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stephen_pearson
Community Trekker

Modelling Self-heating Solids

Slides to accompany my UK User Group 2019 Presentation:

 

Many materials slowly oxidise with time which generates heat. If the material is in a bulk form (such as during storage or transport) then heat generation can exceed heat loss which leads to ignition of the material.

Laboratory tests are well established but are time consuming and can require large volumes of test material which are not always available. The physics of the process is well described and can be simulated provided all the material properties are known.

Can these two approaches be combined? Given the measured material properties and results of laboratory thermal stability tests how certain are the unknown material properties, such as Activation Energy, which are key to predicting the stability at real world scales?

JMP was used to generate an experimental design, control the simulation software, fit the results, build meta-models and simulate the outcome for new materials.

Keywords: thermal stability; Thomas approximation; JMP; COMSOL Multiphysics; space filling; meta-model;

Comments
Craige_Hales

I've heard stories about piles of saw mill waste, left in the weather, rotting from the inside at temperatures high enough to catch fire when someone digs too deep and lets fresh air in.

latimes 1994 story

 

Good use of RunProgram too!

cgarza99

Nice work

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