@Article{cmes.2011.074.247,
AUTHOR = {Qiang  Li, Jie  Ouyang, Xuejuan  Li, Guorong  Wu, Binxin  Yang},
TITLE = {Numerical Simulation of Gas-assisted Injection Molding Process for A Door Handle},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {74},
YEAR = {2011},
NUMBER = {3&4},
PAGES = {247--268},
URL = {http://www.techscience.com/CMES/v74n3&4/26799},
ISSN = {1526-1506},
ABSTRACT = {A unified mathematical model is proposed to predict the short shot, primary and secondary gas penetration phenomenon in gas-assisted injection molding (GAIM) process, where the Cross-WLF model and two-domain modified Tait equation are employed to simulate the melt viscosity and density in the whole process, respectively. The governing equations of two-phase flows including gas, air and polymer melt are solved using finite volume method with SIMPLEC technology. At first, two kinds of U-shaped gas channels are modeled, where the shape corner and generous corner cases are studied. At last, as a case study, the short shot, primary and secondary gas penetration processes of a door handle are simulated. The numerical results show that the mathematical model can successfully depict the race-tracking and corner effects, which are very helpful for the design of GAIM.},
DOI = {10.3970/cmes.2011.074.247}
}