TY - JOUR
T1 - Prediction of gas transport properties through fibrous carbon preform microstructures using Direct Simulation Monte Carlo
AU - Jambunathan, Revathi
AU - Levin, Deborah A.
AU - Borner, Arnaud
AU - Ferguson, Joseph C.
AU - Panerai, Francesco
N1 - Publisher Copyright:
© 2018
PY - 2019/3
Y1 - 2019/3
N2 - We use the Cuda-based Hybrid Approach for Octree Simulations (CHAOS) DSMC solver to predict gas transport coefficients of Morgan felt and FiberForm TPS materials with sample size of (1×1×1) mm3. The detailed velocity flow-field of the pressure-driven flow through these materials is studied to compare the effect of material microstructures on gas transport. It is found that the effective flow path traversed by the gas is more circuitous and longer for FiberForm compared to the more porous felt. The obstruction offered by the material and the circuitous flow path is quantified by the Klinkenberg-derived permeability and hydraulic tortuosity factor, which are key material properties that govern the momentum transport through porous media. We also compute the hydraulic pore diameter of these materials and find that the through-thickness and in-plane pore diameter is equal to 86.94 and 98.7 μm for felt and 36.25 and 60.9 μm for Fiberform, which is within 5–6% of the average pore-size obtained from the tomography images.
AB - We use the Cuda-based Hybrid Approach for Octree Simulations (CHAOS) DSMC solver to predict gas transport coefficients of Morgan felt and FiberForm TPS materials with sample size of (1×1×1) mm3. The detailed velocity flow-field of the pressure-driven flow through these materials is studied to compare the effect of material microstructures on gas transport. It is found that the effective flow path traversed by the gas is more circuitous and longer for FiberForm compared to the more porous felt. The obstruction offered by the material and the circuitous flow path is quantified by the Klinkenberg-derived permeability and hydraulic tortuosity factor, which are key material properties that govern the momentum transport through porous media. We also compute the hydraulic pore diameter of these materials and find that the through-thickness and in-plane pore diameter is equal to 86.94 and 98.7 μm for felt and 36.25 and 60.9 μm for Fiberform, which is within 5–6% of the average pore-size obtained from the tomography images.
KW - DSMC
KW - Hydraulic tortuosity
KW - Klinkenberg permeability
KW - Porous fibrous microstructures
KW - Transport properties
UR - http://www.scopus.com/inward/record.url?scp=85056241721&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056241721&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2018.11.006
DO - 10.1016/j.ijheatmasstransfer.2018.11.006
M3 - Article
AN - SCOPUS:85056241721
SN - 0017-9310
VL - 130
SP - 923
EP - 937
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -