Results 1 to 10 of about 938 (50)
Effects of rotor separation on the axial descent performance of dual-rotor configurations
Rotorcraft can encounter highly unsteady flow when descending at a steep angle, leading to a flow condition called vortex ring state, which is associated with strong oscillatory airloads and substantial losses in mean rotor thrust.
Marcel Veismann +2 more
doaj +1 more source
It is demonstrated how aqueous droplets with volumes down to the sub-femtolitre range can be manipulated, including the withdrawal of minute samples from the droplets.
Mostafa Shojaeian, Steffen Hardt
doaj +1 more source
Emergence of in-line swimming patterns in zebrafish pairs
Mathematical models promise new insights into the mechanisms underlying the emergence of collective behaviour in fish. Here, we establish a mathematical model to examine collective behaviour of zebrafish, a popular animal species in preclinical research.
Maurizio Porfiri +3 more
doaj +1 more source
In recent years, observations of the atmospheric surface layer have greatly promoted research on high-Reynolds-number wall-bounded turbulence, especially observations of wind-blown sand flows/sandstorms, which are typical sand-laden two-phase flows ...
Hongyou Liu, Xiaojing Zheng
doaj +1 more source
Time scales of dynamic stall development on a vertical-axis wind turbine blade
Vertical-axis wind turbines are excellent candidates to diversify wind energy technology, but their aerodynamic complexity limits industrial deployment.
Sébastien Le Fouest +2 more
doaj +1 more source
On the thermal effect of porous material in porous media Rayleigh–Bénard convection
We perform a two-dimensional numerical study on the thermal effect of porous media on global heat transport and flow structure in Rayleigh–Bénard (RB) convection, focusing on the role of thermal conductivity $\lambda$ of porous media, which ranges from ...
Jun Zhong, Shuang Liu, Chao Sun
doaj +1 more source
Resolvent analysis of a finite wing in transonic flow
Shock waves interacting with turbulent boundary layers on wings can result first in self-sustained flow unsteadiness and eventually in structural vibration.
Jelle Houtman +2 more
doaj +1 more source
Investigating cohesive sediment dynamics in open waters via grain-resolved simulations
Cohesive particulate flows play an important role in environmental fluid dynamics, as well as in a wide variety of civil and process engineering applications.
Bernhard Vowinckel +3 more
doaj +1 more source
Numerical study of the effect of sidewalls on shock train behaviour
Strongly coupled sequences of shock waves, known as shock trains, are present in high-speed propulsion systems, where the presence of sidewalls substantially modifies the boundary layer thickness, skin friction and streamwise pressure distribution.
Alexander Gillespie, Neil D. Sandham
doaj +1 more source
Ionic fluids subjected to externally applied electric fields experience Joule heating, which increases with the increased electric field and ionic conductivity of the medium. Temperature gradients induced by Joule heating can create buoyancy-driven flows
Mohammad K. D. Manshadi, Ali Beskok
doaj +1 more source

