Journal of Bionic Engineering (2023) 20:2797–2813 https://doi.org/10.1007/s42235-023-00404-3

Bionics?Inspired Structure Boosts Drag and Noise Reduction of Rotating Machinery Shengnan Tang1,4 · Yong Zhu2,3,5,6  · Shouqi Yuan3

Yong Zhu zhuyong@ujs.edu.cn 

1 Institute of Advanced Manufacturing and Modern Equipment Technology, Jiangsu University, Zhenjiang 212013, China 

2 International Shipping Research Institute, GongQing Institute of Science and Technology, Jiujiang 332020, China 

3 National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, Jiangsu, China 

4 Saurer (Changzhou) Textile Machinery Co., Ltd, Changzhou 213200, China 

5 Leo Group Co., Ltd, Wenling 317500, China 

6 Wenling Fluid Machinery Technology Institute of Jiangsu University, Wenling 317525, China

Abstract: As a global concern, environmental protection and energy conservation have attracted signifcant attention. Due to the large carbon emission of electricity, promoting green and low-carbon transformation of the power industry via the synergistic development of clean energy sources is essential. Rotating machinery plays a crucial role in pumped storage, hydropower generation, and nuclear power generation. Inspired by bionics, non-smooth features of creatures in nature have been introduced into the structure design of efcient rotating machines. First, the concept and classifcation of bionics are described. Then, the representative applications of non-smooth surface bionic structures in rotating machineries are systematically and comprehensively reviewed, such as groove structure, pit structure, and other non-smooth surfaces. Finally, conclusions are drawn and future directions are presented. The efective design of a bionic structure contributes toward noise reduction, drag reduction and efciency improvement of rotating machineries. Green and ecological rotating machinery will remarkably reduce energy consumption and contribute to the realization of the “double carbon” goal. 

Keywords: Bionics · Rotating machinery · Non-smooth surface · Pit structure · Groove structure