Articles with "double diffusion" as a keyword



Diffusion tensor subspace imaging of double diffusion–encoded MRI delineates small fibers and gray‐matter microstructure not visible with single encoding techniques

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Published in 2025 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.30463

Abstract: Double diffusion encoding (DDE) acquisition strategies promise specificity for small‐dimensional structures inaccessible to single diffusion encoding (SDE). For DDE‐weighted MRI scans to become relevant for whole brain imaging, signal reconstruction frameworks must accurately report microstructural… read more here.

Keywords: subspace imaging; tensor subspace; diffusion tensor; double diffusion ... See more keywords

Effects of g-jitter and radiation on three-dimensional double diffusion stagnation point nanofluid flow

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Published in 2020 at "Applied Mathematics and Mechanics"

DOI: 10.1007/s10483-020-2666-6

Abstract: The unsteady double diffusion of the boundary layer with the nanofluid flow near a three-dimensional (3D) stagnation point body is studied under a microgravity environment. The effects of g-jitter and thermal radiation exist under the… read more here.

Keywords: double diffusion; stagnation; stagnation point; nanofluid flow ... See more keywords

Investigation of double diffusion Cattaneo-Christov model in mixed convection flow by variable thickness surface

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Published in 2017 at "Results in physics"

DOI: 10.1016/j.rinp.2017.10.003

Abstract: Abstract This investigation examines the characteristics of nonlinear mixed convection flow by stretching sheet with variable thickness. Double diffusion Cattaneo-Christov heat flux model is implemented. Temperature dependent thermal conductivity is employed. Flow of Maxwell fluid… read more here.

Keywords: double diffusion; flow; variable thickness; diffusion cattaneo ... See more keywords

Chemical reaction and heat generation/absorption aspects in flow of Walters-B nanofluid with Cattaneo-Christov double-diffusion

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Published in 2017 at "Results in physics"

DOI: 10.1016/j.rinp.2017.10.036

Abstract: Abstract Main objective of present article is to investigate the Cattaneo-Christov double-diffusion theory for the flow of Walters-B nanofluid over an impermeable stretching surface. Cattaneo-Christov double-diffusion definitions are utilized in the energy and concentration expressions.… read more here.

Keywords: double diffusion; diffusion; cattaneo christov; christov double ... See more keywords

The effect of double diffusion on entrainment in turbulent plumes

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Published in 2019 at "Journal of Fluid Mechanics"

DOI: 10.1017/jfm.2019.925

Abstract: We investigate experimentally the effect of double diffusion in the salt-fingering configuration on entrainment in turbulent plumes. Plumes over a range of source buoyancy fluxes $B_{0}$ and source density ratios $R_{\unicode[STIX]{x1D70C}}$ are examined. When the… read more here.

Keywords: double diffusion; diffusion; effect double; entrainment turbulent ... See more keywords

Diffusive-convection staircases in the polar oceans: the interplay between double diffusion and turbulence

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Published in 2024 at "Journal of Fluid Mechanics"

DOI: 10.1017/jfm.2024.224

Abstract: Abstract Numerical simulations have been conducted to examine the structure of diffusive-convection staircases in the presence of vortical-mode-induced turbulent forcing. By modulating the input power $P$ and the background density ratio $R_\rho$, we have identified… read more here.

Keywords: convection staircases; double diffusion; diffusive convection; turbulence ... See more keywords
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Double diffusion for the programmable spatiotemporal patterning of multi-domain supramolecular gels

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Published in 2021 at "Chemical Science"

DOI: 10.1039/d1sc03155d

Abstract: To achieve spatial resolution of a multi-component gel, a double diffusion approach is used which enables the precise programming of self-assembled patterned domains with well-defined shapes and sizes. The low-molecular-weight gelators (LMWGs) used in this… read more here.

Keywords: dbs co2h; double diffusion; dbs; diffusion programmable ... See more keywords
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Numerical simulation on double diffusion natural convection of a power-law nanofluid within double wavy cavity

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Published in 2021 at "Physics of Fluids"

DOI: 10.1063/5.0057309

Abstract: In the present paper, the effect of double diffusion natural convection fluid flow inside the double wavy enclosure using the mesh-free method is investigated. The enclosure is filled with nanofluid whose base fluid is non-Newtonian.… read more here.

Keywords: double diffusion; diffusion natural; natural convection; power ... See more keywords

Analysis of double-diffusion convection on three-dimensional MHD stagnation point flow of a tangent hyperbolic Casson nanofluid

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Published in 2020 at "International journal of ambient energy"

DOI: 10.1080/01430750.2020.1722964

Abstract: AbstractIn this paper, we present a numerical study of three-dimensional tangent hyperbolic Casson-nanofluid flow past a horizontally stretched surface with a magnetic field and double-diffusion co... read more here.

Keywords: three dimensional; double diffusion; hyperbolic casson; tangent hyperbolic ... See more keywords

On stochastic resonance in a model of double diffusion

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Published in 2018 at "Materials Science and Technology"

DOI: 10.1080/02670836.2018.1507697

Abstract: ABSTRACT The double diffusion model was proposed in the late 1970s and extended in 1980s and 1990s by Aifantis and co-workers. It is a continuum model that assumes two local non-equilibrium concentration fields abiding separate… read more here.

Keywords: double diffusion; diffusion; stochastic resonance; resonance model ... See more keywords

Incompressible smoothed particle hydrodynamics solutions of double diffusion of nanoparticle-enhanced phase change materials in vertical mounted circular cylinders

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Published in 2024 at "Numerical Heat Transfer, Part B: Fundamentals"

DOI: 10.1080/10407790.2024.2310063

Abstract: Abstract The scheme of incompressible smoothed particle hydrodynamics (ISPH) method is developed to solve the time-conformable systems that control the double diffusion of nanoparticle-enhanced phase change materials (NEPCM) inside two circular cylinders saturated by a… read more here.

Keywords: hydrodynamics; time; circular cylinders; double diffusion ... See more keywords