Results 11 to 20 of about 37,239 (284)

Flight of the dragonflies and damselflies [PDF]

, 2016
This work is a synthesis of our current understanding of the mechanics, aerodynamics and visually mediated control of dragonfly and damselfly flight, with the addition of new experimental and computational data in several key areas.
Alexander DE, Alexander DE, Azuma A, Bomphrey RJ, Chadwick LE, Corbet S, Dijkstra K-DB, Ennos AR, Grimaldi D, Hertel H, Huai-Ti Lin, Kesel AB, Liu H, Luttges M, Magnan A, May ML, Neville AC, Newman BG, Newman DJS, Okamoto M, Per Henningsson, Rajabi H, Richard J. Bomphrey, Rudolph R, Rüppell G, Stepniewski WZ, Toshiyuki Nakata, Wakeling JM, Wakeling JM, Wakeling JM   +29 more
core   +2 more sources

Neuro-Fuzzy Network-Based Reduced-Order Modeling of Transonic Aileron Buzz

Aerospace, 2020
In the present work, a reduced-order modeling (ROM) framework based on a recurrent neuro-fuzzy model (NFM) that is serial connected with a multilayer perceptron (MLP) neural network is applied for the computation of transonic aileron buzz.
Rebecca Zahn, Christian Breitsamter
doaj   +1 more source

Directed percolation in aerodynamics: resolving laminar separation bubble on airfoils [PDF]

, 2017
In nature, phase transitions prevail amongst inherently different systems, while frequently showing a universal behavior at their critical point. As a fundamental phenomenon of fluid mechanics, recent studies suggested laminar-turbulent transition ...
Gülker, Gerd, Lind, Pedro G., Peinke, Joachim, Traphan, Dominik, Wester, Tom T. B.   +4 more
core   +3 more sources

Extreme temperature fluctuations in laboratory models of the mid-latitude atmospheric circulation

Scientific Reports, 2023
Using two laboratory-scale conceptual fluid dynamic models of the mid-latitude atmospheric circulation we investigate the statistical properties of pointwise temperature signals obtained in long experiment runs.
Miklós Vincze, Cathrine Hancock, Uwe Harlander, Costanza Rodda, Kevin Speer   +4 more
doaj   +1 more source

Comparison of Experimental and Numerical Transient Drop Deformation during Transition through Orifices in High-Pressure Homogenizers

ChemEngineering, 2021
The droplet deformation in dispersing units of high-pressure homogenizers (HPH) is examined experimentally and numerically. Due to the small size of common homogenizer nozzles, the visual analysis of the transient droplet generation is usually not ...
Benedikt Mutsch, Peter Walzel, Christian J. Kähler   +2 more
doaj   +1 more source

Leading-Edge Vortex Characteristics of Low-Aspect-Ratio Sweptback Plates at Low Reynolds Number

Applied Sciences, 2021
A sweptback angle can directly regulate a leading-edge vortex on various aerodynamic devices as well as on the wings of biological flyers, but the effect of a sweptback angle has not yet been sufficiently investigated.
Jong-Seob Han, Christian Breitsamter
doaj   +1 more source

A Comparison of Isolated and Ducted Fixed-Pitch Propellers under Non-Axial Inflow Conditions

Aerospace, 2020
A strong interest in highly-efficient, small-scale propeller configurations can be recognized, especially due to the currently growing number of and usage possibilities for unmanned aerial vehicles (UAVs).
Michael Cerny, Christian Breitsamter
doaj   +1 more source

Dynamic Structural Scaling Concept for a Delta Wing Wind Tunnel Configuration Using Additive Manufacturing

Aerospace, 2023
Considering aeroelastic effects plays a vital role in the aircraft design process. The construction of elastic wind tunnel models is a critical element in the investigation of occurring aeroelastic phenomena.
Konstantin Bantscheff, Christian Breitsamter   +1 more
doaj   +1 more source

Tabulated Chemistry Combustion Model for Cost-Effective Numerical Simulation of Dual-Fuel Combustion Process

Energies, 2023
This study is dedicated to improving the efficiency of the flamelet-generated manifold (FGM) tabulated chemistry combustion modeling approach for predicting the combustion process in diesel-ignited internal combustion (IC) engines.
Marija Stipic, Branislav Basara, Steffen J. Schmidt, Nikolaus A. Adams   +3 more
doaj   +1 more source

Transonic Buffet Active Control with Local Smart Skin

Actuators, 2022
Transonic flight has high economic benefits, but the appearance of transonic buffet limits the flight envelope. The shock control bump currently used for transonic buffet suppression tends to degrade the aerodynamic performance of the non-buffeting state.
Kai Ren, Chuanqiang Gao, Fangqi Zhou, Weiwei Zhang   +3 more
doaj   +1 more source