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July 29, 2026Case Studies in Thermal EngineeringOpen Access

Experimental investigation of spray cooling heat transfer on vibrating micropillar surfaces

Yuqi Qian Enting Zha Cheng Peng Yao Qiao Meng Zhang Xinwen Chen

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Key Points

This study aims to clarify how micropillar parameters affect spray cooling heat transfer under vibration conditions.
Developed a spray cooling experimental rig with replaceable micropillar surfaces under vibration conditions.
Investigated the effects of micropillar side length, height, and spacing on critical heat flux (CHF) and heat transfer enhancement.
Conducted tests at varying vibration Reynolds numbers to assess heat transfer performance.
CHF showed a non-monotonic trend with vibration Reynolds number, first increasing then decreasing.
At Re=1600, the maximum CHF at a micropillar side length of 2.0 mm was 8.8% higher than at 0.5 mm.
Empirical correlations for CHF were developed, with mean absolute errors of 6.5%, 6.6%, and 5.3% for different conditions.

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Implication

Experimental investigation of spray cooling heat transfer performance in high heat flux environments under vibration.

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Cite This Study

Qian et al. (2026) studied this question.

synapsesocial.com/papers/6a6d97eae258b358b3c6ab39 https://doi.org/10.1016/j.csite.2026.108393

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