Results 81 to 90 of about 96,065 (304)

A Novel Milli‐Scale Magnetic Robot Exploiting Rotation for Controlled Magnetic Particles Release

open access: yesAdvanced Intelligent Systems, EarlyView.
Delivering magnetic particles can become a game changer in minimally invasive medicine. To cope with this challenge, a magnetically actuated milli‐scale carrier leveraging rotation to perform on‐demand tunable release of magnetic particles across multiple release events is presented.
Giordano De Angelis   +3 more
wiley   +1 more source

Theory of x-ray photon correlation spectroscopy for multiscale flows

open access: yesPhysical Review Research
Complex multiscale flows associated with instabilities and turbulence are commonly induced under high-energy density (HED) conditions, but accurate measurement of their transport properties has been challenging.
Hao Yin   +8 more
doaj   +1 more source

Relations between two-point correlations and pressure strain terms [PDF]

open access: yes
The structure of the two-point spatial correlations (velocity-velocity, velocity-scalar, and scalar-scalar) were studied with a view to improve turbulence closure models.
Lele, Sanjiva K., Wolfshtein, Micha
core   +1 more source

Experimental Investigation of Microbubble Evolution in the Liquivac Multiphase Flow Pump

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This paper aims to experimentally investigate the mechanisms of microbubble characteristics evolution within an axial pump. The findings will aid in assessing the pump performance by identifying the range of bubble sizes and comparing them with the threshold size (< 300 μm). This study also provides evidence supporting the use of such pumps as
Hamad FA   +4 more
wiley   +1 more source

A Two-Time-Scale Turbulence Model and Its Application in Free Shear Flows

open access: yesApplied Sciences
A novel three-equation turbulence model has been proposed as a potential solution to overcome some of the issues related to the k–ε models of turbulence.
Mehmet Zafer Gul   +2 more
doaj   +1 more source

Evaluation of a Buoyancy and Shear Based Mixing Length for a Turbulence Scheme

open access: yesFrontiers in Earth Science, 2017
We present a new diagnostic mixing length for a turbulence scheme based on a prognostic equation for the turbulence kinetic energy. The formulation adds a local vertical wind shear term to the non-local buoyancy-based mixing length currently used in the ...
Quentin Rodier   +3 more
doaj   +1 more source

Turbulent kinetic energy equation and free mixing [PDF]

open access: yes
Calculation of free shear flows was carried out to investigate the usefulness of several concepts which were previously successfully applied to wall flows. The method belongs to the class of differential approaches.
Bradshaw, P., Morel, T., Torda, T. P.
core   +1 more source

Freely-Decaying, Homogeneous Turbulence Generated by Multi-scale Grids

open access: yes, 2011
We investigate wind tunnel turbulence generated by both conventional and multi-scale grids. Measurements were made in a tunnel which has a large test-section, so that possible side wall effects are very small and the length assures that the turbulence ...
Davidson   +5 more
core   +1 more source

From Bench to Bulk: Investigating Kinetics, Recyclability, and Scale‐Up of ZIF‐67

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Zeolitic imidazolate framework‐67 (ZIF‐67), a subclass of metal–organic frameworks (MOFs), has garnered considerable attention due to its high surface area, open crystal structure, tunable porosity, and potential applications in gas separation, catalysis, and carbon capture.
Aaush Bhardwaj Singh   +1 more
wiley   +1 more source

Rossby-wave turbulence in a rapidly rotating sphere [PDF]

open access: yesNonlinear Processes in Geophysics, 2005
We use a quasi-geostrophic numerical model to study the turbulence of rotating flows in a sphere, with realistic Ekman friction and bulk viscous dissipation.
N. Schaeffer, P. Cardin
doaj  

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