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Sep 22, 2020;5 (37): 23866-23875.

Numerical and Experimental Investigation of Soot Suppression by Acoustic Oscillated Combustion.

Yanghui Ye, Xinjie Luo, Cong Dong, Yousheng Xu, Zhiguo Zhang
Author Information
  1. Yanghui Ye: Department of Energy and Environment System Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
  2. Xinjie Luo: Department of Energy and Environment System Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
  3. Cong Dong: Department of Energy and Environment System Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
  4. Yousheng Xu: Department of Energy and Environment System Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
  5. Zhiguo Zhang: Department of Energy and Environment System Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
PMID: 32984706 DOI: 10.1021/acsomega.0c03107

Abstract

The soot suppression by acoustic oscillations for acetylene diffusion flames was investigated combining numerical and experimental studies. The combustion and soot formation were predicted by the finite-rate detailed chemistry model and modified Moss-Brookes model, respectively, while the turbulence was predicted by the detached eddy simulation (DES) with a low Reynolds number correction. Experimental results showed that the soot rate almost decreased linearly with the amplitude of acoustic oscillation, and the pinch-off of the flame occurred at a large acoustic oscillation. Numerical results showed that the flame structure was well predicted, while the soot rate was over-predicted at large acoustic oscillations; the consumption of O increased obviously with the acoustic oscillation. The soot suppression was mainly caused by the decrease of the surface growth rate when the air was pushed toward the flame.

References

  1. Science. 2008 Mar 28;319(5871):1745 [PMID: 18369109]
  2. ACS Omega. 2017 Oct 20;2(10):6984-6990 [PMID: 31457281]
Journal Article

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