Results 21 to 30 of about 1,838,692 (271)
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 ...
Xenofon Trompoukis +4 more
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Continuous Adjoint Method for Unstructured Grids [PDF]
AIAA Journal, 2008 Adjoint-based shape optimization methods have proven to be computationally efficient for aerodynamic problems. The majority of the studies on adjoint methods have used structured grids to discretize the computational domain. Because of the potential advantages of unstructured grids for complex configurations, in this study we have developed and ...
Antony Jameson +2 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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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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Derivation of the Adjoint Drift Flux Equations for Multiphase Flow
Fluids, 2020 The continuous adjoint approach is a technique for calculating the sensitivity of a flow to changes in input parameters, most commonly changes of geometry.
Shenan Grossberg +2 more
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RANS turbulence treatment for continuous adjoint optimization [PDF]
Proceeding of THMT-15. Proceedings of the Eighth International Symposium On Turbulence Heat and Mass Transfer, 2015 This paper discusses the implementational aspects related to the turbulence modelling for continuous adjoint optimization. The starting point is the derivation of equations of the high-Reynolds number k- model of turbulence in the framework of continuous adjoint optimization.
Popovac +4 more
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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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Continuous Adjoint Approach for the Spalart-Allmaras Model in Aerodynamic Optimization [PDF]
AIAA Journal, 2011 In this paper, the continuous adjoint method to compute shape sensitivities in aerodynamic design with turbulence modeling is described and developed. The focus is on compressible flows described by the Reynolds-averaged Navier-Stokes equations and the classical Spalart-Allmaras model for turbulence. Turbulence modeling usually requires, in particular,
Bueno-Orovio, A. +3 more
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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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