Flow modification by inertial particles in a differentially heated cubic cavity

Battsetseg Gereltbyamba, Changhoon Lee

Research output: Contribution to journalArticle

Abstract

In this study, we analyzed particle-laden flow in a differentially heated cubic cavity by using direct numerical simulations and the Lagrangian particle tracking method. The main purpose of this study was to investigate the physical mechanism responsible for the modification of natural convection flow by sedimenting solid particles. Rayleigh number of Ra=106 was considered, and two important parameters, namely, the particle diameter dp and particle volume fraction ΦV, were varied in the range of dp=25,35,50,75μm and ΦV=2×10−5,5×10−5,10−4. Extensive numerical investigations were performed by considering the two-way interaction for the following two coupling cases: (i) momentum coupling only; (ii) momentum and thermal coupling between fluid and particles. Behavior of particles, flow modification, and heat transfer characteristics were investigated in detail with the relevant statistics.

Original languageEnglish
Article number108445
JournalInternational Journal of Heat and Fluid Flow
Volume79
DOIs
Publication statusPublished - 2019 Oct

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Momentum
cavities
Direct numerical simulation
Natural convection
Volume fraction
Statistics
Heat transfer
Fluids
momentum
Rayleigh number
direct numerical simulation
free convection
heat transfer
statistics
fluids
Hot Temperature
interactions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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title = "Flow modification by inertial particles in a differentially heated cubic cavity",
abstract = "In this study, we analyzed particle-laden flow in a differentially heated cubic cavity by using direct numerical simulations and the Lagrangian particle tracking method. The main purpose of this study was to investigate the physical mechanism responsible for the modification of natural convection flow by sedimenting solid particles. Rayleigh number of Ra=106 was considered, and two important parameters, namely, the particle diameter dp and particle volume fraction ΦV, were varied in the range of dp=25,35,50,75μm and ΦV=2×10−5,5×10−5,10−4. Extensive numerical investigations were performed by considering the two-way interaction for the following two coupling cases: (i) momentum coupling only; (ii) momentum and thermal coupling between fluid and particles. Behavior of particles, flow modification, and heat transfer characteristics were investigated in detail with the relevant statistics.",
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Flow modification by inertial particles in a differentially heated cubic cavity. / Gereltbyamba, Battsetseg; Lee, Changhoon.

In: International Journal of Heat and Fluid Flow, Vol. 79, 108445, 10.2019.

Research output: Contribution to journalArticle

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