Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Snap shots of the instantaneous voidage at two different time for three mesh resolution

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Time-averaged coal volume fraction (left) and its standard deviation (right) at three different grid resolutions

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Time-averaged sand volume fraction (left) and its standard deviation (right) at three different grid resolutions

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Frequency spectrum of CO mole fraction at three grid resolutions

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Instantaneous contours of voidage (a), steam mass fraction (b), CO2 mass fractions (c), steam gasification reaction rates (d), and CO2 gasification reaction rate (e)

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: H2 behavior as a function of steam to oxygen ratio and multiplier to pre-exponent kinetic constant in gasification reaction model: (a) Ψ = 35, (b) Ψ = 18, and (c) Ψ = 9

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Posterior distribution of the multiplier to gasification rate, after Bayesian calibration

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: CO mole fraction predictions for calibrated and uncalibrated gasification reaction rate

Date of download: 1/6/2018 Copyright © ASME. All rights reserved. From: The Effect of Grid Resolution and Reaction Models in Simulation of a Fluidized Bed Gasifier Through Nonintrusive Uncertainty Quantification Techniques J. Verif. Valid. Uncert. 2017;1(4):041004-041004-9. doi:10.1115/1.4035445 Figure Legend: Variance of the global sensitivity of A: gasification reaction model, B: CO oxidation model, C: water gas shift reaction model, D: char oxidation model, and E: bed temperature