Results 31 to 40 of about 224,566 (258)

State-of-the-art in aerodynamic shape optimisation methods [PDF]

open access: yes, 2018
Aerodynamic optimisation has become an indispensable component for any aerodynamic design over the past 60 years, with applications to aircraft, cars, trains, bridges, wind turbines, internal pipe flows, and cavities, among others, and is thus relevant ...
Skinner, S.N., Zare-Behtash, H.
core   +1 more source

Efficient Aerodynamic Shape Optimization [PDF]

open access: yes10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2004
Since the present author first became involved in computational fluid dynamics, around 1970, the landscape has changed dramatically. At that time, panel methods had just come into use, and the world’s fastest super computer, the Control data 6600, had only 131000 words of memory (about 1 megabyte).
openaire   +1 more source

Efficient multi-objective shape optimization using proper orthogonal decomposition with variable fidelity concept

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
A variable fidelity concept is introduced in a re-parameterization approach based on the proper orthogonal decomposition (POD) to efficiently solve multi-objective aerodynamic shape optimization problems.
Wataru YAMAZAKI
doaj   +1 more source

Shape Optimization of an Asymmetric Airfoil for Low Wind Speed Region having Adjoint-Based Optimization Technique [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
The land needed to install wind turbines is shrinking as power generation from renewable energy sources increases significantly. A large number of studies are being conducted to maximize the power extraction from wind turbines in areas with low wind ...
P. Shinde, S. S. Ohol, V. Tripathi
doaj   +1 more source

An aerothermodynamic design optimization framework for hypersonic vehicles [PDF]

open access: yes, 2018
In the aviation field great interest is growing in passengers transportation at hypersonic speed. This requires, however, careful study of the enabling technologies necessary for the optimal design of hypersonic vehicles.
Di Giorgio, Simone   +3 more
core   +1 more source

Rapid aerodynamic shape optimization under uncertainty using a stochastic gradient approach

open access: yesStructural And Multidisciplinary Optimization, 2022
A common approach in aerodynamic design is to optimize a performance function—provided some constraints—defined by a choice of an aerodynamic model at nominal operating conditions.
L. Jofre, A. Doostan
semanticscholar   +1 more source

Simultaneous pseudo‐time stepping for aerodynamic shape optimization [PDF]

open access: yesPAMM, 2005
AbstractIn this paper we discuss about numerical methods for aerodynamic shape optimization problems. These problems require efficient CFD techniques to solve the state (as well as costate) equations and fast algorithms for solving the optimization problems. Both of these are independent active areas of research since long time.
Hazra, Subhendu, Gauger, Nicolas
openaire   +2 more sources

A CFD-informed quasi-steady model of flapping-wing aerodynamics [PDF]

open access: yes, 2015
Aerodynamic performance and agility during flapping flight are determined by the combination of wing shape and kinematics. The degree of morphological and kinematic optimization is unknown and depends upon a large parameter space.
Bomphrey, R J, Liu, H, Nakata, T
core   +3 more sources

Aerodynamic shape optimization of a low drag fairing for small livestock trailers [PDF]

open access: yes, 2008
Small livestock trailers are commonly used to transport animals from farms to market within the United Kingdom. Due to the bluff nature of these vehicles there is great potential for reducing drag with a simple add-on fairing.
Foxley, N.A.   +5 more
core   +1 more source

Data-driven aerodynamic shape design with distributionally robust optimization approaches [PDF]

open access: yesComputer Methods in Applied Mechanics and Engineering, 2023
We formulate and solve data-driven aerodynamic shape design problems with distributionally robust optimization (DRO) approaches. Building on the findings of the work \cite{gotoh2018robust}, we study the connections between a class of DRO and the Taguchi ...
Long Chen   +4 more
semanticscholar   +1 more source

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