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Tethered methanol droplet combustion in carbon-dioxide enriched environment under microgravity conditions

Published on Jan 1, 2012in Combustion and Flame4.12
· DOI :10.1016/j.combustflame.2011.06.014
Tanvir Farouk17
Estimated H-index: 17
(Princeton University),
Frederick L. Dryer66
Estimated H-index: 66
(Princeton University)
Abstract
Abstract Tethered methanol droplet combustion in carbon dioxide enriched environment is simulated using a transient one-dimensional spherosymmetric droplet combustion model that includes the effects of tethering. A priori numerical predictions are compared against recent experimental data. The numerical predictions compare favorably with the experimental results and show significant effects of tethering on the experimental observations. The presence of a relatively large quartz fiber tether increases the burning rate significantly and hence decreases the extinction diameter. The simulations further show that the extinction diameter depends on both the initial droplet diameter and the ambient concentration of carbon dioxide. Increasing the droplet diameter and ambient carbon dioxide concentration both of them lead to a decrease in the burning rate and increase in the extinction diameter. The influence of ambient carbon dioxide concentration on extinction shows a sharp transition in extinction for larger size droplets ( d o  > 1.5 mm) due to a change in the mode of extinction from diffusive to radiative control. In addition predictions from the numerical model is compared against a recently developed simplified theoretical model for predicting extinction diameter for methanol droplets, where the presence and heat transfer contribution of the tether is not taken into account implicitly. The numerical results suggest some limitation in the theoretical modeling assumptions for favorable comparisons with the experimental data.
  • References (25)
  • Citations (21)
References25
Newest
#1Shinji Nakaya (OPU: Osaka Prefecture University)H-Index: 8
#2Daisuke Segawa (OPU: Osaka Prefecture University)H-Index: 10
Last.Tomoya Furuta (OPU: Osaka Prefecture University)H-Index: 1
view all 5 authors...
#1Michael C. Hicks (Glenn Research Center)H-Index: 8
#2Vedha Nayagam (Glenn Research Center)H-Index: 13
Last.Forman A. Williams (UCSD: University of California, San Diego)H-Index: 48
view all 3 authors...
#1Zheng Chen (Princeton University)H-Index: 30
#2Xiao Qin (Princeton University)H-Index: 7
Last.Fengshan Liu (National Research Council)H-Index: 1
view all 5 authors...
#1Masato Mikami (Yamaguchi University)H-Index: 14
#2Hiroshi Oyagi (Yamaguchi University)H-Index: 3
Last.Shinichi Yoda (JAXA: Japan Aerospace Exploration Agency)H-Index: 21
view all 6 authors...
#1Andrei F. Kazakov (Princeton University)H-Index: 24
#2Jordan Conley (Princeton University)H-Index: 2
Last.Frederick L. Dryer (Princeton University)H-Index: 66
view all 3 authors...
Cited By21
Newest
#1Anand Sankaranarayanan (IITB: Indian Institute of Technology Bombay)
#2Sohan Lal (IITB: Indian Institute of Technology Bombay)H-Index: 3
Last.Neeraj Kumbhakarna (IITB: Indian Institute of Technology Bombay)H-Index: 5
view all 6 authors...
#1Yu Zhang (HUST: Huazhong University of Science and Technology)H-Index: 5
#2Yuhan Huang (HUST: Huazhong University of Science and Technology)H-Index: 8
Last.Zhaowen Wang (HUST: Huazhong University of Science and Technology)H-Index: 6
view all 7 authors...
#1Fahd E. Alam (USC: University of South Carolina)H-Index: 4
#2Frederick L. Dryer (Princeton University)H-Index: 4
Last.Tanvir I. Farouk (USC: University of South Carolina)H-Index: 4
view all 3 authors...
#1Tanvir Farouk (USC: University of South Carolina)H-Index: 17
#2Michael C. Hicks (Glenn Research Center)H-Index: 8
Last.Frederick L. Dryer (Princeton University)H-Index: 66
view all 3 authors...
#1Hidefumi Kataoka (OPU: Osaka Prefecture University)H-Index: 2
#2H. Yamashita (OPU: Osaka Prefecture University)H-Index: 1
Last.Toshikazu Kadota (OPU: Osaka Prefecture University)H-Index: 15
view all 8 authors...
#1Fahd E. Alam (USC: University of South Carolina)H-Index: 4
#2Yu Cheng Liu (Cornell University)H-Index: 10
Last.Tanvir I. Farouk (USC: University of South Carolina)H-Index: 4
view all 5 authors...
#1Yu Cheng Liu (Cornell University)H-Index: 10
#2Yuhao Xu (Cornell University)H-Index: 7
Last.Michael C. Hicks (Glenn Research Center)H-Index: 8
view all 4 authors...
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