Simulations of post-filling process considering the cooling effect of the mold cooling systems |
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Authors: | Shia-Chung Chen and Nien-Tien Cheng |
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Affiliation: | Chung Yuan University Department of Mechanical Engineering, Chung-Li 32023, Taiwan, Republic of China |
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Abstract: | Simulation of the post-filling process has been developed and performed to study the compressible polymer melt flow during the packing phase and the pressure development inside the mold cavity for the entire post-filling process. A mixed finite-element/finite-difference numerical scheme is implemented to solve the non-isothermal, compressible viscous flow equations. The transient, non-isothermal mold cavity surface temperatures which depend on the mold cooling channel arrangement and coolant flow conditions are also incorporated during simulation using hybrid finite-element/shape-factor method. It has been found that the difference in the pressure profile variation during the post-filling stage is quite distinguished for cases assuming constant mold wall temperature and cases with the consideration of the cooling effect of the cooling system configuration. |
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