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The process of cavity filling including the fountain flow in injection molding
Author(s) -
Gogos Costas G.,
Huang ChiehFong,
Schmidt Larry R.
Publication year - 1986
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760262016
Subject(s) - fountain , materials science , isothermal process , mechanics , flow (mathematics) , molding (decorative) , compressibility , transfer molding , work (physics) , isothermal flow , front (military) , computer simulation , mold , thermodynamics , composite material , mechanical engineering , open channel flow , physics , engineering , archaeology , history
This work deals with the simulation of the filling of a cavity utilizing the Marker‐and‐Cell numerical technique in solving the transient problem involved. The cavity is confined by two parallel plates, and is “end fed.” The flow was assumed isothermal and the fluid incompressible, obeying the power law model. Special attention was given to the flow region near the advancing melt front, in order to obtain a better insight of the “fountain effect,” during which the fluid flows from the center to the walls of the cavity. The results of the simulation of the front flow region are supported by and in qualitative agreement with experimental results involving “tracer resins” during cavity filling. Although the flows considered were slow and isothermal, this study has significant practical ramifications on industrial mold filling during injection molding.