A Validation Uncertainty Quantification Analysis of a 1.5 MW Oxy-Coal Fired Furnace

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Title A Validation Uncertainty Quantification Analysis of a 1.5 MW Oxy-Coal Fired Furnace
Creator Diaz-Ibarra, O.
Contributor Spinti, J., Fry, A., Thornock, J.N., Isaac, B., Harris, D., Hradisky, M., Smith, S., Eddings, E., Smith, P.J.
Date 2015-09-11
Spatial Coverage Salt Lake City, Utah
Subject 2015 AFRC Industrial Combustion Symposium
Description Paper from the AFRC 2015 conference titled A Validation Uncertainty Quantification Analysis of a 1.5 MW Oxy-Coal Fired Furnace
Abstract A 1.5 MW pulverized coal-fired furnace at the University of Utah, the L1500, represents one scale in a multiscale Validation/Uncertainty Quantification (V/UQ) study undertaken by the Carbon-Capture Multidisciplinary Simulation Center (CCMSC) (http://ccmsc.utah.edu). This validation process seeks to obtain consistency between all measured and simulated quantities of interest (QOI). This paper discusses the V/UQ process applied to the oxy-fired pulverized coal experiments performed on the L1500 (described in a companion paper). In this study the simulations and measurement campaigns have been coordinated to maximize the information obtained by performing both the simulation and the experiments together and by requiring consistency within the uncertainty of the measurements. This analysis requires quantification of the real uncertainties in the measured QOIs and in the models used to obtain the QOIs in the simulation. For this analysis, the QOI is heat flux (to the wall and to the cooling tubes). To perform the analysis, two simulation parameters were selected that have a first order effect on the QOI: (1) a parameter in the coal devolatilization model and (2) the effective thickness of the furnace wall (assuming an effective thermal conductivity of 1 W/m-K). A suite of six simulations of the L1500 experiment was then performed over the parameter space defined by the uncertainty range of these two parameters. The simulations consisted of two parts. In the first part, the velocity and temperature fields at the exit plane of a low NOx burner equipped with swirl blocks were obtained with the commercial software package StarCCM+. In the second part, the main chamber of the L1500 was simulated with Arches, a Large Eddy Simulation code developed by ICSE researchers that uses the Discrete Quadrature Method of Moments to simulate the solid disperse phase (e.g. coal); the exit plane velocity and temperature fields from the StarCMM+ simulation were used as the boundary condition. The computational domain in Arches had 18.1 millions cells. Each simulation in the test suite required approximately one week of run time on 2808 cores. Upon completion of the simulation suite, a consistency analysis of the simulation and experimental data was performed. This presentation will provide an overview of the methodology, present results from the consistency analysis, and discuss how the analysis was enhanced due to the coordination of experimental and simulation work.
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ARK ark:/87278/s6rr6849
Setname uu_afrc
Date Created 2018-11-29
Date Modified 2018-11-29
ID 1387815
Reference URL https://collections.lib.utah.edu/ark:/87278/s6rr6849