Results 41 to 50 of about 21,879 (220)
Transonic Buffet Suppression by Airfoil Optimization
AerospaceThe main buffet suppression techniques of aircrafts include active and passive flow control, aiming to reduce the impact of the fluctuating loads on the airfoil. These techniques are remedies after the airfoil design. The buffet suppression is not always
Yiming Gong +2 more
doaj +1 more source
Aerodynamic optimization of NACA 0012 airfoils with attached Gurney flap in the rarefied gas flow
AIP Advances, 2023 The aerodynamic optimization of a Gurney flap attached to the NACA 0012 airfoil in rarefied gas flow is studied in this study. In order to investigate the effects of Gurney flap geometry (height, mounting angle, and mounting location) and angle of attack
Keren Lin +4 more
doaj +1 more source
Understanding and Comparing Scalable Gaussian Process Regression for Big Data
, 2018 As a non-parametric Bayesian model which produces informative predictive distribution, Gaussian process (GP) has been widely used in various fields, like regression, classification and optimization.
Cai, Jianfei +3 more
core +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A bilayer protection approach is proposed for slowing down the surface potential decay of thin films of spontaneously‐polarized electret materials. The electret and the protective films are characterized, and the protection effectiveness is investigated under the effects of light illumination, water contact and mechanical impact.
Seyedali Sabzpoushan +2 more
wiley +1 more source
Optimal airfoil’s shapes by high fidelity CFD [PDF]
Aircraft Engineering and Aerospace Technology, 2018 Purpose There is an increasing interest in airfoils that modify their shape to adapt at the flow conditions. As an example of application, the authors search the optimal 4-digit NACA airfoil that maximizes the lift-over-drag ratio for a constant lift coefficient of 0.6, from Re = 104 to 3 × 106.
Viola, Ignazio Maria +3 more
openaire +5 more sources
Energy Science &Engineering, EarlyView.Passing vehicles generate short‐duration wakes that can be redirected toward a vertical‐axis turbine. The interaction between wake structure, blade count, and rotational speed governs transient torque production. Low‐solidity configurations combined with tuned rotational speed enhance energy extraction under vehicle‐induced gusts.
Aydin Ulus, Stefan Ilie Moldovan
wiley +1 more source
FlexTech, EarlyView.Active stiffness modulation is achieved in NiTi shape memory alloy‐reinforced PDMS and carbon fiber‐epoxy composites, with reversible 3‐fold modulus increase via Joule heating and validated predictive models, which resolves longstanding adaptive design challenges.
Xi Yi, Dongjie Jiang
wiley +1 more source
Influence of parameterization method and optimization algorithm on airfoil optimization
Journal of Physics: Conference Series, 2023 Abstract In this study, the impact of parameterization methods and optimization algorithms on the optimization results of the RAE2822 airfoil is examined. Specifically, how variations in the number of design variables, spacing of control points, the scaling scale of the objective function, and line search step of different FFD ...
Jinxin Zhou +9 more
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Macromolecular Symposia, EarlyView.ABSTRACT This paper presents theoretical aspects and experimental tests for the design and optimization of a novel ducted fan propulsion system, complemented by multi‐element wings inspired by Handley Page and the aerodynamic Channel Wing concept.
Adrian Niță +4 more
wiley +1 more source
Actuation Strategies for Underwater Jet‐Propelled Soft Robots
Journal of Field Robotics, EarlyView.ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone +3 more
wiley +1 more source