Analysis of a Quasi-Two-Dimensional Flamelet Model on a Three-Feed Non-premixed Oxy-Combustion Burner

Yu, Panlong; Watanabe, Hiroaki; Pitsch, Heinz; Yuri, Isao; Nishida, Hiroyuki; Kitagawa, Toshiaki

doi:10.1007/s10494-021-00274-x

Cited by 8 publications

(2 citation statements)

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“…In the flow field, the mean value of the mixture fraction (Z ) and progress variable (C ) will be obtained through the corresponding transport equations, and the mixture fraction variance (Z ) is modeled based on a dynamic procedure (Pierce et al, 1998). The additional manifold h n is the normalized total enthalpy defect, which is referred to the existing literature (Rieth et al, 2016;Yu et al, 2022),…”

Section: Methodology 21 Chemistry Modelmentioning

confidence: 99%

“…Three cases of computations have been conducted in which two cases are used to test the original NA-FPV. The computations are implemented by using the unstructured LES solver referred to as NuFD-FFR which has been extended by Kyushu University (Watanabe and Kurose, 2020;Yu et al, 2018Yu et al, , 2022, Kyoto University (Muto et al, 2019), and Yu, Yadav, Hu, Kai, Norinaga, Kurose and Watanabe, Journal of Thermal Science and Technology, Vol.18, No.2 (2023) CRIEPI (Ahn et al, 2017;Watanabe et al, 2015). The time advancement in the momentum equation is accomplished by the Crank Nicolson method, while for scalars such as mixture fraction, progress variable, and the total enthalpy, the Euler implicit method is used.…”

Section:  mentioning

confidence: 99%

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Large-eddy simulation of the non-adiabatic reforming process of hot coke oven gas using a flamelet-based approach

YU,

YADAV,

et al. 2023

JTST

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Large-eddy simulation (LES) coupling with a non-adiabatic flamelet progress variable (NA-FPV) approach with reconstructed flamelet chemistry states is employed to simulate the hot coke oven gas (HCOG) reforming process. In the NA-FPV model, the chemistry states are first computed based on the correction factor for enthalpy defects and then modified by substituting the species statistics in the maximum heat loss state with those of less heat release to compensate for the unphysical results. The numerical results of LES coupling this NA-FPV model have been compared with the experimental measurement data in terms of temperature and yields, and reasonable agreements have been achieved. According to the LES results, it is seen O2 only participates in the combustion process in the upper stream and the combustion process which mainly consumes H2 and CO is to provide the other reforming process with heat and steam. In the upper and middle streams, the main HCOG jet is wrapped by the swirling high-temperature combustion products, and the reforming process primarily takes place by consuming CH4, polycyclic aromatic hydrocarbons (PAHs), and steam, while considerable H2, CO, and CO2 are produced. It is observed that accompanying the reforming process C2H2 is generated and it peaks in the middle stream, thus it is considered soot is formed in the complex reactions.

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Section: Methodology 21 Chemistry Modelmentioning

confidence: 99%