Chinese Journal of Tissue Engineering Research ›› 2018, Vol. 22 ›› Issue (2): 274-280.doi: 10.3969/j.issn.2095-4344.0018

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Numerical simulation analysis of the internal flow field of a 3D biological printhead based on FLUENT

Liu Dong-fang1, 2, Zhou Ji-ping1, Shi Hong-can3, Xu Xiao-dong2, Jiang Ya-ni2, Zhang Qi1
  

  1. 1College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, Jiangsu Province, China; 2College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, Jiangsu Province, China; 3Medical College of Yangzhou University, Yangzhou 225001, Jiangsu Province, China
  • Received:2017-12-05 Online:2018-01-18 Published:2018-01-18
  • Contact: Zhou Ji-ping, Professor, Doctoral supervisor, College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, Jiangsu Province, China
  • About author:Liu Dong-fang, Studying for master’s degree, College of Mechanical Engineering, Yangzhou University, Yangzhou 225127, Jiangsu Province, China; College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, Jiangsu Province, China
  • Supported by:
     the National Natural Science Foundation of China, No. 81770018

Abstract:

BACKGROUND: With the development of 3D printing technology, organ and tissue construction can be achieved by constructing a three-dimensional scaffold that is conducive to cell growth.
OBJECTIVE: To solve the scaffold over-accumulation during 3D printing.
METHODS: Fluent, a finite element analysis software developed by ANSYS Company in the United States, was used to analyze the extrusion process of print heads and to obtain suitable viscosity and extrusion pressure of materials for the 3D printing of cellulose gel composites. We then compared simulation results with experimental results.
RESULTS AND CONCLUSION: The error between simulation results and experimental results was less than 5%. The simulated values at a kinetic viscosity of 45 and a pressure of 0.10-0.12 MPa solved the phenomenon of over-accumulation of cellulose gel composites during the 3D printing process, ensuring enough space for the 3D printed scaffold.

Key words: Stents, Gels, Viscosity, Tissue Engineering

CLC Number: