Disruption of turbulence due to particle loading in a dilute gas–particle suspension

Muramulla, Pradeep; Tyagi, Ankit; Goswami, Partha S.; Kumaran, V.

doi:10.1017/jfm.2020.90

Cited by 27 publications

(41 citation statements)

References 49 publications

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“…It is not clear which effect is more important. Significant suppression of the large-scale vortices was observed in the numerical simulations based on the point-particle model (Vreman 2015;Muramulla et al 2020). Vreman (2015) demonstrated that the non-uniform part of the mean feedback drag force contributed significantly to particle-induced turbulence attenuation.…”

Section: Vortex Structurementioning

confidence: 92%

Modulation of turbulence intensity by heavy finite-size particles in upward channel flow

Xia

Guo

et al. 2021

J. Fluid Mech.

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Section: Vortex Structurementioning

confidence: 92%

Modulation of turbulence intensity by heavy finite-size particles in upward channel flow

Xia

Guo

et al. 2021

J. Fluid Mech.

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“…The fluid flow field is solved using Direct Numerical Simulation (DNS) in a pseudospectral framework. Detail of the numerical scheme, interpolation method for fluid velocity at the particle location, and correction of the velocity field for the calculation of the drag on the particle has been described in detail by our earlier publications Goswami and Kumaran 16 and Muramulla et al 19 .…”

Section: Governing Equations and Simulation Methodologymentioning

confidence: 99%

A Statistical Analysis Towards Modelling the Fluctuating Torque on Particles in Particle-laden Turbulent Shear Flow

Ghosh,

Goswami

2021

Preprint

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“…2017; Kasbaoui 2019; Mathai, Lohse & Sun 2020; Muramulla et al. 2020), to affect the transition to turbulence (Matas, Morris & Guazzelli 2003; Lashgari et al. 2014; Agrawal, Choueiri & Hof 2019) and to alter the development of hydrodynamic structures and their entrainment in cases of settling particles in stratified configurations (Pan, Joseph & Glowinski 2001; Yu, Hsu & Balachandar 2014; Burns & Meiburg 2015; Chou & Shao 2016).…”

Section: Introductionmentioning

confidence: 99%

Inertial effects in dusty Rayleigh–Taylor turbulence

2021

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We investigate the dynamics of a dilute suspension of small, heavy particles superposed on a reservoir of still, pure fluid. The study is performed by means of numerical simulations of the Saffman model for a dilute particle suspension (Saffman, J. Fluid Mech., vol. 13, issue 1, 1962, pp. 120–128). In the presence of gravity forces, the interface between the two phases is unstable and evolves in a turbulent mixing layer which broadens in time. In the case of negligible particle inertia, the particle-laden phase behaves as a denser fluid, and the dynamics of the system recovers to that of the incompressible Rayleigh–Taylor set-up. Conversely, particles with large inertia affect the evolution of turbulent flow, delaying the development of turbulent mixing and breaking the up–down symmetry within the mixing layer. The inertial dynamics also leads to particle clustering, characterised by regions with higher particle density than the initial uniform density, and by the increase of the local Atwood number.

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Disruption of turbulence due to particle loading in a dilute gas–particle suspension

Cited by 27 publications

References 49 publications

Modulation of turbulence intensity by heavy finite-size particles in upward channel flow

Modulation of turbulence intensity by heavy finite-size particles in upward channel flow

A Statistical Analysis Towards Modelling the Fluctuating Torque on Particles in Particle-laden Turbulent Shear Flow

Inertial effects in dusty Rayleigh–Taylor turbulence

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