Next Article in Journal
Towards Low-Cost Pavement Condition Health Monitoring and Analysis Using Deep Learning
Next Article in Special Issue
Review of Advancement in Variable Valve Actuation of Internal Combustion Engines
Previous Article in Journal
Risk Quantification and Analysis of Coupled Factors Based on the DEMATEL Model and a Bayesian Network
Previous Article in Special Issue
Similarity Analysis for Time Series-Based 2D Temperature Measurement of Engine Exhaust Gas in TDLAT
 
 
Search for Articles:
Title / Keyword
Author / Affiliation
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Applied Sciences
Volume 10
Issue 1
10.3390/app10010318
applsci-logo
Submit to this Journal Review for this Journal Edit a Special Issue
► Article Menu

Article Menu

Printed Edition

A printed edition of this Special Issue is available at MDPI Books....
share announcement question_answer thumb_up
...
textsms
...
Article

Numerical Study of the Comparison of Symmetrical and Asymmetrical Eddy-Generation Scheme on the Fire Whirl Formulation and Evolution

by
Cheng Wang
1,
Anthony Chun Yin Yuen
1,*,
Qing Nian Chan
1,
Timothy Bo Yuan Chen
1,
Ho Lung Yip
1,
Sherman Chi-Pok Cheung
2,
Sanghoon Kook
1 and
Guan Heng Yeoh
1,3
1
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia
2
School of Mechanical and Automotive Engineering, RMIT University, Melbourne, VIC 3000, Australia
3
Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee DC, NSW 2232, Australia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(1), 318; https://doi.org/10.3390/app10010318
Received: 30 November 2019 / Revised: 26 December 2019 / Accepted: 28 December 2019 / Published: 1 January 2020
(This article belongs to the Special Issue Progress in Combustion Diagnostics, Science and Technology)
View Full-Text Download PDF
Browse Figures

Abstract

A numerical study of the fire whirl formation under symmetrical and asymmetrical entraining configuration is presented. This work aims to assess the effect of eddy-generation configuration on the evolution of the intriguing phenomenon coupled with both flow dynamics and combustion. The numerical framework implements large-eddy simulation, detailed chemistry to capture the sophisticated turbulence-chemistry interaction under reasonable computational cost. It also adopts liquid-based clean fuel with fixed injection rate and uniformed discretisation scheme to eliminate potential interference introduced by various aspects of uncertainties. The result reveals that the nascent fire whirl formulates significantly rapidly under the symmetrical two-slit configuration, with extended flame height and constrained vortex structure, compared with the asymmetrical baseline. However, its revolution orbit gradually diverges from domain centreline and eventually stabilises with a large radius of rotation, whereas the revolution pattern of that from the baseline case is relatively unchanged from the inception of nascent fire whirl. Through the analysis, the observed difference in evaluation pathway could be explained using the concept of circular motion with constant centripetal force. This methodology showcases its feasibility to reveal and visualise the fundamental insight and facilitate profound understanding of the flaming behaviour to benefit both research and industrial sectors. View Full-Text
Keywords: fire whirl; computational fluid dynamics; eddy-generation mechanism; combustion modelling; detailed chemistry; large eddy simulation fire whirl; computational fluid dynamics; eddy-generation mechanism; combustion modelling; detailed chemistry; large eddy simulation
►▼ Show Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
SciFeed

Share and Cite

MDPI and ACS Style

Wang, C.; Yuen, A.C.Y.; Chan, Q.N.; Chen, T.B.Y.; Yip, H.L.; Cheung, S.C.-P.; Kook, S.; Yeoh, G.H. Numerical Study of the Comparison of Symmetrical and Asymmetrical Eddy-Generation Scheme on the Fire Whirl Formulation and Evolution. Appl. Sci. 2020, 10, 318. https://doi.org/10.3390/app10010318

AMA Style

Wang C, Yuen ACY, Chan QN, Chen TBY, Yip HL, Cheung SC-P, Kook S, Yeoh GH. Numerical Study of the Comparison of Symmetrical and Asymmetrical Eddy-Generation Scheme on the Fire Whirl Formulation and Evolution. Applied Sciences. 2020; 10(1):318. https://doi.org/10.3390/app10010318

Chicago/Turabian Style

Wang, Cheng, Anthony Chun Yin Yuen, Qing Nian Chan, Timothy Bo Yuan Chen, Ho Lung Yip, Sherman Chi-Pok Cheung, Sanghoon Kook, and Guan Heng Yeoh. 2020. "Numerical Study of the Comparison of Symmetrical and Asymmetrical Eddy-Generation Scheme on the Fire Whirl Formulation and Evolution" Applied Sciences 10, no. 1: 318. https://doi.org/10.3390/app10010318

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Map by Country/Region

1
Back to TopTop