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Mixing and entrainment of transitional non-circular buoyant reactive plumes

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Mixing and entrainment of transitional non-circular buoyant reactive plumes. / Jiang, Xi; Luo, K H .
In: Flow, Turbulence and Combustion, Vol. 67, No. 1, 09.2001, p. 57-79.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Jiang, X & Luo, KH 2001, 'Mixing and entrainment of transitional non-circular buoyant reactive plumes', Flow, Turbulence and Combustion, vol. 67, no. 1, pp. 57-79. https://doi.org/10.1023/A:1013539806013

APA

Jiang, X., & Luo, K. H. (2001). Mixing and entrainment of transitional non-circular buoyant reactive plumes. Flow, Turbulence and Combustion, 67(1), 57-79. https://doi.org/10.1023/A:1013539806013

Vancouver

Jiang X, Luo KH. Mixing and entrainment of transitional non-circular buoyant reactive plumes. Flow, Turbulence and Combustion. 2001 Sept;67(1):57-79. doi: 10.1023/A:1013539806013

Author

Jiang, Xi ; Luo, K H . / Mixing and entrainment of transitional non-circular buoyant reactive plumes. In: Flow, Turbulence and Combustion. 2001 ; Vol. 67, No. 1. pp. 57-79.

Bibtex

@article{1c8576f58a4c46c09db5d060aebd4089,
title = "Mixing and entrainment of transitional non-circular buoyant reactive plumes",
abstract = "Three-dimensional spatial direct numerical simulation is used to investigate the evolution of reactive plumes established on non-circular sources. Simulations are performed for three cases: a rectangular plume with an aspect ratio of 2:1, a square plume, and the square plume in a corner configuration. Buoyancy-induced large scale vortical structures evolve spatially in the flow field. A stronger tendency of transition to turbulence is observed for the free rectangular plume than the free square case due to the aspect ratio effect. Dynamics of the corner square plume differs significantly from the corresponding free case due to the enhanced mixing by the side-wall effects. A turbulent inertial subrange has been observed for the free rectangular and corner square plumes. Mean flow properties are also calculated. The study shows significant effects of source geometry and side-wall boundary on the flow transition and entrainment of reactive plumes.",
keywords = "buoyancy, DNS, entrainment, mixing, non-premixed flame, reaction, transition, DIRECT NUMERICAL-SIMULATION, SQUARE JETS, BOUNDARY-CONDITIONS, DIFFUSION FLAMES, HEAT RELEASE, TURBULENT, FLOWS, INSTABILITY, COMBUSTION",
author = "Xi Jiang and Luo, {K H}",
year = "2001",
month = sep,
doi = "10.1023/A:1013539806013",
language = "English",
volume = "67",
pages = "57--79",
journal = "Flow, Turbulence and Combustion",
issn = "1386-6184",
publisher = "Springer Netherlands",
number = "1",

}

RIS

TY - JOUR

T1 - Mixing and entrainment of transitional non-circular buoyant reactive plumes

AU - Jiang, Xi

AU - Luo, K H

PY - 2001/9

Y1 - 2001/9

N2 - Three-dimensional spatial direct numerical simulation is used to investigate the evolution of reactive plumes established on non-circular sources. Simulations are performed for three cases: a rectangular plume with an aspect ratio of 2:1, a square plume, and the square plume in a corner configuration. Buoyancy-induced large scale vortical structures evolve spatially in the flow field. A stronger tendency of transition to turbulence is observed for the free rectangular plume than the free square case due to the aspect ratio effect. Dynamics of the corner square plume differs significantly from the corresponding free case due to the enhanced mixing by the side-wall effects. A turbulent inertial subrange has been observed for the free rectangular and corner square plumes. Mean flow properties are also calculated. The study shows significant effects of source geometry and side-wall boundary on the flow transition and entrainment of reactive plumes.

AB - Three-dimensional spatial direct numerical simulation is used to investigate the evolution of reactive plumes established on non-circular sources. Simulations are performed for three cases: a rectangular plume with an aspect ratio of 2:1, a square plume, and the square plume in a corner configuration. Buoyancy-induced large scale vortical structures evolve spatially in the flow field. A stronger tendency of transition to turbulence is observed for the free rectangular plume than the free square case due to the aspect ratio effect. Dynamics of the corner square plume differs significantly from the corresponding free case due to the enhanced mixing by the side-wall effects. A turbulent inertial subrange has been observed for the free rectangular and corner square plumes. Mean flow properties are also calculated. The study shows significant effects of source geometry and side-wall boundary on the flow transition and entrainment of reactive plumes.

KW - buoyancy

KW - DNS

KW - entrainment

KW - mixing

KW - non-premixed flame

KW - reaction

KW - transition

KW - DIRECT NUMERICAL-SIMULATION

KW - SQUARE JETS

KW - BOUNDARY-CONDITIONS

KW - DIFFUSION FLAMES

KW - HEAT RELEASE

KW - TURBULENT

KW - FLOWS

KW - INSTABILITY

KW - COMBUSTION

U2 - 10.1023/A:1013539806013

DO - 10.1023/A:1013539806013

M3 - Journal article

VL - 67

SP - 57

EP - 79

JO - Flow, Turbulence and Combustion

JF - Flow, Turbulence and Combustion

SN - 1386-6184

IS - 1

ER -