Particle-to-fluid heat transfer in particle-laden turbulence
Abstract
Preferential concentration of inertial particles by turbulence is a well-recognized phenomenon. This work investigates how this phenomenon impacts the mean heat transfer between the fluid phase and the particle phase. Using direct numerical simulations of homogeneous and isotropic turbulent flows coupled with Lagrangian point particle tracking, we explore this phenomenon over a wide range of input parameters. Among the nine independent dimensionless numbers defining this problem, we show that the particle Stokes number, defined based on a large-eddy time, and an identified number called the heat-mixing parameter have the most significant effect on particle-to-gas heat transfer, while variation in other nondimensional numbers can be ignored. An investigation of regimes with significant particle mass loading suggests that the mean heat transfer from particles to gas is hardly affected by momentum two-way coupling. Using our numerical results, we propose an algebraic reduced-order model for heat transfer in particle-laden turbulence.
- Authors:
-
- Stanford Univ., CA (United States). Dept. of Mechanical Engineering
- Publication Date:
- Research Org.:
- Stanford Univ., CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1461646
- Alternate Identifier(s):
- OSTI ID: 1461597
- Grant/Contract Number:
- NA0002373
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review Fluids
- Additional Journal Information:
- Journal Volume: 3; Journal Issue: 7; Journal ID: ISSN 2469-990X
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; Turbulence; Particle-laden flows; Heat Transfer; turbulent multiphase flows
Citation Formats
Pouransari, Hadi, and Mani, Ali. Particle-to-fluid heat transfer in particle-laden turbulence. United States: N. p., 2018.
Web. doi:10.1103/PhysRevFluids.3.074304.
Pouransari, Hadi, & Mani, Ali. Particle-to-fluid heat transfer in particle-laden turbulence. United States. https://doi.org/10.1103/PhysRevFluids.3.074304
Pouransari, Hadi, and Mani, Ali. 2018.
"Particle-to-fluid heat transfer in particle-laden turbulence". United States. https://doi.org/10.1103/PhysRevFluids.3.074304. https://www.osti.gov/servlets/purl/1461646.
@article{osti_1461646,
title = {Particle-to-fluid heat transfer in particle-laden turbulence},
author = {Pouransari, Hadi and Mani, Ali},
abstractNote = {Preferential concentration of inertial particles by turbulence is a well-recognized phenomenon. This work investigates how this phenomenon impacts the mean heat transfer between the fluid phase and the particle phase. Using direct numerical simulations of homogeneous and isotropic turbulent flows coupled with Lagrangian point particle tracking, we explore this phenomenon over a wide range of input parameters. Among the nine independent dimensionless numbers defining this problem, we show that the particle Stokes number, defined based on a large-eddy time, and an identified number called the heat-mixing parameter have the most significant effect on particle-to-gas heat transfer, while variation in other nondimensional numbers can be ignored. An investigation of regimes with significant particle mass loading suggests that the mean heat transfer from particles to gas is hardly affected by momentum two-way coupling. Using our numerical results, we propose an algebraic reduced-order model for heat transfer in particle-laden turbulence.},
doi = {10.1103/PhysRevFluids.3.074304},
url = {https://www.osti.gov/biblio/1461646},
journal = {Physical Review Fluids},
issn = {2469-990X},
number = 7,
volume = 3,
place = {United States},
year = {Wed Jul 25 00:00:00 EDT 2018},
month = {Wed Jul 25 00:00:00 EDT 2018}
}
Web of Science
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