• Corpus ID: 195766776

# Statistical properties of thermally expandable particles in soft Rayleigh-Benard convection

@article{Alards2019StatisticalPO,
title={Statistical properties of thermally expandable particles in soft Rayleigh-Benard convection},
author={Kim M. J. Alards and Rudie P. J. Kunnen and Herman J. H. Clercx and Federico Toschi},
journal={arXiv: Soft Condensed Matter},
year={2019}
}
• Published 22 June 2019
• Physics
• arXiv: Soft Condensed Matter
The dynamics of inertial particles in Rayleigh-Benard convection, where both particles and fluid exhibit thermal expansion, is studied using direct numerical simulations (DNS). We consider the effect of particles with a thermal expansion coefficient larger than that of the fluid, causing particles to become lighter than the fluid near the hot bottom plate and heavier than the fluid near the cold top plate. Because of the opposite directions of the net Archimedes' force on particles and fluid…
1 Citations

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## References

SHOWING 1-10 OF 35 REFERENCES
Effects of particle settling on Rayleigh-Bénard convection.
• Physics
Physical review. E, Statistical, nonlinear, and soft matter physics
• 2013
A rather unexpected result is an unusual kind of reverse one-way coupling, in the sense that the fluid is found to be strongly influenced by the particles, while the particles themselves appear to be little affected by the fluid, despite the relative smallness of the Stokes numbers.
Effect of particle injection on heat transfer in rotating Rayleigh-Bénard convection
• Physics
• 2016
The present study attempts to change the regime transitions and heat transfer properties in rotating Rayleigh-Benard convection by injecting 100 µm diameter particles in the flow. The particles start
Dispersion and temperature statistics of inertial particles in isotropic turbulence
• Physics
• 2010
The dispersion and temperature distribution of inertial particles are important in many turbulent, multiphase flow problems. In order to understand these better, direct numerical simulations (DNSs)
Numerical experiments on strongly turbulent thermal convection in a slender cylindrical cell
• Physics
Journal of Fluid Mechanics
• 2003
Numerical experiments are conducted to study high-Rayleigh-number convective turbulence ($Ra$ ranging from $2\times 10^6$ up to $2\times 10^{11}$) in a $\Gamma=1/2$ aspect-ratio cylindrical cell
Turbulence modification and heat transfer enhancement by inertial particles in turbulent channel flow
• Physics
• 2011
We present results of direct numerical simulation of turbulence modification and heat transfer in turbulent particle-laden channel flow and show an enhancement of the heat transfer and a small