Results 21 to 30 of about 125,502 (226)
Adjoint and Direct Characteristic Equations for Two-Dimensional Compressible Euler Flows
Aerospace, 2023 The method of characteristics is a classical method for gaining understanding in the solution of a partial differential equation. It has recently been applied to the adjoint equations of the 2D steady-state Euler equations and the first goal of this ...
Kevin Ancourt +2 more
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Aeroacoustic and Aerodynamic Adjoint-Based Shape Optimization of an Axisymmetric Aero-Engine Intake
Aerospace, 2023 A continuous adjoint-based aeroacoustic optimization, based on a hybrid model including the Ffowcs Williams–Hawkings (FW–H) acoustic analogy, to account for the multidisciplinary design of aero-engine intakes with an axisymmetric geometry, is presented ...
Morteza Monfaredi +4 more
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Adjoint bi-continuous semigroups and semigroups on the space of measures [PDF]
, 2010 For a given bi-continuous semigroup T on a Banach space X we define its adjoint on an appropriate closed subspace X^o of the norm dual X'. Under some abstract conditions this adjoint semigroup is again bi-continuous with respect to the weak topology (X^o,
A. A. Albanese +38 more
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Development of the adjoint of GEOS-Chem [PDF]
, 2006 We present the adjoint of the global chemical transport model GEOS-Chem, focusing on the chemical and thermodynamic relationships between sulfate – ammonium – nitrate aerosols and their gas-phase precursors.
Henze, D. K., Seinfeld, J. H.
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On the Adjoint Operator in Photoacoustic Tomography [PDF]
, 2016 Photoacoustic Tomography (PAT) is an emerging biomedical "imaging from coupled physics" technique, in which the image contrast is due to optical absorption, but the information is carried to the surface of the tissue as ultrasound pulses. Many algorithms
Arridge, Simon R. +4 more
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A new look at Mourre's commutator theory [PDF]
, 2006 Mourre's commutator theory is a powerful tool to study the continuous spectrum of self-adjoint operators and to develop scattering theory. We propose a new approach of its main result, namely the derivation of the limiting absorption principle from a so ...
Golénia, Sylvain, Jecko, Thierry
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Multi-Fidelity Gradient-Based Strategy for Robust Optimization in Computational Fluid Dynamics
Algorithms, 2020 Efficient Robust Design Optimization (RDO) strategies coupling a parsimonious uncertainty quantification (UQ) method with a surrogate-based multi-objective genetic algorithm (SMOGA) are investigated for a test problem in computational fluid dynamics (CFD)
Aldo Serafino +2 more
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Superconvergence for Neumann boundary control problems governed by semilinear elliptic equations [PDF]
, 2013 This paper is concerned with the discretization error analysis of semilinear Neumann boundary control problems in polygonal domains with pointwise inequality constraints on the control.
Krumbiegel, Klaus, Pfefferer, Johannes
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International Journal of Mathematics and Mathematical Sciences, 1995 A singular non-self-adjoint boundary value problem is considered. This problem has a discontinuous coefficient with a spectral parameter in the boundary condition. Some solutions of the eigenvalue equation are given.
A. A. Darwish
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Spectral analysis of transfer operators associated to Farey fractions [PDF]
, 2007 The spectrum of a one-parameter family of signed transfer operators associated to the Farey map is studied in detail. We show that when acting on a suitable Hilbert space of analytic functions they are self-adjoint and exhibit absolutely continuous ...
Bonanno, Claudio +2 more
core +2 more sources