Experimental study of the effect of helium/nitrogen concentration and initial droplet diameter on nonane droplet combustion with minimal convection

Bae, Jun Hang; Avedisian, C. Thomas

doi:10.1016/j.proci.2006.08.042

Cited by 21 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The general procedures for the low gravity experiments are similar to those described previously [2,3,9,10]. To promote spherical gas phase symmetry, the experimental package containing the test droplet is released into free-fall to create a low buoyancy environment and the experiments are conducted during the fall.…”

Section: Methodsmentioning

confidence: 99%

“…The initial droplet diameters examined, D o , are between 0.4 and 0.95 mm. The chamber volume measuring 19 cm Â 18 cm Â 25 cm was sufficiently large ($10 À5 m 3 ) compared to the droplet volume ([10 À9 m 3 ) or resulting vapor volume ($10 À7 m 3 ) after droplet evaporation that droplet burning would have little influence on ambient gas volume fraction.…”

Section: Methodsmentioning

confidence: 99%

“…nnonane is strongly sooting in air which allows examination of the influence of sooting, previous experience exists with nonane which facilitates experimentation [2,3], and it is a surrogate constituent for a model transportation fuel [4]. The case of spherical gas phase symmetry is realized 1540 by a combination of restricting the droplet's ability to move during burning and by carrying out the experiments in a gravitational field that is low enough so that the effect of buoyancy is considerably reduced.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonane droplet combustion with and without buoyant convection: Flame structure, burning rate and extinction in air and helium

Bae

Avedisian

2009

Proceedings of the Combustion Institute

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nonane droplet combustion with and without buoyant convection: Flame structure, burning rate and extinction in air and helium

Bae

Avedisian

2009

Proceedings of the Combustion Institute

Self Cite

View full text Add to dashboard Cite

“…Therefore, it has some significance to study about the influences of the droplet radius ratios on spray combustion. In resent years, the studies [2][3][4][5] about the influences of the droplet initial diameter on the single droplet burning are increasing. However, the researches about the effects of droplet radius ratios on spray combustion considering the droplets interaction are not plenty.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Two Droplets Burning at Different Droplet Radius Ratios

Hong¹,

Zhao²,

Zhang³

et al. 2015

Proceedings of the International Conference on Logistics, Engineering, Management and Computer Science

View full text Add to dashboard Cite

Abstract-It has some significance to study the influences of the droplet radius ratios on spray combustion due to the varying droplet radius ratios among droplets in the actual spray combustion. The volume of fluid (VOF) formulation is applied to model the combustion process of two decane droplets with different radiuses in a hot convective flow and the effects of the droplet ratios on burning rates of two droplets at fixed droplet center spacing are analyzed. The results show: when the burning rates of the front and the back droplets compare with that of the corresponding single droplet, the interaction reduces the burning rate of either droplet under different droplet radius ratios. For the same initial droplet radius, the burning rate of droplet located at the front is larger than that at the back under different droplet radius ratios. The results obtained provide some reference for the basic researches of spray combustion.

show abstract

“…Soot in the droplet flame is one of reasons for nonlinear burning of droplets. Most of droplet combustion models have not included soot and its effects and some experimental studies have been conducted using non sooting fuel [10][11][12] , controlled O 2 concentration 13) and inert substitution to mitigate the sooting effect [14][15][16] . The burning rate of the n-heptane droplet is affected by the accumulation of the soot shell 8) and the soot production increases with initial droplet diameter.…”

Section: Introductionmentioning

confidence: 99%

Effects of Carbon Dioxide on Unsteady Combustion of Isolated Fuel Droplet in Microgravity

Nakaya

Nagashima

Takase

et al. 2010

AEROSPACE TECHNOLOGY JAPAN

View full text Add to dashboard Cite

An experimental study on the unsteady combustion of the n-decane droplet in microgravity was performed.Experimental observations were performed in a drop tower to create a microgravity condition. The initial droplet diameter was varied and the unsteady behavior of the burning rate was investigated. The effect of CO 2 in the ambience on the burning rate and soot formation was also investigated. The results indicated the staged behavior of the burning rate for n-decane droplet combustion in air, and it might be due to the soot shell agglomeration and collapse. The staged behavior was not observed when the initial droplet diameter was small. The intensity of the luminous flame of n-decane droplets became weak with increase in CO 2 concentration and the mitigation effect was greater as the initial droplet diameter decreases. The staged behavior of the burning rate was not observed when the concentration of CO 2 in the ambience increased and the burning rate gradually increased with time. The unsteady behavior of the burning rate for n-decane droplet was apparently observed.

show abstract

Experimental study of the effect of helium/nitrogen concentration and initial droplet diameter on nonane droplet combustion with minimal convection

Cited by 21 publications

References 14 publications

Nonane droplet combustion with and without buoyant convection: Flame structure, burning rate and extinction in air and helium

Nonane droplet combustion with and without buoyant convection: Flame structure, burning rate and extinction in air and helium

Numerical Simulation on Two Droplets Burning at Different Droplet Radius Ratios

Effects of Carbon Dioxide on Unsteady Combustion of Isolated Fuel Droplet in Microgravity

Contact Info

Product

Resources

About