Experimental investigation on the validity of the local thermal equilibrium assumption in ablative-material response models

S Liu, A Ahmadi-Senichault, C Levet… - Aerospace Science and …, 2023 - Elsevier
Abstract Thermal Protection Systems (TPS) material response models rely on the
assumption of local thermal equilibrium (LTE) between the solid phase and the gas phase …

Carbon bed post-plasma to enhance the CO2 conversion and remove O2 from the product stream

F Girard-Sahun, O Biondo, G Trenchev… - Chemical Engineering …, 2022 - Elsevier
CO 2 conversion by plasma technology is gaining increasing interest. We present a carbon
(charcoal) bed placed after a Gliding Arc Plasmatron (GAP) reactor, to enhance the CO 2 …

Heat transfer and pyrolysis gas flow characteristics of light-weight ablative thermal protection system in the blunt body

C Ding, X Liu, F Xie, C Du, Y Wang - International Journal of Thermal …, 2023 - Elsevier
Thermal protection system (TPS) is the critical system to protect the structure and electronic
components of hypersonic vehicles from aerodynamic heating. Since the blunt body suffers …

Effective permeability of carbon composites under reentry conditions

SJ Poovathingal, BM Soto, C Brewer - AIAA Journal, 2022 - arc.aiaa.org
Effective permeability of a porous carbon composite used as thermal protection system on
space capsules is computed using the direct simulation Monte Carlo technique. The …

[HTML][HTML] The imaging resolution and Knudsen effect on the mass transport of shale gas assisted by multi-length scale X-ray computed tomography

F Iacoviello, X Lu, TM Mitchell, DJL Brett… - Scientific Reports, 2019 - nature.com
The spatial resolution of 3D imaging techniques is often balanced by the achievable field of
view. Since pore size in shales spans more than two orders of magnitude, a compromise …

Continuum to rarefied diffusive tortuosity factors in porous media from X-ray microtomography

JC Ferguson, A Borner, F Panerai, S Close… - Computational Materials …, 2022 - Elsevier
The diffusive tortuosity factor of a porous media quantifies the material's resistance to
diffusion, an important component of modeling flows in porous structures at the macroscale …

Gas–surface interactions in lightweight fibrous carbon materials

KS Gopalan, A Borner, JC Ferguson, F Panerai… - Computational Materials …, 2022 - Elsevier
We investigate reactive and non-reactive scattering of hyperthermal beam of gas particles
within highly porous carbon-fiber preform using particle-based numerical simulations. High …

[HTML][HTML] Direct Simulation Monte Carlo investigation of fluid characteristics and gas transport in porous microchannels

V Shariati, MH Ahmadian, E Roohi - Scientific reports, 2019 - nature.com
The impetus of the current research is to use the direct simulation Monte Carlo (DSMC)
algorithm to investigate fluid behaviour and gas transport in porous microchannels. Here, we …

A supervised learning model to predict length-scale dependent permeability of porous carbon composites

L Chacon, VB Mohan Ramu… - AIAA Aviation 2022 …, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-4007. vid Permeability of a porous
material is computed using direct simulation Monte Carlo (DSMC) technique. The …

Inversion in binary gas mixtures in rarefied flow conditions: Direct simulation Monte Carlo solution and comparison with the analytical solutions at free molecular …

M Sabouri, E Roohi - Physics of Fluids, 2023 - pubs.aip.org
This paper analyzes the mixing of gases in a plane channel at rarefied conditions. The direct
simulation Monte Carlo method is employed to simulate gas mixing in parallel mixers …