Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scale-Bridging Model Development for Coal Particle Devolatilization   When performing large-scale, high-performance computations of multi-physics
applications, it is common to limit the complexity of physics sub-models
comprising the simulation. For a hierarchical system of coal boiler simulations
a scale-bridging model is constructed to capture characteristics appropriate
for the application-scale from a detailed coal devolatilization model. Such
scale-bridging allows full descriptions of scale-applicable physics, while
functioning at reasonable computational costs. This study presents a variation
on multi-fidelity modeling with a detailed physics model, the chemical
percolation devolatilization model, being used to calibrate a scale-briding
model for the application of interest. The application space provides essential
context for designing the scale-bridging model by defining scales, determining
requirements and weighting desired characteristics. A single kinetic reaction
equation with functional yield model and distributed activation energy is
implemented to act as the scale-bridging model-form. Consistency constraints
are used to locate regions of the scale-bridging model's parameter-space that
are consistent with the uncertainty identified within the detailed model.
Ultimately, the performance of the scale-bridging model with consistent
parameter-sets was assessed against desired characteristics of the detailed
model and found to perform satisfactorily in capturing thermodynamic trends and
kinetic timescales for the desired application-scale. Framing the process of
model-form selection within the context of calibration and uncertainty
quantification allows the credibility of the model to be established.

2
The categories of this paper are: math
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn