Results 101 to 110 of about 224,566 (258)

Aerodynamic Optimization of the Nose Shape of a Train Using the Adjoint Method

open access: yesJournal of Applied Fluid Mechanics, 2015
The adjoint method is used in this paper for the aerodynamic optimization of the nose shape of a train. This method has been extensively applied in aircraft or ground vehicle aerodynamic optimization, but is still in progress in train aerodynamics.
Jorge Munoz-Paniagua   +3 more
doaj  

A linearized theory method of constrained optimization for supersonic cruise wing design [PDF]

open access: yes
A linearized theory wing design and optimization procedure which allows physical realism and practical considerations to be imposed as constraints on the optimum (least drag due to lift) solution is discussed and examples of application are presented. In
Carlson, H. W.   +2 more
core   +1 more source

Computer-aided methods for analysis and synthesis of supersonic cruise aircraft structures [PDF]

open access: yes
Computer-aided methods are reviewed which are being developed by Langley Research Center in-house work and by related grants and contracts. Synthesis methods to size structural members to meet strength and stiffness (flutter) requirements are emphasized ...
Giles, G. L.
core   +1 more source

End-to-End Deep-Learning-Based Surrogate Modeling for Supersonic Airfoil Shape Optimization

open access: yesAerospace
Aerodynamic shape design optimization faces challenges due to the computational demands and the vast design space, limiting its practicality and scalability.
Diogo Pereira   +2 more
doaj   +1 more source

Collaborative Optimization of Aerodynamics and Wind Turbine Blades

open access: yesApplied Sciences
This paper explores the application of multidisciplinary design optimization to the blades in horizontal-axis wind turbines. The aerodynamics and structural performance of blades are considered in the optimization framework. In the aerodynamic discipline,
Fushan He   +7 more
doaj   +1 more source

Jig Twist Optimization of Mach 0.745 Transonic Truss-Braced Wing Aircraft and High-Fidelity CFD Validation [PDF]

open access: yes
This paper presents a jig twist optimization study of Mach 0.745 Transonic Truss-Braced Wing (TTBW) aircraft using an in-house developed aero-structural analysis solver VSPAERO coupled to BEAM3D. A vortex-lattice model of the TTBW model is developed, and
Jason Fugate, Nhan Nguyen, Xiong, Juntao
core   +1 more source

Transonic rotor tip design using numerical optimization [PDF]

open access: yes
The aerodynamic design procedure for a new blade tip suitable for operation at transonic speeds is illustrated. For the first time, 3 dimensional numerical optimization was applied to rotor tip design, using the recent derivative of the ROT22 code ...
Langhi, Ronald G., Tauber, Michael E.
core   +1 more source

Fitting aerodynamic forces in the Laplace domain: An application of a nonlinear nongradient technique to multilevel constrained optimization [PDF]

open access: yes
A technique which employs both linear and nonlinear methods in a multilevel optimization structure to best approximate generalized unsteady aerodynamic forces for arbitrary motion is described.
Adams, W. M., Jr., Tiffany, S. H.
core   +1 more source

Multi-disciplinary optimization of aeroservoelastic systems [PDF]

open access: yes
New methods were developed for efficient aeroservoelastic analysis and optimization. The main target was to develop a method for investigating large structural variations using a single set of modal coordinates.
Karpel, Mordechay
core   +1 more source

A CNN-PINN-DRL driven method for shape optimization of airfoils

open access: yesEngineering Applications of Computational Fluid Mechanics
Shape optimization of airfoils is crucial for enhancing the aerodynamic performance of large blades. Nowadays, the integration of computational fluid dynamics and intelligent optimization algorithm has become the dominant approach for airfoil shape ...
Ying Yuan Liu   +3 more
doaj   +1 more source

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