Huang, Xianjia, Wang, Jinkai, Zhu, He, Xing, Chaoliang, Wen, Jennifer and Tang, Fei (2022) Flame-splitting mechanism of buoyancy-controlled diffusion plumes generated by a rectangular fire source attached to a sidewall. International Journal of Thermal Sciences, 179 . 107670. doi:10.1016/j.ijthermalsci.2022.107670 ISSN 1290-0729.
Preview |
PDF
WRAP-Flame-splitting-mechanism-of-buoyancy-controlled-diffusion-plumes-generated-by-a-rectangular-fire-source-attached-to-a-sidewall-Wen-2022.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (2MB) | Preview |
Abstract
Flame morphology is an important characteristic parameter for buoyant-controlled fuel diffusion flames. In this study, fire tests were conducted using rectangular burners placed against a thermally thin sidewall. Measurements were obtained for the flame morphology and temperature distribution on the back side of the sidewall. When the aspect ratio of the fire source was 7.45, flame branching into two regions was observed and was further evidenced by the temperature distributions on the corresponding two heated regions on the sidewall. The mechanism of the flame split was investigated, and numerical simulations and physical analyses were performed. The flame split occurred when the entrained air from the middle of the burner length was not consumed before it reached the bottom of the sidewall. Therefore, an appropriate ratio of flame height to burner length was proposed for the occurrence of the flame split. The critical ratio for the flame split was validated by other fire experiments of fire sources located against the sidewall.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering |
| Library of Congress Subject Headings (LCSH): | Fire, Flame spread -- Research, Combustion |
| Journal or Publication Title: | International Journal of Thermal Sciences |
| Publisher: | Elsevier |
| ISSN: | 1290-0729 |
| Official Date: | September 2022 |
| Dates: | Date Event September 2022 Published 6 May 2022 Available 26 April 2022 Accepted 27 January 2022 Submitted |
| Volume: | 179 |
| Number of Pages: | 10 |
| Article Number: | 107670 |
| DOI: | 10.1016/j.ijthermalsci.2022.107670 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| Copyright Holders: | Elsevier |
| Date of first compliant deposit: | 16 May 2022 |
| Date of first compliant Open Access: | 6 May 2023 |
| RIOXX Funder/Project Grant: | Project/Grant ID RIOXX Funder Name Funder ID 2021A1515012257 Guangdong Basic and Applied Basic Research Foundation UNSPECIFIED 202002030124 Guangzhou Science and Technology Program key projects |
| URI: | https://wrap.warwick.ac.uk/165456/ |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |