Materials design for hypersonics

AB Peters, D Zhang, S Chen, C Ott, C Oses… - Nature …, 2024 - nature.com
Hypersonic vehicles must withstand extreme conditions during flights that exceed five times
the speed of sound. These systems have the potential to facilitate rapid access to space …

Heat transfer with interface effects in high-enthalpy and high-speed flow: Modelling review and recent progress

X Yang, G **ao, Y Du, L Liu, D Wei, Y Gui - Applied Thermal Engineering, 2021 - Elsevier
Aerodynamics, aerothermodynamics and thermal protection system response in high-
enthalpy and high-speed flow is heat transfer with interface effects in nature. Modelling and …

High-temperature oxidation of carbon fiber and char by molecular dynamics simulation

L Shi, M Sessim, MR Tonks, SR Phillpot - Carbon, 2021 - Elsevier
Reactive molecular dynamics (MD) simulations are performed to study the initial stage of the
oxidation of carbon fiber and amorphous carbon char with atomic oxygen at temperatures …

Gas concentration in rarefied flows: Experiments and modeling

C Xu, VJ Murray, MD Pilinski… - Aerospace Science and …, 2023 - Elsevier
The relationship between gas-surface scattering dynamics and flow through conical systems
in the rarefied regime has been explored with experimental and computational tools …

Characterization of directional and anisotropic scattering dependency of emissivity for fibrous heat shields under non-isothermal conditions

AH Yassin, SJ Poovathingal - International Journal of Heat and Mass …, 2024 - Elsevier
The spectral and directional dependence of emissivity along with radiative emissions of
scattering media has been characterized as functions of the optical thickness, scattering …

Development of a supervised learning model to predict length scale dependent permeability of porous carbon composites

VBM Ramu, L Chacon, SJ Poovathingal - Transport in Porous Media, 2023 - Springer
Predicting permeability over a wide range of thermodynamic and geometric conditions is
necessary to understand the transport of fluid through porous materials. Permeability is …

A novel framework for modeling hydrogen convection-diffusion-heat-reaction coupling transport in evolving three dimensional porous fibrous materials across rarefied …

H Wang, B Lai, Y Yin, F Qin, Z Qu - International Journal of Hydrogen …, 2024 - Elsevier
Gas catalytic reaction in porous materials is integral to the chemical industry. A novel
reactive direct simulation Monte Carlo model is proposed to investigate the hydrogen gas …

Evaluating two stages of silicone-containing arylene resin oxidation via experiment and molecular simulation

J Cai, Q Huang, H Chen, T Zhang, B Niu… - Chinese Journal of …, 2024 - Elsevier
Silicon-containing aryl acetylene resin (PSA) is a new type of high-temperature resistant
resin with excellent oxidation resistance, whereas antioxidant reaction mechanism of PSA …

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 …

Radiative coefficients and their influence on in-depth heating of porous ablators

A Banerjee, AH Yassin, RSC Davuluri, A Martin… - AIAA Journal, 2022 - arc.aiaa.org
High entry speeds and exotic planetary gases can result in significant radiative heat loads
on space capsules. The mechanism behind the transport of radiative signatures is …