finite-amplitude perturbations in a Blasius boundary-layer flow.
DE PALMA, Pietro +2 more
core +1 more source
Optimal boundary control problems for a hierarchical age-structured two-species model
Journal of Inequalities and Applications, 2022 This paper discusses the optimal control problems for a nonlinear age-structured two-species model, where elder individuals are more competitive than younger ones, and each species is described by a nonlinear integropartial differential equation with a ...
Rong Liu, Nan Zhou, Ze-Rong He
doaj +1 more source
On Reflecting Boundary Problem for Optimal Control [PDF]
SIAM Journal on Control and Optimization, 2003 This paper deals with Mayer's problem for controlled systems with reflection on the boundary of a closed subset K. The main result is the characterization of the possibly discontinuous value function in terms of a unique solution in a suitable sense to a partial differential equation of Hamilton–Jacobi–Bellman type.
openaire +4 more sources
Quaternary Boundary Optimal Control Problem Dominating by Quaternary Nonlinear Parabolic System
Al-Mustansiriyah Journal of Science, 2023 In this paper, our purpose is to study the quaternary continuous classical boundary optimal control vector problem (QCCBOCVP) dominated by the quaternary nonlinear parabolic boundary value problem (QNLPBVP).
Fetan J. Naji +2 more
doaj +1 more source
An Optimal Control Problem by a Hyperbolic System with Boundary Delay
Известия Иркутского государственного университета: Серия "Математика", 2021 The paper deals with an optimal control problem by a system of semilinear hyperbolic equations with boundary differential conditions with delay. This problem is considered for smooth controls. Because this requirement it is impossible to prove optimality
A.V. Arguchintsev, V.P. Poplevko
doaj +1 more source
IEEE Access, 2019 In this paper, we propose an efficient computational boundary control strategy for reducing water pressure shock effects generated by the suddenly operation of the valve closure located at the end of a fluid flow pipeline.
Zhigang Ren, Tehuan Chen, Zhijia Zhao
doaj +1 more source
Semidiscrete approximations of optimal Robin boundary control problems constrained by semilinear parabolic PDE [PDF]
, 2006 An optimal Robin boundary control problem associated with semilinear parabolic partial differential equations is considered. Existence of an optimal solution is proved and an optimality system of equations is derived.
Chrysafinos, K +5 more
core +1 more source
Optimal Transpiration Boundary Control for Aeroacoustics [PDF]
AIAA Journal, 2003 We consider the optimal boundary control of aeroacoustic noise, governed by the two-dimensional unsteady compressible Euler equations. The control is the time- and space-varying wall normal velocity on a subset of an otherwise solid wall. The objective functional to be minimized is a measure of acoustic amplitude. Optimal transpiration boundary control
S. Scott Collis +2 more
openaire +1 more source
Optimal wave packets in a boundary layer and initial phases of a turbulent spot [PDF]
, 2010 The three-dimensional global optimal dynamics of a flat-plate boundary layer is studied by means of an adjoint-based optimization in a spatial domain of long – but finite – streamwise dimension. The localized optimal initial perturbation is characterized
DE PALMA, Pietro +6 more
core +1 more source
Advances in Pseudospectral Methods for Optimal Control [PDF]
, 2008 The article of record as published may be located at http://dx.doi.org/10.2514/6.2008-7309Recently, the Legendre Pseudospectral (PS) method migrated from theory to fight application onboard the International Space Station for performing a finite-horizon,
Fahroo, Fariba, Ross, I. Michael
core +3 more sources