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Direct numerical simulation of a non-premixed impinging jet flame

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Direct numerical simulation of a non-premixed impinging jet flame. / Jiang, Xi; Zhao, Hua; Luo, Kai H.
In: Journal of Heat Transfer , Vol. 129, No. 8, 08.2007, p. 951-957.

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

Harvard

Jiang, X, Zhao, H & Luo, KH 2007, 'Direct numerical simulation of a non-premixed impinging jet flame', Journal of Heat Transfer , vol. 129, no. 8, pp. 951-957. https://doi.org/10.1115/1.2737480

APA

Jiang, X., Zhao, H., & Luo, K. H. (2007). Direct numerical simulation of a non-premixed impinging jet flame. Journal of Heat Transfer , 129(8), 951-957. https://doi.org/10.1115/1.2737480

Vancouver

Jiang X, Zhao H, Luo KH. Direct numerical simulation of a non-premixed impinging jet flame. Journal of Heat Transfer . 2007 Aug;129(8):951-957. doi: 10.1115/1.2737480

Author

Jiang, Xi ; Zhao, Hua ; Luo, Kai H. / Direct numerical simulation of a non-premixed impinging jet flame. In: Journal of Heat Transfer . 2007 ; Vol. 129, No. 8. pp. 951-957.

Bibtex

@article{7dd8187524b6447492961a6753a55894,
title = "Direct numerical simulation of a non-premixed impinging jet flame",
abstract = "A non-premixed impinging jet flame at a Reynolds number 2000 and a nozzle-to-plate distance of two jet diameters was investigated using direct numerical simulation (DNS). Fully three-dimensional simulations were performed employing high-order numerical methods and high-fidelity boundary conditions to solve governing equations for variable-density flow and finite-rate Arrhenius chemistry. Both the instantaneous and time-averaged flow and heat transfer characteristics of the impinging flame were examined. Detailed analysis of the near-wall layer was conducted. Because of the relaminarization effect of the wall, the wall boundary layer of the impinging jet is very thin, that is, in the regime of viscous sublayer It was found that the law-of-the-wall relations for nonisothermal flows in the literature need to be revisited. A reduced wall distance incorporating the fluid dynamic viscosity was proposed to be used in the law-of-the-wall relations for nonisothermal flows, which showed improved prediction over the law of the wall with the reduced wall distance defined in terms of fluid kinematic viscosity in the literature. Effects of external perturbation on the dynamic behavior of the impinging flame were found to insignificant.",
keywords = "direct numerical simulation, heat transfer, impinging flame, law-of-the-wall, viscous sublayer, wall, HEAT-TRANSFER CHARACTERISTICS, TURBULENT CHANNEL FLOW, WALL INTERACTION, BOUNDARY-CONDITIONS, COMBUSTION, DYNAMICS, SCHEMES, SURFACE, FLUXES",
author = "Xi Jiang and Hua Zhao and Luo, {Kai H.}",
year = "2007",
month = aug,
doi = "10.1115/1.2737480",
language = "English",
volume = "129",
pages = "951--957",
journal = "Journal of Heat Transfer ",
issn = "0022-1481",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "8",

}

RIS

TY - JOUR

T1 - Direct numerical simulation of a non-premixed impinging jet flame

AU - Jiang, Xi

AU - Zhao, Hua

AU - Luo, Kai H.

PY - 2007/8

Y1 - 2007/8

N2 - A non-premixed impinging jet flame at a Reynolds number 2000 and a nozzle-to-plate distance of two jet diameters was investigated using direct numerical simulation (DNS). Fully three-dimensional simulations were performed employing high-order numerical methods and high-fidelity boundary conditions to solve governing equations for variable-density flow and finite-rate Arrhenius chemistry. Both the instantaneous and time-averaged flow and heat transfer characteristics of the impinging flame were examined. Detailed analysis of the near-wall layer was conducted. Because of the relaminarization effect of the wall, the wall boundary layer of the impinging jet is very thin, that is, in the regime of viscous sublayer It was found that the law-of-the-wall relations for nonisothermal flows in the literature need to be revisited. A reduced wall distance incorporating the fluid dynamic viscosity was proposed to be used in the law-of-the-wall relations for nonisothermal flows, which showed improved prediction over the law of the wall with the reduced wall distance defined in terms of fluid kinematic viscosity in the literature. Effects of external perturbation on the dynamic behavior of the impinging flame were found to insignificant.

AB - A non-premixed impinging jet flame at a Reynolds number 2000 and a nozzle-to-plate distance of two jet diameters was investigated using direct numerical simulation (DNS). Fully three-dimensional simulations were performed employing high-order numerical methods and high-fidelity boundary conditions to solve governing equations for variable-density flow and finite-rate Arrhenius chemistry. Both the instantaneous and time-averaged flow and heat transfer characteristics of the impinging flame were examined. Detailed analysis of the near-wall layer was conducted. Because of the relaminarization effect of the wall, the wall boundary layer of the impinging jet is very thin, that is, in the regime of viscous sublayer It was found that the law-of-the-wall relations for nonisothermal flows in the literature need to be revisited. A reduced wall distance incorporating the fluid dynamic viscosity was proposed to be used in the law-of-the-wall relations for nonisothermal flows, which showed improved prediction over the law of the wall with the reduced wall distance defined in terms of fluid kinematic viscosity in the literature. Effects of external perturbation on the dynamic behavior of the impinging flame were found to insignificant.

KW - direct numerical simulation

KW - heat transfer

KW - impinging flame

KW - law-of-the-wall

KW - viscous sublayer

KW - wall

KW - HEAT-TRANSFER CHARACTERISTICS

KW - TURBULENT CHANNEL FLOW

KW - WALL INTERACTION

KW - BOUNDARY-CONDITIONS

KW - COMBUSTION

KW - DYNAMICS

KW - SCHEMES

KW - SURFACE

KW - FLUXES

U2 - 10.1115/1.2737480

DO - 10.1115/1.2737480

M3 - Journal article

VL - 129

SP - 951

EP - 957

JO - Journal of Heat Transfer

JF - Journal of Heat Transfer

SN - 0022-1481

IS - 8

ER -