吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (04): 970-975.doi: 10.7964/jdxbgxb201304021

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Design and experiment of bionic coupling functional surface caused by dual factors of form and flexible material

TIAN Li-mei1, GAO Zhi-hua1, WANG Yin-ci1, REN Lu-quan1, SHANG Zhen2   

  1. 1. Key Laboratory of Bionic Engineering, Ministry of Education, Changchun 130022,China;
    2. College of Automotive Engineering, Jilin University,Changchun 130022,China
  • Received:2012-09-27 Online:2013-07-01 Published:2013-07-01

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Abstract:

When aquatic creatures move in fluid medium, the elastic deformations of their epidermis vary with the fluid load. The deformations couple with the special non-smooth structures of the subcutaneous tissues under certain conditions to form special coupling function surfaces. Based on the above biological coupling phenomenon and bionics similar principle, a new design concept of dual factors coupling functional surface caused by form and flexible material is proposed. This kind of surface is called Bionic Coupling Functional Surface (BCFS). The BCFS is composed of two layers of materials with different properties. The deformation of the surface layer and the coupling function between surface layer and the subcutaneous layer with non-smooth structure are utilized to actively control the fluid medium and achieve efficiency enhancement. The implementation of the BCFS on typical fluid pump is explored. Experiment results show that with BCFS the pump efficiency is increased by 5%.

Key words: engineering bionics, bionic coupling, efficiency enhancement and drag reduction, pump, functional surface

CLC Number: 

  • TB17

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