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Beating the heat in the living wings of butterflies（图）
Beating heat living wings butterflies
2020/2/20
A new study by Columbia and Harvard scientists has identified the physiological importance of temperatures for butterfly wings to function properly. Contrary to the common belief that butter...
Department of Nuclear Science and Engineering spreads its wings
Nuclear science engineeringSchool of EngineeringClasses programsEducation teaching academicsDesignEnergyEnvironmentNuclear power reactorsPhysics
2019/9/20
After a nearly five-year effort, fueled by the passionate persistence of faculty and students, the Department of Nuclear Science and Engineering (NSE) began offering a new degree this fall: 22-ENG, a ...
Many of an organism's traits are influenced by cues from the environment. These features are known as phenotypically plastic traits, and are important in allowing the organism to cope with unpredictab...
Penn Collaboration Produces Surprising Insights Into the White Spots on Butterfly Wings
Penn Collaboration Insights White Spots Butterfly Wings
2017/7/24
A collaboration between biologists and materials scientists at the University of Pennsylvania is yielding new insights into the wings of the “skipper butterfly” in the Costa Rican rainforest. What the...
Comparison of qualitative and quantitative properties of the wings,necks and offal of chicken broilers from organic and conventional production systems
meat quality broiler chemical indicators liver heart gizzard
2016/12/8
The aim of the present study was to investigate qualitative and quantitative properties of wings, offal (liver, heart and gizzard) and necks of chickens from organic and conventional production system...
Studies of Wings Supporting Non-unique Solutions in Transonic Flows
Wings Supporting Non-unique Solutions Transonic Flows
2015/7/6
Non-unique numerical solutions of transonic flows over airfoils have been found, first for potential flow equation, and later for Euler and RANS equations. The studies have also been...
A Computational Framework for Low Reynolds Number 3D Flapping Wings Simulations
Computational Framework Low Reynolds Number 3D Flapping Wings Simulations
2015/7/3
This paper describes the work done in the development of a fast and accurate numerical solver for flows around flapping wings at low Reynolds numbers. In the first part, the fi...
An Assessment of Dual-Time Stepping, Time Spectral and Artificial Compressibility based Numerical Algorithms for Unsteady Flow with Applications to Flapping Wings
Assessment Dual-Time Stepping Time Spectral Compressibility based Numerical Algorithms Unsteady Flow Flapping Wings
2015/7/3
The objective of this study is to compare and contrast three numerical algorithms that can be used to estimate the forces and pressure distribution on wings in flapping motion. All algorithms ar...
Aerodynamic–Structural Design Studies of Low-Sweep Transonic Wings
Aerodynamic–Structural Design Studies Low-Sweep Transonic Wings
2015/7/2
The current generation of wing designs for civilian air transport typically have a swept wing. However, these wings were designed without the aid of modern high-fidelity simulation and multidisc...
Multi-point Aero-Structural Optimization of Wings Including Planform Variations
Multi-point Aero-Structural Optimization Wings Planform Variations
2015/7/2
This paper focuses on wing optimization via control theory using a multi-point design method. Based on the design methodology previously developed for wing section and planform optimization at a speci...
VISCOUS AERODYNAMIC SHAPE OPTIMIZATION OF WINGS INCLUDING PLANFORM VARIABLES
VISCOUS AERODYNAMIC SHAPE OPTIMIZATION WINGS PLANFORM VARIABLES
2015/7/2
During the last decade, aerodynamic shape optimization methods based on control theory have been intensively developed. The methods have proved to be very e ective for improving wing section shapes fo...
Aerodynamic shape and planform optimization of wings using a viscous reduced adjoint gradient formula
Aerodynamic shape planform optimization viscous reduced adjoint gradient formula
2015/7/2
The focus of CFD applications has shifted to aerodynamic design. This shift has been mainly motivated by the availability of high performance computing platforms and by the development of new and eci...
AERODYNAMIC SHAPE OPTIMIZATION OF WINGS INCLUDING PLANFORM VARIATIONS
AERODYNAMIC SHAPE OPTIMIZATION WINGS INCLUDING PLANFORM VARIATIONS
2015/7/2
This paper describes the formulation of optimization techniques based on control theory for aerodynamic shape design in inviscid compressible ow modelled by the Euler equations. The design methodology...
A theoretical method was developed, and experimentally validated, to control the static shape of flexible struc tures by employing internal translational actuators. A finite element model of the struc...
Computational Investigation of Wings with Miniature Trailing Edge Control Surfaces
Miniature Trailing Control Surfaces Wing
2015/6/18
Miniature trailing edge e ectors (MiTEs) are small
aps (typically 1% to 5% chord)
actuated with de
ection angles near 90 degrees. The small size, combined with little
required power and good cont...