# Thin-film boundary-layer diffusion of non-equilibrium flow to kinetically limited reactive surfaces via Damk\\"ohler thermochemistry tables

Source: [Thin-film boundary-layer diffusion of non-equilibrium flow to kinetically limited reactive surfaces via Damk\\"ohler thermochemistry tables](<https://www.sota2.com/research/paper/68fa4bec1e209131ce94958d>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T08:33:09.712Z

Authors: Jeffrey D. Engerer, Lincoln N. Collins

Published: 2025-09-18T21:07:05.000Z

## Abstract

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.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2509.15427>)

[PDF](<https://arxiv.org/pdf/2509.15427.pdf>)