Results 21 to 30 of about 5,322 (250)
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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An adjoint method for neoclassical stellarator optimization [PDF]
Journal of Plasma Physics, 2019 Stellarators are a promising route to steady-state fusion power. However, to achieve the required confinement, the magnetic geometry must be highly optimized. This optimization requires navigating high-dimensional spaces, often necessitating the use of gradient-based methods.
Elizabeth J. Paul +3 more
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An adjoint method for channel localization [PDF]
Mathematical Medicine and Biology: A Journal of the IMA, 2006 Single cells learn by tuning their synaptic conductances and redistributing their excitable machinery. To reveal its learning rules, one must therefore know how the cell remaps its ion channels in response to physiological stimuli. We here develop an adjoint approach for discerning the non-uniform distribution of a given channel type from knowledge of ...
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Development of an Adjoint Flux Calculation Technique for Exact Perturbation Theory in Monte Carlo Code MCS [PDF]
EPJ Web of ConferencesA calculation technique computing the adjoint flux of perturbed system is developed for the exact perturbation theory in Monte Carlo transport. By using a correlated sampling and iterated fission probability methods together, the adjoint flux of ...
Jo Yunki, Lee Deokjung
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Remote Sensing, 2023 Tidal open boundary conditions (OBCs) of the M2 tidal constituent in the Bohai and Yellow Seas (BYS) are estimated via the assimilation of multi-satellite altimeter data to optimize regional tidal numerical simulation.
Shengyi Jiao +3 more
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Adjoint Optimization for Vehicle External Aerodynamics
International Journal of Automotive Engineering, 2016 Adjoint optimization is an exciting and fast growing field that has many applications in the automotive industry. We focus on the usage of adjoint for the optimization of aerodynamic performance.
Karpouzas Georgios K. +5 more
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Algorithm Developments for Discrete Adjoint Methods [PDF]
AIAA Journal, 2003 This paper presents a number of algorithm developments for adjoint methods using the 'discrete' approach in which the discretisation of the non-linear equations is linearised and the resulting matrix is then transposed. With a new iterative procedure for solving the adjoint equations, exact numerical equivalence is maintained between the linear and ...
Giles, M, Duta, M, Muller, J, Pierce, N
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Use of the Adjoint Method for Controlling the Mechanical Vibrations of Nonlinear Systems
Machines, 2018 In this work, the analytical derivation and the computer implementation of the adjoint method are described. The adjoint method can be effectively used for solving the optimal control problem associated with a large class of nonlinear mechanical systems.
Carmine Maria Pappalardo +1 more
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Numerical Integration Schemes Based on Composition of Adjoint Multistep Methods
Algorithms, 2022 A composition is a powerful tool for obtaining new numerical methods for solving differential equations. Composition ODE solvers are usually based on single-step basic methods applied with a certain set of step coefficients.
Dmitriy Pesterev +4 more
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A multiphase CMAQ version 5.0 adjoint [PDF]
Geoscientific Model Development, 2020 We present the development of a multiphase adjoint for the Community Multiscale Air Quality (CMAQ) model, a widely used chemical transport model. The adjoint model provides location- and time-specific gradients that can be used in various applications ...
S. Zhao +19 more
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