September 10, 2025Physics of Fluids

Fractal modeling and numerical simulation of ablative surfaces under non-uniform diffusion in carbon fiber materials

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Ablation modeling shows that non-uniform pore distribution significantly affects diffusion accuracy.
Errors in traditional models can overestimate the diffusion coefficient by 1.8 times compared to the fractal model.
The study employs fractal theory to reconstruct rough ablation surfaces during atmospheric reentry.
Using the direct simulation Monte Carlo method enhances efficiency in simulating the ablation process with mesoscale roughness.

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Fractal theory reveals the critical role of pore distribution in ablative thermal protection systems, suggesting improved diffusion modeling.

Fan et al. (2025) studied this question.

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Fractal theory reveals the critical role of pore distribution in ablative thermal protection systems, suggesting improved diffusion modeling.