Abstract
We investigate the effect of the thermal two-way coupling between the fluid temperature field and point-like particles on the temperature statistics in homogeneous and isotropic steady turbulence by means of direct numerical simulations (DNS). Results show that, on average, particles dissipate the variance of the temperature fluctuations modulating the fluid temperature gradients. The temperature gradient normalized Probability Density Functions (PDF) collapse to a single curve for all Stokes and thermal Stokes numbers. On the other hand, the normalized PDF of the fluid temperature-particle temperature increments, which cause the thermal dissipation, shows a strong dependence on the thermal Stokes number. Inertial particles preferentially cluster in the region of sharp fluid temperature variation and easily cross these thin temperature gradient sheets causing large heat fluxes. The impact of the particle thermal feedback across the scales of the flow is examined through the fluid temperature and particle temperature Eulerian structure functions.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
H.R. Pruppacher, J.D. Klett, Microphysics of Clouds and Precipitation (Springer, Berlin, 2010)
F. De Lillo, M. Cencini, W.M. Durham, M. Barry, R. Stocker, E. Climent, G. Boffetta, Phys. Rev. Lett. 112, 044502 (2014)
F. Zonta, C. Marchioli, A. Soldati, Acta Mech. 195(1–4), 305 (2008)
A. Celani, A. Lanotte, A. Mazzino, M. Vergassola, Phys. Rev. Lett. 84, 2385 (2000)
M.R. Maxey, J. Riley, Phys. Fluids 26(4), 883 (1983)
A.D. Bragg, P.J. Ireland, L.R. Collins, J. Fluid Mech. 780, 327 (2015)
M. Wilkinson, B. Mehlig, Europhys. Lett. 71(2), 186 (2005)
J. Bec, H. Homann, G. Krstulovic, Phys. Rev. Lett. 112, 234503 (2014)
S. Elghobashi, Appl. Sci. Res. 48(3), 301 (1991)
W.W. Grabowski, L. Wang, Ann. Rev. Fluid Mech. 45(1), 293 (2013)
C. Canuto, M.Y. Hussaini, A. Quarteroni, T.A. Zang, Spectral methods in Fluid Mechanics (Springer, Berlin, 1988)
M. Hochbruck, A. Ostermann, Acta Numer. 19, 209 (2010)
M. Carbone, M. Iovieno, W.I.T. Trans, Eng. Sci. 120, 237 (2018)
M.R. Overholt, S.B. Pope, Phys. Fluids 8(11), 3128 (1996)
Acknowledgements
We acknowledge the CINECA award under the ISCRA initiative (project HP10CWVISL), for the availability of high performance computing resources and the computer resources provided by LaPalma Supercomputer at the Instituto de Astrofísica de Canarias through the Red Española de Supercomputación (project FI-2018-1-0044).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this paper
Cite this paper
Carbone, M., Bragg, A.D., Iovieno, M. (2019). Modulation of Fluid Temperature Fluctuations by Inertial Particles in Turbulence. In: Örlü, R., Talamelli, A., Peinke, J., Oberlack, M. (eds) Progress in Turbulence VIII. iTi 2018. Springer Proceedings in Physics, vol 226. Springer, Cham. https://doi.org/10.1007/978-3-030-22196-6_39
Download citation
DOI: https://doi.org/10.1007/978-3-030-22196-6_39
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-22195-9
Online ISBN: 978-3-030-22196-6
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)