Articles with "surface density" as a keyword



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Investigation of pressure and the Lewis number effects in the context of algebraic flame surface density closure for LES of premixed turbulent combustion

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Published in 2020 at "Theoretical and Computational Fluid Dynamics"

DOI: 10.1007/s00162-020-00543-x

Abstract: Large scale industrial combustion devices, for example, internal combustion engines, gas turbine combustors, etc., operate under high-pressure conditions and utilize a variety of fuels. Unfortunately, the majority of the current numerical combustion modelling approaches are… read more here.

Keywords: lewis number; combustion; flame surface; surface density ... See more keywords
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Heterogeneous photo-Fenton process mediated by Sn-substituted goethites with altered OH-surface density

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Published in 2019 at "Journal of Photochemistry and Photobiology A: Chemistry"

DOI: 10.1016/j.jphotochem.2019.111856

Abstract: Abstract Heterogeneous photo-Fenton process using several pure- and Sn-incorporated goethites was investigated for the decolourisation of methyl orange (MO). The used goethites presented a partial Sn(IV)-for-Fe(III) substitution. Among other properties variations, this partial replacement provoked… read more here.

Keywords: surface density; heterogeneous photo; photo fenton; fenton process ... See more keywords
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Displacement speed, flame surface density and burning rate in highly turbulent premixed flames characterized by low Lewis numbers

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Published in 2023 at "Journal of Fluid Mechanics"

DOI: 10.1017/jfm.2023.257

Abstract: Abstract Direct numerical simulation data obtained from four pairs of turbulent, lean hydrogen–air, complex-chemistry flames are analysed to explore the influence of molecular diffusion on flame surface density, displacement speed $S_d$ and the flame surface… read more here.

Keywords: flame surface; flame; rate; surface density ... See more keywords
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Formamidine-Based Thiuram Disulfides as Efficient Inhibitors of Acid Corrosion of Mild Steel: Electrochemical, Surface, and Density Functional Theory/Monte Carlo Simulation Studies

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Published in 2022 at "ACS Omega"

DOI: 10.1021/acsomega.2c00985

Abstract: Electrochemical, surface, and density functional theory (DFT)/Monte Carlo (MC) simulation studies were used in investigating the characteristics of N,N′-(disulfanne-1,2-dicarbonothioyl)bis(N,N′-bis(2,6-dimethylphenyl)formimidamide) (DS1), N,N′-(disulfanne-1,2-dicarbonothioyl)bis(N,N′-bis(2,6-diisopropylphenyl)formimidamide) (DS2), N,N′-(disulfanne-1,2-dicarbonothioyl)bis(N,N′-dimesitylformimidamide) (DS3), and N,N′-(disulfanne-1,2-dicarbonothioyl)bis(N,N′-bis(2,6-dichlorophenyl)formimidamide) (DS4) as inhibitors of acid corrosion of mild steel.… read more here.

Keywords: functional theory; bis; steel; surface density ... See more keywords
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Surface Density Function Evolution in Spherically Expanding Flames in Globally Stoichiometric Droplet-laden Mixtures

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Published in 2019 at "Combustion Science and Technology"

DOI: 10.1080/00102202.2019.1678373

Abstract: The statistical behaviors of the magnitude of the reaction progress variable gradient (alternatively known as the Surface Density Function (SDF)) and the strain rates, which affect the SDF evolutio... read more here.

Keywords: surface density; density function; function evolution; evolution spherically ... See more keywords
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Environmental variation of the low-mass IMF.

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Published in 2022 at "Monthly notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stac2642

Abstract: We use a series of magnetohydrodynamic simulations including both radiative and protostellar outflow feedback to study environmental variation of the initial mass function (IMF). The simulations represent a carefully-controlled experiment whereby we keep all dimensionless… read more here.

Keywords: variation low; imf; variation; environmental variation ... See more keywords
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Inner edges of planetesimal belts: collisionally eroded or truncated?

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1221

Abstract: The radial structure of debris discs can encode important information about their dynamical and collisional history. In this paper we present a 3-phase analytical model to analyse the collisional evolution of solids in debris discs,… read more here.

Keywords: maximum planetesimal; debris discs; inner; surface density ... See more keywords
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A test of invariance of dark matter halo surface density using multiwavelength mock galaxy catalogues

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1427

Abstract: A large number of observations have shown that the dark matter halo surface density, given by the product of halo core radius and core density is nearly constant for a diverse suite of galaxies. Although… read more here.

Keywords: density; halo surface; dark matter; halo ... See more keywords
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A statistical analysis of the structure of the interstellar medium in the disc of the milky way

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1450

Abstract: We construct Convolutional Neural Networks (CNNs) trained on exponentiated fractional Brownian motion (xfBm) images, and use these CNNs to analyse Hi-GAL images of surface-density in the Galactic Plane. The CNNs estimate the Hurst parameter, ${\cal… read more here.

Keywords: density; structure; statistical analysis; surface density ... See more keywords
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Origin of the galaxy H i size–mass relation

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Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz2513

Abstract: We analytically derive the observed size–mass relation of galaxies’ atomic hydrogen (H i), including limits on its scatter, based on simple assumptions about the structure of H i discs. We trial three generic profiles for H i surface density as… read more here.

Keywords: size mass; surface density; mass; mass relation ... See more keywords
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Efficacy of early stellar feedback in low gas surface density environments

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Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz3078

Abstract: We present a suite of high-resolution radiation hydrodynamic simulations of a small patch (1 kpc2) of the interstellar medium (ISM) performed with arepo-rt, with the aim to quantify the efficacy of various feedback processes like supernova… read more here.

Keywords: low gas; gas surface; feedback; gas ... See more keywords