Results 1 to 10 of about 3,216,540 (223)
A continuous adjoint for photo-acoustic tomography of the brain [PDF]
Inverse Problems, 2018 We present an optimisation framework for photo-acoustic tomography of the brain based on a system of coupled equations that describe the propagation of sound waves in linear isotropic inhomogeneous and lossy elastic media with absorption and physical ...
A. Javaherian, S. Holman
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Continuous adjoint complement to the Blasius equation [PDF]
Physics of Fluids, 2020 The manuscript is concerned with a continuous adjoint complement to two-dimensional, incompressible, first-order boundary-layer equations for a flat plate boundary-layer. The text is structured into three parts.
Niklas Kühl, P. Müller, T. Rung
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On the Adjoint of a Strongly Continuous Semigroup [PDF]
Abstract and Applied Analysis, 2008 Using some techniques from vector integration, we prove the weak measurability of the adjoint of strongly continuous semigroups which factor through Banach spaces without isomorphic copy of l1; we also prove the strong continuity away from zero of the adjoint if the semigroup factors through Grothendieck spaces.
Bárcenas, Diómedes +1 more
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On the Discretization of the Continuous Adjoint to the Euler Equations in Aerodynamic Shape Optimization [PDF]
XI International Conference on Adaptive Modeling and Simulation, 2023 In aerodynamic shape optimization, gradient-based algorithms usually rely on the adjoint method to compute gradients. Working with continuous adjoint offers a clear insight into the adjoint equations and their boundary conditions, but discretization ...
M. Kontou +3 more
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The unsteady continuous adjoint method for minimizing flow-induced sound radiation
Journal of Computational Physics, 2019 This paper develops the unsteady continuous adjoint method for aeroacoustic optimization problems governed by time-dependent turbulent flows. To predict the flow-induced sound radiation from a body in free-stream, an incompressible Improved Delayed ...
Evangelos M Papoutsis-Kiachagias +1 more
exaly +2 more sources
International Journal for Numerical Methods in Fluids, 2023 This work presents a novel volumetric parameterization technique along with the continuous adjoint method to support gradient‐based CFD shape optimization of turbomachinery stages.
X. Trompoukis +3 more
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The Physics of Fluids, 2023 This study establishes a compressible continuous adjoint data assimilation (C2ADA) approach for reproducing a complete mean flow from sparse wall pressure observations.
Sen Li +3 more
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Continuity is an Adjoint Functor [PDF]
The American Mathematical Monthly, 2015 To appear in the American Mathematical ...
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International Journal of Turbomachinery, Propulsion and Power, 2021 This paper presents an adjoint-based shape optimization framework and its demonstration in a conjugate heat transfer problem in a turbine blading. The gradient of the objective function is computed based on the continuous adjoint method, which also ...
X. Trompoukis +4 more
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Continuous and discrete adjoints to the Euler equations for fluids [PDF]
International Journal for Numerical Methods in Fluids, 2011 SUMMARYAdjoints are used in optimization to speed‐up computations, simplify optimality conditions or compute sensitivities. Because time is reversed in adjoint equations with first‐order time derivatives, boundary conditions, and transmission conditions through shocks can be difficult to understand.
Frédéric Alauzet, Olivier Pironneau
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