Results 51 to 60 of about 10,643 (314)

Developing Micro/Nanostructured Fluidic Mixing Technology for Biomedical Applications

open access: yesAdvanced Science, EarlyView.
This review critically evaluates how micro/nanostructured mixing technologies are redefining biomedical research. By synergizing fundamental analysis, numerical modeling, structural design, and external field manipulation, these systems attain unprecedented control over mass transport.
Junkai Wang   +3 more
wiley   +1 more source

TURB-3D: CFD model for open channels turbulent flow with secondary motion and anisotropic turbulent viscosity

open access: yesWater Science
This paper presents the development and application of TURB-3D, a Galerkin finite element – based computational fluid dynamics (CFD) model for simulating turbulent flows in open channels.
Youssef I. Hafez
doaj   +1 more source

A numerical study of laterally strained wall-bounded turbulence

open access: yes, 2009
Direct numerical simulation (DNS) is used to study the effects of mean lateral divergence and convergence on wall-bounded turbulence, by applying uniform irrotational temporal deformations to a plane-channel domain.
Coleman, G.N.   +3 more
core   +1 more source

Assessment of Turbulence Modelling in the Wake of an Actuator Disk with a Decaying Turbulence Inflow

open access: yesApplied Sciences, 2018
The characteristics of the turbulence field in the wake produced by a wind turbine model are studied. To this aim, a methodology is developed and applied to replicate wake measurements obtained in a decaying homogeneous turbulence inflow produced by a ...
Hugo Olivares-Espinosa   +5 more
doaj   +1 more source

Apparent roughness coefficient in overbank flows

open access: yesSN Applied Sciences, 2021
Overbank flows occur in alluvial valleys during flood events when the conveyance of main channel of rivers is exceeded. Once floodplains are inundated and the so-called compound channel flow is observed, the faster flow in the main channel interacts with
João N. Fernandes
doaj   +1 more source

A Compressible Turbulence Model for Pressure—Strain

open access: yesFluids, 2022
This work focuses on the performance and validation of compressible turbulence models for the pressure-strain correlation. Considering the Launder Reece and Rodi (LRR) incompressible model for the pressure-strain correlation, Adumitroaie et al., Huang et
Hechmi Khlifi, Adnen Bourehla
doaj   +1 more source

Performance of various SST models in predicting typical separated flows

open access: yesKongqi donglixue xuebao
The phenomenon of flow separation critically influences the flow field structure near aircraft surfaces and their overall performance. This study evaluated the predictive performance of the widely used shear-stress transport (SST) turbulence model and ...
Wenhao Li   +5 more
doaj   +1 more source

Effect of Prandtl's ration on balance in geophysical turbulence

open access: yes, 2015
Support for this research has come from the UK Engineering and Physical Sciences Research Council (grant no. EP/H001794/1).The fluid dynamics of the atmosphere and oceans are to a large extent controlled by the slow evolution of a scalar field called ...
McKiver, William Joseph   +1 more
core   +1 more source

Complexity Analysis of Bubble Plumes in Power Law Fluids Based on Chaos Theory

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In order to reveal the complexity of the internal flow of bubble plume in power law fluid, the flow characteristics and chaotic characteristics of plume are studied by experiment and theory. The chaotic characteristic parameters (correlation dimension D, K entropy, and Lyapunov exponent λ) of gas velocity under different superficial gas ...
Xin Dong   +6 more
wiley   +1 more source

A Numerical Approach to Analyzing Shallow Flows over Rough Surfaces

open access: yesFluids
The hydraulic characteristics (such as velocity profiles, near-bed velocity profile, bed shear stress, and resistance coefficients) of shallow flows over rough surfaces were investigated using numerical simulations.
M. Nasimul Chowdhury   +2 more
doaj   +1 more source

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