TY - JOUR
T1 - Experimental measurements of the permeability of fibrous carbon at high-temperature
AU - Panerai, Francesco
AU - White, Jason D.
AU - Cochell, Thomas J.
AU - Schroeder, Olivia M.
AU - Mansour, Nagi N.
AU - Wright, Michael J.
AU - Martin, Alexandre
N1 - Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - A series of experiments was performed to obtain permeability data on FiberForm®, a commercial carbon preform used for manufacturing thermal protection systems. A porous sample was placed in a quartz flow-tube heated by an isothermal furnace. The setup was instrumented to measure mass flow through and pressure drop across the sample. The intrinsic permeability and the Klinkenberg correction, which accounts for rarefied effects, were computed from the experimental data. The role of the gas temperature and pressure on the effective permeability is shown, and it is demonstrated that with proper data reduction, the intrinsic permeability is strictly a function of the micro-structure of the material. A function for the effective permeability of FiberForm, dependent on temperature, pressure, pore geometry, and type of gas is proposed. The intrinsic permeability was evaluated at K0=5.57×10-11 m2, with a Klinkenberg parameter of 8c/dp=2.51×105 m-1 and a reference porosity of φ†=0.87.
AB - A series of experiments was performed to obtain permeability data on FiberForm®, a commercial carbon preform used for manufacturing thermal protection systems. A porous sample was placed in a quartz flow-tube heated by an isothermal furnace. The setup was instrumented to measure mass flow through and pressure drop across the sample. The intrinsic permeability and the Klinkenberg correction, which accounts for rarefied effects, were computed from the experimental data. The role of the gas temperature and pressure on the effective permeability is shown, and it is demonstrated that with proper data reduction, the intrinsic permeability is strictly a function of the micro-structure of the material. A function for the effective permeability of FiberForm, dependent on temperature, pressure, pore geometry, and type of gas is proposed. The intrinsic permeability was evaluated at K0=5.57×10-11 m2, with a Klinkenberg parameter of 8c/dp=2.51×105 m-1 and a reference porosity of φ†=0.87.
KW - Permeability
KW - Porous media
KW - Thermal protection systems
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U2 - 10.1016/j.ijheatmasstransfer.2016.05.016
DO - 10.1016/j.ijheatmasstransfer.2016.05.016
M3 - Article
AN - SCOPUS:84974577054
SN - 0017-9310
VL - 101
SP - 267
EP - 273
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -