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September 10, 2025EnergiesOpen Access

Numerical Analysis of Heat Transfer and Flow Characteristics in Porous Media During Phase-Change Process of Transpiration Cooling for Aerospace Thermal Management

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Under low heat flux, capillary action expands the two-phase region, improving cooling efficiency.
High heat flux causes vaporization to limit capillary supply, forming a constricted superheated vapor layer.
Simulations utilize a Two-Phase Mixture Model with a Local Thermal Non-Equilibrium approach for accuracy.
Findings highlight a pressure drop paradox linked to increased flow rate suppressing high-viscosity vapor.

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Numerical analysis reveals effects of phase change and pressure fluctuations in transpiration cooling, indicating impacts on system reliability.

Bae et al. (2025) studied this question.

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Numerical analysis reveals effects of phase change and pressure fluctuations in transpiration cooling, indicating impacts on system reliability.