367
Views
14
CrossRef citations to date
0
Altmetric
Original Articles

Computational Method of the Propagation Velocity of Methane Explosion Flame Based on Correlation Coefficient of Images

, , , &
Pages 1157-1166 | Received 03 Jul 2014, Accepted 11 Feb 2015, Published online: 22 Apr 2015
 

Abstract

A computational method for propagation velocity of methane explosion flame was developed based on correlation coefficients of images. Images of propagating flame were captured by a high-speed camera at a very high frequency. In order to calculate the displacement between two adjacent images of flame, the correlation coefficients were utilized. By trimming the two adjacent images and computing the correlation coefficients, the actual displacement of flame was obtained, and the average velocity of flame between two images was subsequently obtained. The flame velocities at different concentrations of methane were calculated during the whole process of explosion. The results showed that explosion flame undergoes a process of acceleration, deceleration, reverse acceleration, and reverse deceleration. By comparing with the measured velocity, the relative error is found to be very tiny. The method can be used to calculate not only the velocity of flame front but also the velocity of the flame wherever it is in the pipe.

Additional information

Funding

The work was supported by the National Natural Science Foundation of China (Nos. 10672175 and 11325209), State Key of Laboratory of Explosion Science and Technology Foundation of Beijing Institute of Technology (No. KFJJ12-10M), and the Fundamental Research Funds for the Central Universities (2009kz03).

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 1,493.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.