Results 51 to 60 of about 12,466 (308)

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility

open access: yesAdvanced Materials, EarlyView.
Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani   +10 more
wiley   +1 more source

Aircraft engine performance and integration in a flying wing aircraft conceptual design [PDF]

open access: yes, 2012
The increasing demand of more economical and environmentally friendly aero engines leads to the proposal of a new concept – geared turbofan. In this thesis, the characteristics of this kind of engine and relevant considerations of integration on a ...
Miao, Zhisong.
core  

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +1 more source

Aerodynamic characteristics of a delta wing aircraft under ground effect

open access: yesFrontiers in Mechanical Engineering
The main objective of this study is to investigate the impact of ground effects on the aerodynamic coefficients of a delta wing aircraft model. Since the flow on the delta wing exhibits vortical flow inherently, it is crucial to examine the influence of ...
Arash Shams Taleghani, Arsalan Ghajar
doaj   +1 more source

Wingtip Vortex Alleviation Using a Reverse Delta Type Add-on Device

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2017
The result of interactions of a wingtip vortex of a half-span wing and vortices generated by a slender reverse delta type add-on device were studied using Particle Image Velocimetry in a closed-loop low-speed wind tunnel.
Afaq Altaf
doaj   +1 more source

Research progress of aerodynamic configuration technology of low sonic boom supersonic aircraft

open access: yesHangkong gongcheng jinzhan, 2023
The aerodynamic configuration of supersonic aircraft has an important effect on the intensity of sonic boom, and the low sonic boom supersonic configuration is the key of the new generation supersonic aircraft, so the aerodynamic configuration of low ...
SU Fengnian   +5 more
doaj   +1 more source

Implicit Large-Eddy Simulations of Wall-Bounded Turbulent Flows. [PDF]

open access: yes, 2007
The paper presents application of Implicit Large Eddy Simulation(ILES)to wall- bounded turbulent flows. A characteristics-based scheme in conjunction with total variation diminishing(TVD)Runge-Kutta time stepping and slope-limiting variants,for the com ...
Malick, Zeshan   +3 more
core  

Phase‐Pure and Size‐Tunable Tin Halide Perovskite Quantum Dots

open access: yesAdvanced Materials, EarlyView.
A trioctylphosphine oxide modulated protocol allows for the synthesis and study of the optical properties of a broad library of tin halide perovskite quantum dots across multiple A‐ and X‐site compositions with precise size tuning while eliminating unwanted 2D phases.
Ole F. Dressler   +7 more
wiley   +1 more source

Impact of a Reverse Delta Type Add-on Device on the Flap-tip Vortex of a Wing

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2016
The effect of interactions of vortices produced by an outboard flap-tip of a half-span wing (NACA 23012 in landing configuration) and a slender reverse delta type add-on device, placed in the proximity of the outboard flap-tip, on the upper surface of ...
Afaq Altaf   +3 more
doaj   +1 more source

Computational fluid dynamic on double delta wing [PDF]

open access: yes, 2015
Basic concept of aircraft wing design is based on airfoil section. Time flies, evolution in aircraft wing design shows the desire of mankind to improve the speed, agility, maneuverability of an aircraft.
Abd. Halim, Khairul Adzha, Mat, Shabudin
core  

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