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A computational investigation of  sooting limits of spherical diffusion flames V.R. Lecoustre 1 , B.H. Chao 2 , P.B. Sunderland 1 , D.L. Urban 3 , D.P. Stocker 3 , R.L. Axelbaum 4 1  University of Maryland, College Park, MD ;  2  University of Hawaii, Honolulu, HI ; 3  NASA Glenn Research Center, Cleveland, OH ;  4  Washington University, St. Louis, MO This work was supported by NASA. We thank S.A. Skeen for helpful discussions .   5 th  U.S. National Combustion Meeting   March 27, 2007
Background ,[object Object],[object Object],[object Object],[object Object],[object Object]
Objectives ,[object Object],[object Object],[object Object],[object Object],[object Object]
Identification of Sooting Limits ,[object Object],[object Object],[object Object],[object Object],[object Object],(a) 18% C 2 H 4     27% O 2 (b) 18% C 2 H 4     28% O 2 30 mm (c) O 2     12% C 2 H 4 (d) O 2     13% C 2 H 4
Sooting Limit Flames 2670 0.406 0.692 1 0.13 Fuel 17 2578 0.374 0.666 0.8 0.12 Fuel 16 2539 0.283 0.509 0.5 0.15 Fuel 15 2370 0.197 0.336 0.3 0.19 Fuel 14 2274 0.196 0.277 0.25 0.21 Fuel 13 1814 0.049 0.066 0.13 0.6 Fuel 12 1835 0.039 0.051 0.13 0.8 Fuel 11 1847 0.024 0.041 0.13 1 Fuel 10 2740 0.015 0.661 1 0.15 Oxidizer 9 2528 0.038 0.685 0.8 0.11 Oxidizer 8 2381 0.107 0.586 0.5 0.11 Oxidizer 7 2308 0.383 0.353 0.29 0.17 Oxidizer 6 2306 0.429 0.333 0.28 0.18 Oxidizer 5 2238 0.86 0.225 0.23 0.25 Oxidizer 4 2226 1.03 0.18 0.21 0.31 Oxidizer 3 2326 1.44 0.102 0.21 0.6 Oxidizer 2 2390 2.06 0.065 0.20 1 Oxidizer 1 T ad ,  K t res , s Z st X O2 X C2H4 Ambient Flame Normal Flames Inverse Flames
Numerical methods ,[object Object],[object Object],[object Object],[object Object],[object Object]
Structure of sooting limit flames ,[object Object],[object Object],[object Object]
Results : T 0.6  vs. t res ,[object Object],[object Object]
Results : T 0.6  vs. Z st ,[object Object],[object Object]
Conclusions ,[object Object],[object Object],[object Object]

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Sooting Limits of Spherical Diffusion Flames

  • 1. A computational investigation of sooting limits of spherical diffusion flames V.R. Lecoustre 1 , B.H. Chao 2 , P.B. Sunderland 1 , D.L. Urban 3 , D.P. Stocker 3 , R.L. Axelbaum 4 1 University of Maryland, College Park, MD ; 2 University of Hawaii, Honolulu, HI ; 3 NASA Glenn Research Center, Cleveland, OH ; 4 Washington University, St. Louis, MO This work was supported by NASA. We thank S.A. Skeen for helpful discussions . 5 th U.S. National Combustion Meeting March 27, 2007
  • 2.
  • 3.
  • 4.
  • 5. Sooting Limit Flames 2670 0.406 0.692 1 0.13 Fuel 17 2578 0.374 0.666 0.8 0.12 Fuel 16 2539 0.283 0.509 0.5 0.15 Fuel 15 2370 0.197 0.336 0.3 0.19 Fuel 14 2274 0.196 0.277 0.25 0.21 Fuel 13 1814 0.049 0.066 0.13 0.6 Fuel 12 1835 0.039 0.051 0.13 0.8 Fuel 11 1847 0.024 0.041 0.13 1 Fuel 10 2740 0.015 0.661 1 0.15 Oxidizer 9 2528 0.038 0.685 0.8 0.11 Oxidizer 8 2381 0.107 0.586 0.5 0.11 Oxidizer 7 2308 0.383 0.353 0.29 0.17 Oxidizer 6 2306 0.429 0.333 0.28 0.18 Oxidizer 5 2238 0.86 0.225 0.23 0.25 Oxidizer 4 2226 1.03 0.18 0.21 0.31 Oxidizer 3 2326 1.44 0.102 0.21 0.6 Oxidizer 2 2390 2.06 0.065 0.20 1 Oxidizer 1 T ad , K t res , s Z st X O2 X C2H4 Ambient Flame Normal Flames Inverse Flames
  • 6.
  • 7.
  • 8.
  • 9.
  • 10.

Notas do Editor

  1. Good morning ladies and gentlemen and thank you for attending my presentation. My name is Vivien Lecoustre, I am french mechanical engineer pursuing a PhD in mechanical engineering @ UMD. My topic presentation is a computational investigation of sooting limits of spherical diffusion flames. My co-authors are professor Beei Huan Chao, from university of Hawaii, Professor Peter Sunderland (who is my advisor) from UMD, David Urban and Denis Stocker, from the NASA Glenn Research center and Professor Richard Axelbaum. I would like to acknowledge the support given NASA for this project and thank Scott Skeen for its helpful discussion on the result.