October 1, 2025

Study of Thermal-Flow and Droplet Dynamics of Passive Sweeping Mist Jet Film Cooling With Different Droplet Wall Boundary Conditions

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Computational simulation reveals mist enhances film cooling effectiveness in gas turbines, suggesting droplet dynamics influence performance.

Adding mist enhanced film cooling effectiveness, with performance improvements of 130% using wall-film droplets.
Uniform 20 μm droplets under wall-film and reflect conditions showed significant cooling improvements over air-only cases.
Computational simulation evaluated different boundary conditions and droplet sizes, including 10 μm and 20 μm variants.
The study indicates important implications for gas turbine cooling strategies, highlighting the effects of droplet dynamics.

Kojidi et al. (2025) studied this question.

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Computational simulation reveals mist enhances film cooling effectiveness in gas turbines, suggesting droplet dynamics influence performance.