Results 71 to 80 of about 5,264 (176)

Performance Analysis of Little Penguin Wing for the Application in Microair Vehicles: A Numerical and Experimental Approach

International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Aerodynamic performance analysis of a little penguin wing and penguin‐inspired wing is numerically conducted at a chord‐based Reynolds number Re = 105 to assess its feasibility for use in microair vehicles (MAVs). The results strongly suggest that penguin‐inspired wing shape performs in a superior manner at higher angles of attack (AOAs) in comparison ...
Mahadi Hasan Masud, Abu Kaisar Md Faisal, Md Mahbub Alam, Peter Dabnichki, Mustafa Zeybek   +4 more
wiley   +1 more source

IGA-based Multi-Index Stochastic Collocation for random PDEs on arbitrary domains

, 2019
This paper proposes an extension of the Multi-Index Stochastic Collocation (MISC) method for forward uncertainty quantification (UQ) problems in computational domains of shape other than a square or cube, by exploiting isogeometric analysis (IGA ...
Beck, Joakim, Tamellini, Lorenzo, Tempone, Raúl   +2 more
core   +1 more source

Constant‐Ratio Blended Models of Curves and Surfaces in Euclidean 3‐Space

Journal of Mathematics, Volume 2025, Issue 1, 2025.
We consider a simple blending method for parametric curves and surfaces. The described blending method offers a systematic approach to creating smooth transitions between parametric curves and surfaces while maintaining Cn‐continuity. It utilizes the parametrizations of the original objects to achieve predictable variations in shape and enables the ...
B. Bulca Sokur, Mohammad W. Alomari
wiley   +1 more source

Comparative Study on the Interest in Non-Uniform Rational B-Splines Representation versus Polynomial Surface Description in a Freeform Three-Mirror Anastigmat

Photonics
Novel freeform optical design methods can be classified in two categories, depending on whether they focus on the generation of a starting point or the development of new optimization tools.
Clément Freslier, Guillaume Druart, Alice Fontbonne, Thierry Lépine, Christophe Buisset, Tibor Agocs, Arnaud Heliere, Fanny Keller, Jean-Baptiste Volatier, Stéphane Beaussier, Paul Jougla   +10 more
doaj   +1 more source

Template mapping method for plane quadrilateral mesh generation with controllable density transitions

Engineering Reports, Volume 6, Issue 12, December 2024.
In this work, we have combined the template method with the mapping method to innovate a four‐step mesh generation method for planar geometric models. This method enables the rapid generation of high‐quality, density‐controllable quadrilateral meshes.
Yize Li, Qingyuan Hu, Gengdong Cheng
wiley   +1 more source

Numerical Analysis of the Cylindrical Shell Pipe with Preformed Holes Subjected to a Compressive Load Using Non-Uniform Rational B-Splines and T-Splines for an Isogeometric Analysis Approach

Axioms
In this paper, we implement the finite detail technique primarily based on T-Splines for approximating solutions to the linear elasticity equations in the connected and bounded Lipschitz domain.
Said EL Fakkoussi, Ouadie Koubaiti, Ahmed Elkhalfi, Sorin Vlase, Marin Marin   +4 more
doaj   +1 more source

Parameterized Modeling of Blended Wing Body Aircraft Based on Multi-Scale CST Method [PDF]

Hangkong bingqi
In the parameterized modeling of blended wing body aircraft, the commonly used CST method has weak local deformation control capability, while the Non-Uniform Rational B-Splines(NURBS)method has the problem of too many global parameters.
Wang Kangjun, Wang Wenkai, Zheng Xiaolin
doaj   +1 more source

Numerical simulation of individualized flow diversion cerebral aneurysms treatment

Proceedings in Applied Mathematics and Mechanics, Volume 24, Issue 4, December 2024.
Abstract Flow diverter implantation has emerged as a highly effective treatment for cerebral aneurysms. However, the variability in patient‐specific vascular anatomy necessitates detailed pre‐operative planning to mitigate potential complications arising from standard, one‐size‐fits‐all devices. To address these challenges, robust predictive simulation
Huy Quang Do, Resam Makvandi, Andreas Ding, Daniel Juhre   +3 more
wiley   +1 more source

Isogeometric analysis for the multigroup neutron diffusion equation with applications in reactor physics

, 2016
Isogeometric Analysis (IGA) has been applied to heterogeneous reactor physics problems using the multigroup neutron dif- fusion equation. IGA uses a computer-aided design (CAD) description of the geometry commonly built from Non-Uniform Rational B ...
Eaton, M, Kophazi, J, Owens, A, Welch, J
core   +2 more sources

The continuous adjoint method to the γ−R˜eθt$$ \gamma -\tilde{R}{e}_{\theta t} $$ transition model coupled with the Spalart–Allmaras model for compressible flows

International Journal for Numerical Methods in Fluids, Volume 96, Issue 11, Page 1715-1740, November 2024.
The continuous adjoint method for transitional flows of compressible fluids was developed and assessed in aerodynamic shape optimization problems, based on three variants of the γ−R˜eθt$$ \gamma -\tilde{R}{e}_{\theta t} $$ transition model. The differentiation of the transition model ensures the accurate computation of the sensitivity derivatives when ...
Marina G. Kontou, Xenofon S. Trompoukis, Varvara G. Asouti, Kyriakos C. Giannakoglou   +3 more
wiley   +1 more source