Results 41 to 50 of about 3,085,452 (343)

Experimental evaluation of negative skin friction on floating pile in gypseous soil

open access: yesMagazine of Civil Engineering
Gypseous soils are characterized by an open structure with developed porosity and high gypsum content, which determines their metastable state. When saturated with water, a decrease in volume occurs as a result of a decrease in matrix suction and ...
Mohsen Abeer
doaj   +1 more source

Large-Eddy Simulation (LES) on the Square and Triangular Tall Buildings to Measure Drag Force

open access: yesAdvances in Civil Engineering, 2021
The wind load issues play a significant role in designing tall buildings, which has sometimes been considered an even more essential factor than earthquake loads. Also, investigating wind behavior in tall buildings is a crucial issue in architectural and
Abdollah B. Daemei   +3 more
doaj   +1 more source

Wind Forces in Overgrown Rope Façades

open access: yesJournal of Facade Design and Engineering, 2021
Overgrown rope façades offer a space-saving possibility to make cities greener while counteracting the effect of the urban heat island (UHI). Unfortunately, there are no design models that adequately characterise the interaction between wind and plants ...
Kilian Arnold   +2 more
doaj   +1 more source

A comparison of coaxial and conventional rotor performance [PDF]

open access: yes, 2009
The performance of a coaxial rotor in hover, in steady forward flight, and in level, coordinated turns is contrasted with that of an equivalent, conventional rotor with the same overall solidity, number of blades, and blade aerodynamic properties.
Brown, Brown, Kim, Landgrebe, Newman
core   +1 more source

Experimental study on vortex induced vibration of risers with fairing considering wake interference

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2017
Vortex Induced Vibration (VIV) is a typical flow-structure interference phenomenon which causes an unsteady flow pattern due to vortex shedding at or near the structure's natural frequency leading to resonant vibrations.
Min Lou, Wu-gang Wu, Peng Chen
doaj   +1 more source

Application Research on Drag Reduced Conductors for Electric Power Transmission Lines in Strong Wind Areas

open access: yesMATEC Web of Conferences, 2016
The breeze vibration duration of conductors is long, the vibration amplitude is strong and the frequency range is wide for electric power transmission lines in strong wind areas, which seriously affects the safe and stable operation of transmission lines.
Li Dong Qing   +7 more
doaj   +1 more source

Drag reduction in a class 8 truck - scaled down model

open access: yesMATEC Web of Conferences, 2018
Trucks are heavy load vehicles used mainly for commercial transport operations. There are several classes of heavy duty commercial vehicles classified based on the weight loaded.
Vishwa Krishna. R   +3 more
doaj   +1 more source

Simulation of drag reduced conductors based on a new accurate model using finite element method

open access: yesThe Journal of Engineering, 2019
For improving the reliability of power transmission lines, it is urgent to reduce the horizontal load and wind deviation, while replacing with drag reduced conductors can achieve it without changing the original transmission line path.
Peijin Wang   +5 more
doaj   +1 more source

Aerodynamic characteristics of a hypersonic parachute [PDF]

open access: yes, 1961
Newtonian theory, both in the form of the Modified-Newtonian and the Newton- Busemann pressure laws, is used to find the shape, cloth area and drag of the axisymmetric canopy of a hypersonic parachute, whose only load-carrying fibres are longitudinal ...
Boyd, E. A.
core  

Navigating new norms: a systematic review of factors for the development of effective digital tools in higher education

open access: yesFEBS Open Bio, EarlyView.
What factors make for an effective digital learning tool in Higher Education? This systematic review identifies elements of a digital tool that published examples reveal to be features of an engaging and impactful digital tool. A systematic literature search yielded 25 research papers for analysis.
Akmal Arzeman   +4 more
wiley   +1 more source

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