Integrated Mist-Assisted and Composite Cooling Architectures for Ultra-High-Temperature Gas Turbines: Advances, Multiphysics Modeling, and Future Directions Beyond 2000 K
DOI:
https://doi.org/10.70112/arme-2026.15.1.4334Keywords:
Mist-Assisted Cooling , Gas Turbine Thermal Management , Two-Phase Heat Transfer , Thermal Barrier Coatings , Additive Manufacturing for Cooling , StructuresAbstract
Efficient thermal management is critical to enabling gas turbine operation at increasingly higher inlet temperatures. This review critically examines the integration of mist-assisted cooling with established impingement and film-cooling methods and positions it alongside six emerging innovation pillars: composite cooling architectures, additively manufactured lattice and truss structures, two-phase working fluids (steam/mist and heat pipes), advanced thermal barrier coatings, and surface-modification techniques (dimples and vortex generators). Through a systematic analysis of more than 150 experimental and numerical studies, we identify the dominant variables-droplet loading, size distribution, nozzle geometry, Reynolds number, heat flux, and surface curvature-that govern mist-enhanced heat-transfer performance. We further explore how mist cooling synergizes with passive insulation strategies to extend effective coverage and uniformity under realistic turbine geometries and operating conditions. Finally, we evaluate cutting-edge diagnostic and simulation tools, highlight critical knowledge gaps in droplet dynamics and corrosion resistance, and propose targeted research directions for developing robust, multifunctional cooling solutions capable of sustaining turbine inlet temperatures beyond 2000 K.
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