August 17, 2025

Computational and Experimental Investigation of Discrete “W” Turbulators for sCO2 Turbine Internal Cooling

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A 10% increase in Nusselt number augmentation was achieved using discrete 'W' turbulators compared to angled ribbed designs.
Nusselt number augmentation remains stable with increasing Reynolds number ranging from 100,000 to 300,000, contrary to previous studies with air.
This analysis employed computational fluid dynamics (CFD) alongside experimental methods focusing on sCO2 as the coolant.
The findings highlight the efficiency potential of using discrete 'W' geometries for cooling in supercritical CO2 turbine applications.

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Implication

Experimental analysis shows a 10% increase in Nusselt number with discrete 'W' turbulators for supercritical CO2 cooling, suggesting improved efficiency over traditional methods.

Cite This Study

Grabowski et al. (2025) studied this question.

synapsesocial.com/papers/68c236b2b210217d647753d4 https://doi.org/10.1115/gt2025-151493

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Implication

Experimental analysis shows a 10% increase in Nusselt number with discrete 'W' turbulators for supercritical CO2 cooling, suggesting improved efficiency over traditional methods.

Computational and Experimental Investigation of Discrete “W” Turbulators for sCO2 Turbine Internal Cooling

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Discussion

Implication

Cite This Study

Computational and Experimental Investigation of Discrete “W” Turbulators for sCO2 Turbine Internal Cooling

Key Points

Discussion

Implication

Cite This Study