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Optimizing Bladeless Wind Turbines for Efficient Power Generation

PostPosted:15 Jun 2025 00:22
by peterenlkert
A recent study from the University of Glasgow offers new insights into how bladeless wind turbines (BWTs) can be optimized for greater efficiency, potentially accelerating their adoption as a practical renewable energy solution.

Using advanced computer simulations, engineers investigated how future BWTs could be designed to maximize energy output while maintaining structural integrity. Their findings, published in Renewable Energy under the title "Performance analysis and geometric optimisation of bladeless wind turbines using wake oscillator model," represent a significant step forward for this emerging technology.

Unlike traditional wind turbines, which generate electricity through rotating blades, BWTs harness power via vortex-induced vibration. These slender, cylindrical structures oscillate in response to alternating vortices of wind. When the frequency of these oscillations aligns with the natural resonance of the structure, the motion intensifies and can be converted into electrical energy.

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The team conducted simulations on thousands of BWT configurations to understand the relationship between design variables such as mast height, diameter, power generation, and structural durability in wind speeds ranging from 20 to 70 mph. Their analysis revealed that the most efficient and structurally sound design features an 80 cm mast with a 65 cm diameter—capable of producing up to 460 watts of power. This output significantly surpasses existing real-world prototypes, which typically peak at 100 watts.

Though alternative designs could, in theory, generate up to 600 watts, the simulations showed that such models would compromise structural stability, making them unsuitable for real-world deployment. The study thus highlights a critical trade-off: maximum efficiency doesn’t always coincide with maximum power output.

Dr. Wrik Mallik, a co-author from the James Watt School of Engineering, emphasized this point, noting that the key is to find a balanced design that sustains performance without structural failure. He also underscored the potential of BWTs in urban settings, where traditional turbines are often impractical due to noise, size, or wildlife risks.

Professor Sondipon Adhikari, another corresponding author, hopes these findings will guide industry development of next-generation BWT prototypes. By removing much of the trial-and-error from the design process, the study could help transition BWTs from experimental setups to scalable, utility-grade systems producing over 1 kilowatt of power.

Looking ahead, the research team plans to refine BWT designs further and explore how metamaterials—engineered materials with customized properties—might enhance the turbines’ performance. This work could help establish BWTs as a quieter, safer, and more compact alternative for wind power generation, especially in space-constrained environments.