Results 41 to 50 of about 1,741 (182)

Aerodynamic Characteristics Optimization Design of the HALE Joined‐Wing Configuration UAV

International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
This study investigates the factors influencing the aerodynamic performance enhancement of the rear wing of the joined‐wing configuration UAVs by analyzing the flow field structure and flow mechanisms before and after airfoil optimization. Correspondingly, an optimization design concept tailored to joined‐wing aircraft is proposed. Focusing on the rear
Junlei Sun, Zhou Zhou, TserendondogTengis, Jian Zhang, Rongchun Zhang   +4 more
wiley   +1 more source

Automatic Generation of T-Splines with Extraordinary Points Based on Domain Decomposition of Quadrilateral Patches

Mathematics
Isogeometric analysis (IGA) is a numerical methodology for solving differential equations by employing basis functions that preserve the exact geometry of the domain. This approach is based on a class of mathematical functions known as NURBS (Non-Uniform
João Carlos L. Peixoto, Rafael L. Rangel, Luiz Fernando Martha   +2 more
doaj   +1 more source

Scanning Path Planning of the Robot for Breast Ultrasound Examination Based on Binocular Vision and NURBS

IEEE Access, 2022
Ultrasonic scanning is the most commonly used method for detecting breast cancer. Traditional breast ultrasound mainly relies on manual examination, which requires doctors with rich clinical experience.
Xinran Zhang, Yongde Zhang, Haiyan Du, Mingyue Lu, Zixi Zhao, Yanhua Zhang, Sihao Zuo   +6 more
doaj   +1 more source

Proposal of a Parameterized Methodology for the Hydrodynamic Design of High‐Efficiency Pelton Rotors Validated by Multiphase CFD Simulations

International Journal of Rotating Machinery, Volume 2026, Issue 1, 2026.
This work presents and validates a direct analytical methodology for the parametric hydrodynamic design of Pelton rotors. The proposed approach combines a one‐dimensional theoretical framework for defining global geometric rotor parameters with an inductive method for generating bucket geometry, formalized from a comprehensive mapping of a high ...
Daniel O. Silva, Ramiro Gustavo Ramirez Camacho, Celso Antonio B. Sales Junior, Angie Lizeth Espinosa Sarmiento, Pramita Mishra   +4 more
wiley   +1 more source

Transient analysis of laminated composite plates using NURBS-based isogeometric analysis

Vietnam Journal of Mechanics, 2014
We further study isogeometric approach for response analysis of laminated composite plates using the higher-order shear deformation theory. The present theory is derived from the classical plate theory (CPT) and the shear stress free surface conditions ...
Lieu B. Nguyen, Chien H. Thai, Ngon T. Dang, H. Nguyen-Xuan   +3 more
doaj   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

The Anatomical Record, Volume 308, Issue 11, Page 2962-2975, November 2025.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido, Shane Tucker, Stephan Lautenschlager   +2 more
wiley   +1 more source

Domain‐adaptive self‐supervised learning for corrosion detection and 3D building information model mapping in steel tunnels

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 26, Page 4425-4447, 7 November 2025.
Abstract Accurate detection and localization of steel corrosion in tunnel infrastructure remains a major challenge, particularly under conditions of variable lighting, limited accessibility, and visual domain shifts common in real‐world inspection scenarios.
Shreejan Maharjan, Shogo Inadomi, Kenta Itakura, Pang‐jo Chun   +3 more
wiley   +1 more source

The crucial role of meshing in computational fluid dynamics simulations for organic geometries in paleobiology: Describing fluid dynamics performance through best practices

Methods in Ecology and Evolution, Volume 16, Issue 10, Page 2170-2194, October 2025.
Abstract Computational fluid dynamics (CFD) has become an essential tool for studying fluid interactions in biological systems. While widely used in engineering, its application in the natural sciences, particularly in paleobiology, remains limited due to the challenges of meshing complex organic geometries.
Matheo López‐Pachón, Jordi Marcé‐Nogué   +1 more
wiley   +1 more source

Optimization-Driven Reconstruction of 3D Space Curves from Two Views Using NURBS

Mathematics
In the realm of 3D curve reconstruction, Non-Uniform Rational B-Splines (NURBSs) offer a versatile mathematical tool due to their ability to precisely represent complex geometries.
Musrrat Ali, Deepika Saini, Sanoj Kumar, Abdul Rahaman Wahab Sait   +3 more
doaj   +1 more source

Multi‐Physically Programmable Tubular Origami Metamaterials: Exploitable Nexus of Geometry, Folding Mechanics and Stimuli‐Responsive Physics

Advanced Science, Volume 12, Issue 36, September 25, 2025.
This article presents an insightful review on the exploitable nexus of geometry, folding mechanics and stimuli‐responsive physics for achieving active programmability in tubular origami metamaterials and metastructures, highlighting the broad‐spectrum potential in innovative applications across the length scales, along with critically analysing the ...
A. Sharma, S. Naskar, T. Mukhopadhyay
wiley   +1 more source