2025/09/18 by Jeffrey D. Engerer, Engerer, Jeffrey D., Lincoln Collins +1
Chemistry · Earth and Planetary Sciences · Engineering · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Fuel Cells and Related Materials #Petroleum Processing and Analysis #nanoparticles nucleation surface interactions
paper · pdf · doi:10.48550/arxiv.2509.15427
openalex publication_date 2025/09/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Traditional ablation thermochemistry tables for atmospheric entry are derived from boundary-layer element diffusion assuming homogeneous and heterogeneous thermochemical equilibrium at the vehicle surface. Prior techniques for finite-rate surface reactions predominantly embed specific heterogeneous reaction models within the homogeneous equilibrium solution procedures and tables. This paper disseminates a boundary-layer integral solution for wall-gas free oxygen coupled to finite-rate surface kinetics. Solutions are pre-tabulated along normalized kinetics variables without direct integration into an equilibrium thermochemistry solver. This technique allows greater flexibility in presumed kinetics rates and wall-gas conditions in simple air-carbon systems, but the extensibility to state-of-the-art simulations and complex materials remains uncertain. A derivation and preliminary results are presented to the encourage further development.