Simulation method for CVI (Chemical Vapor Infiltration) densification process of fiber preform

The invention discloses a simulation method for a CVI densification process of a fiber preform. The simulation method comprises the following steps: acquiring parameters of the fiber preform; constructing a periodically symmetrical unit cell model; performing grid division on a fluid computational d...

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Bibliographic Details
Main Authors YANG CHENG, GUO JUSHANG, WU RENMIN, ZHU LIPING, SUN SHANSHAN
Format Patent
LanguageChinese
English
Published 11.05.2021
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention discloses a simulation method for a CVI densification process of a fiber preform. The simulation method comprises the following steps: acquiring parameters of the fiber preform; constructing a periodically symmetrical unit cell model; performing grid division on a fluid computational domain and a solid computational domain in the unit cell model; discretizing a control equation of a CVI densification process in the unit cell through a finite volume method; loading a program unit in the CFD solver; setting material attributes, chemical reaction and boundary conditions; iteratively solving the discrete control equation, and calculating the time required for completing unit cell filling after convergence; optimizing the unit cell model to repeatedly simulate the pore evolution process of the preform; and visualizing the forming process of the closed holes in the unit cells and the evolution process of the microstructure according to the optimal unit cell model. According to the method, the filling
Bibliography:Application Number: CN202011633443