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August 12, 2026Journal of Turbomachinery

Investigation of a Hybrid Cooling System for the Free-Double-Piston Engine Concept

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Authors

KFKonstantinos FotisVKVasileios KaraiskosZVZinon Vlahostergios

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Overview

Randomized trial investigates hybrid cooling's impact on thermal performance in aviation propulsion, suggesting efficiency improvements.

Key Points

  • This research aims to assess a hybrid cooling strategy for the Free Double Piston Composite-Cycle Engine to improve thermal performance.
  • Introduced a hybrid cooling strategy combining bypass-air convection and liquid-coolant passages.
  • Developed a reduced-order analytical heat-transfer model and a computational thermal model for predictive analysis.
  • Performed parametric investigations under varying cooling configurations and operating conditions.
  • Hybrid cooling significantly lowers peak wall temperatures, demonstrating a reduction in thermal loads.
  • Both models confirm the effectiveness of the cooling strategy across different boundary conditions and geometries.
  • The findings support the integration of hybrid cooling into lightweight thermal-management solutions for next-gen engines.

Cite This Study

Fotis et al. (2026) studied this question.

synapsesocial.com/papers/6a7c20ae06a85aed514b7b3chttps://doi.org/10.1115/1.4072493
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