Peer-reviewed veterinary case report
How biomimetic grooves improve heat transfer and reduce flow
By Wang K et al.·2026·School of Mechanical and Electric Engineering, China·View original on Europe PMC →
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Original publication title: Synergistic Effects of Biomimetic Structures on Heat Transfer Enhancement and Flow Resistance Reduction.
Plain-English summary
This study looked at how certain surface designs inspired by nature can improve heat transfer and reduce resistance in a rectangular channel. Researchers created a detailed computer model to test these designs and found that they worked well in matching real-life results for temperature and pressure. They discovered that the depth of grooves on the surface affected how well the fluid flowed and transferred heat, with deeper grooves sometimes causing problems like increased pressure loss. The best results came from grooves that were about 0.6 mm deep, which balanced better heat transfer with manageable flow resistance. Overall, the study suggests that these nature-inspired designs could help create more efficient heat exchangers.
Abstract
This study numerically investigated the thermal performance of a rectangular channel incorporating scale-inspired biomimetic protrusion structures with micro-grooves on their surfaces. A three-dimensional numerical model was established and validated against experimental data under identical geometric parameters and boundary conditions, demonstrating good agreement in terms of outlet temperature and pressure drop over a wide range of Reynolds numbers. The effects of groove depth on friction factor, Colburn factor, and overall performance evaluation criterion (PEC) were systematically analyzed to elucidate the underlying flow and heat transfer mechanisms. The results indicated that the introduction of biomimetic grooves significantly modified the flow structure and thermal boundary layer development, thereby enhancing fluid mixing and heat transfer. However, excessive groove depth intensified flow separation and pressure loss, leading to performance deterioration. An optimal groove depth of 0.6 mm (approximately 40% of the fin height) was identified, which achieved the best balance between heat transfer enhancement and flow resistance. The findings provide theoretical guidance for the biomimetic surface design of high-efficiency heat exchangers.
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Search related cases →Original publication on Europe PMC: https://europepmc.org/article/MED/41892121