Optimal placement of the multiple magnetic sources for the MHD flow in a rectangular duct
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Dosyalar
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper, we consider the optimal control of the fully developed, steady, laminar, unidirectional flow of an incompressible electrically conducting fluid in a long channel of rectangular cross-section (duct). The magnetic field is generated by thin wires carrying electric current and placed along, below and/or above the channel, forming magnetic sources at the bottom and top walls of the duct. Control problem is designed to find the optimal placement of magnetic sources by using the axis coordinates of the sources as control variables to achieve the desired fluid behavior. Optimality conditions are obtained via adjoint method following discretize-then-optimize procedure. Optimization is performed by a gradient-based algorithm with bounds on the controls. The coupled system of magnetohydrodynamic (MHD) flow equations is solved by using FEM with quadratic elements. Control simulations are conducted by one, two and multiple sources for various values of the Hartmann number. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Açıklama
Anahtar Kelimeler
FEM, MHD, Optimal control, Finite element method, Magnetohydrodynamics, Electrically conducting fluids, Magnetic sources, Magnetic-field, Magnetohydrodynamics flows, Optimal controls, Optimal placements, Rectangular cross-sections, Rectangular ducts, Thin wires, Unidirectional flow, Ducts
Kaynak
Optimization and Engineering
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
