A nonequilibrium thermal model for rapid heating and pyrolysis of organic composites

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A nonequilibrium heat transfer model is developed to predict the through-thickness transient temperature variation in organic composites subjected to intensive heating. In addition to heat conduction, the model incorporates four important mechanisms: rate-dependent pyrolysis, pyrolysis byproduct outgassing, irradiance-dependent convection heat loss, and radiation heat loss. The heat conduction in the solid part is considered to be one-dimensional, and the compressible gas flow in the pyrolysis region is treated as two-dimensional. Both the shape of the gas flow channel and the gas addition velocity from the channel wall are evaluated based on the decomposition reaction rate. An iterative numerical procedure is formulated to solve the coupled heat transfer and gas flow equations. Numerical results, including the through-thickness temperature transients, the continually changing gas channel, and the pressure distribution in the decomposition gas are obtained and discussed.

Original languageEnglish
Title of host publicationHeat Transfer, Fluid Flows, and Thermal Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages121-127
Number of pages7
ISBN (Print)0791843025, 9780791843024
DOIs
StatePublished - 2008
Externally publishedYes
EventASME International Mechanical Engineering Congress and Exposition, IMECE 2007 - Seattle, WA, United States
Duration: 11 Nov 200715 Nov 2007

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume8 PART A

Conference

ConferenceASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Country/TerritoryUnited States
CitySeattle, WA
Period11/11/0715/11/07

Fingerprint

Dive into the research topics of 'A nonequilibrium thermal model for rapid heating and pyrolysis of organic composites'. Together they form a unique fingerprint.

Cite this