Results 61 to 70 of about 2,483 (203)

Wave Drag Reduction of SC(2)0410 Airfoil using New Developed Inviscid Compressible Adjoint Method

open access: yesJournal of Applied Fluid Mechanics, 2020
A supercritical airfoil is geometrically optimized using the new developed adjoint compressible lattice Boltzmann method. Minimizing the drag coefficient and eliminating the shock wave on the supercritical airfoil surface are considered as the cost ...
R. Kamali-Moghadam   +2 more
doaj  

The Continuous Adjoint Method On Graphics Processing Units For Compressible Flows

open access: yes, 2017
Presentation illustrating the continuous adjoint method on graphics processing units for compressible ...
Ghavami Nejad, M.,   +3 more
openaire   +2 more sources

Hierarchical Differentiable Fluid Simulation

open access: yesComputer Graphics Forum, EarlyView.
We introduce a two‐step algorithm that significantly reduces memory usage for solving control problems using differentiable fluid simulation techniques: our method first optimizes for bulk forces at reduced resolution, then refines local details over sub‐domains while maintaining differentiability. In trading runtime for memory, it enables optimization
Xiangyu Kong   +4 more
wiley   +1 more source

Discrete and Continuous Adjoint-Based Aerostructural Wing Shape Optimization of a Business Jet

open access: yesFluids
This article presents single- and multi-disciplinary shape optimizations of a generic business jet wing at two transonic cruise flow conditions. The studies performed are based on two high-fidelity gradient-based optimization tools, assisted by the ...
Konstantinos Tsiakas   +7 more
doaj   +1 more source

An efficient methodology to analyze plasma edge model parameter sensitivities

open access: yesNuclear Materials and Energy, 2017
Quantifying uncertainties on code outputs is an important step for code-based design and scenario development. Because of the high computational cost of plasma edge transport simulations, the propagation of uncertainties on input parameters quickly ...
Maarten Blommaert   +2 more
doaj   +1 more source

Survey on differential estimators for 3d point clouds

open access: yesComputer Graphics Forum, EarlyView.
Abstract Recent advancements in 3D scanning technologies, including LiDAR and photogrammetry, have enabled the precise digital replication of real‐world objects. These methods are widely used in fields such as GIS, robotics, and cultural heritage. However, the point clouds generated by such scans are often noisy and unstructured, posing challenges for ...
Léo Arnal–Anger   +4 more
wiley   +1 more source

Use of discrete sensitivity analysis to transform explicit simulation codes into design optimization codes

open access: yesElectronic Journal of Differential Equations, 2000
Sensitivity analysis is often used in high fidelity numerical optimization to estimate design space derivatives efficiently. Typically, explicit codes are combined with the adjoint formulation of continuous sensitivity analysis, which requires the ...
Clarence O. E. Burg
doaj  

Non‐Rigid 3D Shape Correspondences: From Foundations to Open Challenges and Opportunities

open access: yesComputer Graphics Forum, EarlyView.
Abstract Estimating correspondences between deformed shape instances is a long‐standing problem in computer graphics; numerous applications, from texture transfer to statistical modelling, rely on recovering an accurate correspondence map. Many methods have thus been proposed to tackle this challenging problem from varying perspectives, depending on ...
A. Zhuravlev   +14 more
wiley   +1 more source

Adjoint-based optimization method for aerodynamic-stealth of aircraft considering the scattering characteristics of absorbing materials

open access: yesKongqi donglixue xuebao
With the continuous advancement of radar detection and counter-detection technologies, relying solely on stealth shaping can hardly meet the stealth performance requirements of advanced aircraft in a wide electromagnetic frequency domain.
Weifeng Sun   +3 more
doaj   +1 more source

Adapting computational optimization concepts from aeronautics to nuclear fusion reactor design

open access: yesEPJ Web of Conferences, 2012
Even on the most powerful supercomputers available today, computational nuclear fusion reactor divertor design is extremely CPU demanding, not least due to the large number of design variables and the hybrid micro-macro character of the flows. Therefore,
Baelmans M., Reiter D., Dekeyser W.
doaj   +1 more source

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