2002
DOI: 10.6028/nist.ir.6894
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A numerical model for combustion of bubbling thermoplastic materials in microgravity

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Cited by 15 publications
(18 citation statements)
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“…In frames 837-838 and 872-878, the collapse of a large bubble that covers the entire volume of the liquid phase can be seen. A bubble of this size indicates a high rate of bubble coalescence which forms one large bubble that grows until the internal energy is sufficient to overcome the viscous and surface energy barrier to explode [74,75]. After 260 • C (4E), the liquid phase swelling slows down, indicating a decrease in gas generation and an increase in viscosity by polymerization reactions [24,25].…”
Section: Behavior Of Milled Wood Lignin During Pyrolysismentioning
confidence: 97%
“…In frames 837-838 and 872-878, the collapse of a large bubble that covers the entire volume of the liquid phase can be seen. A bubble of this size indicates a high rate of bubble coalescence which forms one large bubble that grows until the internal energy is sufficient to overcome the viscous and surface energy barrier to explode [74,75]. After 260 • C (4E), the liquid phase swelling slows down, indicating a decrease in gas generation and an increase in viscosity by polymerization reactions [24,25].…”
Section: Behavior Of Milled Wood Lignin During Pyrolysismentioning
confidence: 97%
“…The model predicted a MLR that was approximately constant with time, whereas experimental data showed an increasing mass loss rate. A more recent model [54] includes a more detailed description of bubbling, but the author concludes that a better representation of the bursting process is still needed.…”
Section: Special Topics: Melting Bubbling and Related Phenomenamentioning
confidence: 99%
“…One challenge is simulating the mechanism through which pyrolysate vapors generated in-depth escape from the solid. Although it is usually assumed that the vapors instantaneously escape with no flow resistance, a few studies have included the effect of bubbling, ranging from simplified [48] to detailed [52][53][54] treatments.…”
Section: Comprehensive Pyrolysis Models: Thermoplasticsmentioning
confidence: 99%
“…High-density polyethylene is, by definition, any polyethylene with a solid density of at least 9.41 g/cm 3 . The density of polyethylene melts is around 20 % less than this value.…”
Section: Densitiesmentioning
confidence: 99%
“…For the purposes of comparing their kinetic pyrolysis models to experimental GC-MS data, Faravelli et al [2] developed a simple bubbling loss model. Butler [3] developed models for bubbling in combusting thermoplastic materials and incorporated these models into numerical simulations.…”
Section: Introductionmentioning
confidence: 99%