Modeling of Black PMMA in the NIST Gasification Apparatus using Fire Dynamics Simulator

Published

October 20, 2023

Author(s)

Jason Floyd, Morgan Bruns, Isaac Leventon, Kevin B. McGrattan

Abstract

12 This poster presents Fire Dynamics Simulator (FDS) simulations of anerobic, PMMA, gasification tests 13 performed by the National Institute of Standards and Technology for MaCFP-3. 14 Five sets of simulations where performed: 15 1. Simulations of an inert sample were performed to determine the effective heat transfer coefficient for 16 the gasification apparatus. 17 2. Simulations of two, 50 kW/m2, PMMA gasification tests (one test measuring mass loss and one test 18 measuring temperature) were performed to investigate the sensitivity of results to the level of detail of 19 the applied flux included in the simulation. 20 3. Simulations of all material property sets contained in the MaCFP github repository for PMMA for a 21 single 50 kW/m2 mass loss test. 22 4. A repeat of the third set where the impact of including the blowing effect on the heat transfer coefficient 23 was examined. 24 5. Simulations of all PMMA gasification tests using the NIST-StMU 2023 material property data set 25 contained in the MaCFP github repository for PMMA. 26 Significant observations of the four sets of simulations were: 27 1. The effective heat transfer coefficient was 13.5 W/(m·K). 28 2. Including temporal and spatial details of the applied heat flux did not have a significant effect on results. 29 3. Pre-gasification test property sets had errors in PMMA burnout time ranging from 2 % to 36 %. 30 Property sets following recalibration efforts had errors ranging from 2 to 5 %. 31 4. For the gasification apparatus, the blowing effect did not have a significant effect on the results. 32 5. Burnout time was well predicted (2 % error); however, there was a maximum deviation in remaining 33 mass of 7 to 8 % of the original sample mass.

Proceedings Title

IAFSS14

Conference Dates

October 21-27, 2023

Conference Location

Tsukuba, JP

Pub Type

Conferences

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Keywords

pyrolysis, modeling, PMMA

Citation

Floyd, J. , Bruns, M. , Leventon, I. and McGrattan, K. (2023), Modeling of Black PMMA in the NIST Gasification Apparatus using Fire Dynamics Simulator, IAFSS14, Tsukuba, JP, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956809 (Accessed September 11, 2024)