Back to Search
Start Over
Clustering and energy spectra in two-dimensional dusty gas turbulence
- Source :
- Phys. Rev. E 100, 013114 (2019)
- Publication Year :
- 2019
-
Abstract
- We present Direct Numerical Simulation (DNS) of heavy inertial particles (dust) immersed in two-dimensional turbulent flow (gas). The dust are modeled as mono-dispersed heavy particles capable of modifying the flow through two-way coupling. By varying the Stokes number (St) and the mass-loading parameter $({\phi}_{\rm m})$, we study the clustering phenomenon and the gas phase kinetic energy spectra. We find that the dust-dust correlation dimension $(d_2)$ also depends on ${\phi}_{\rm m}$. In particular, clustering decreases as mass-loading $({\phi}_{\rm m})$, is increased. In the kinetic energy spectra of gas we show: (i) emergence of a new scaling regime, (ii) the scaling exponent in this regime is not unique but rather a function of both St and $({\phi}_{\rm m} )$. Using a scale-by-scale enstrophy budget analysis we show in the new scaling regime, viscous dissipation due to the gas balances back-reaction from the dust.
- Subjects :
- Physics - Fluid Dynamics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. E 100, 013114 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1902.05435
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevE.100.013114