Combustion of a Fuel Droplet in a Mixed Convective Environment

Balakrishnan, P.; Sundararajan, T.; Natarajan, R.

doi:10.1080/00102200108952152

Cited by 20 publications

(14 citation statements)

References 14 publications

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“…6. Experimental results of Balakrishnan et al [12] are also shown in this figure for comparison. In this case of envelope flame also, the comparison between the numerical results and the experimental data is quite good.…”

Section: Validationmentioning

confidence: 80%

“…The effect of a convective flow field on the rate of burning of liquid droplets has been investigated by several authors in the past [9,10]. Recently, Balakrishnan et al [11,12] investigated the quasi-steady burning of spherical particles in a mixed convective environment, at low Reynolds numbers. The existence of an envelope diffusion flame was assumed in these studies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flame shapes and burning rates of spherical fuel particles in a mixed convective environment

Raghavan

Babu

Sundararajan

et al. 2005

International Journal of Heat and Mass Transfer

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Section: Validationmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Flame shapes and burning rates of spherical fuel particles in a mixed convective environment

Raghavan

Babu

Sundararajan

et al. 2005

International Journal of Heat and Mass Transfer

Self Cite

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“…Nevertheless, there exist certain conditions, where the length scales (and corresponding Grashof numbers) are considerably reduced-for example, a micronsized droplet burning in an environment of increased oxygen concentration (which keeps flame sizes small)-that favors the spherical flame shape. [23][24][25][26] . The FSP process involves atomization of the precursor/solvent into micron-sized droplets using oxygen as dispersion gas.…”

Section: Introductionmentioning

confidence: 98%

Disruptive burning of precursor/solvent droplets in flame‐spray synthesis of nanoparticles

et al. 2013

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Flame spray pyrolysis is an established technique for synthesizing nanoparticles in the gas phase through aerosol combustion of precursor/solvent droplets. The combustion characteristics of isolated micron-sized precursor/solvent droplets are investigated experimentally. Pure solvent droplets burn uniformly and classically quasisteady, whereas precursor/ solvent droplets manifest disruptive combustion behavior. The fast onset of droplet disruption, which occurs only for solutions with dissolved metal precursors, is not due to solid-particle precipitation within the droplet. Instead, the mechanism of disruptive droplet burning is similar to that of slurry droplets, consisting of three main steps: (1) diffusioncontrolled burning of the high-volatile solvent, (2) viscous-shell formation due to decomposition of the low-volatile metal precursor, and (3) subsequent disruption due to heterogeneous nucleation. The time sequence of the three steps depends on the concentration and decomposition characteristics of the metal precursor, shortening with increased concentration and higher incremental decomposition temperature.

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“…Verification of the quasi-steady models has been carried out using the porous sphere experiment technique [7,8]. The effect of a convective flow field on the rate of burning of liquid droplets has been investigated by several authors in the past [9][10][11][12]. The existence of an envelope diffusion flame was assumed in these studies.…”

Section: Introductionmentioning

confidence: 99%