Extension of SPH to simulate non-isothermal free surface flows during the injection molding process

Xu, Xiaoyang1,2; Yu, Peng3

2019-09

10.1016/j.apm.2019.02.048

APPLIED MATHEMATICAL MODELLING   影响因子和分区

0307-904X

1872-8480

This article presents an extension of smoothed particle hydrodynamics (SPH) to non-isothermal free surface flows during the injection molding process. Specifically, we use the method presented by Xu and Yu, Appl. Math. Model. 48 (2017) pp. 384-409, in which the corrected kernel gradient is implemented to increase the computational accuracy and the Rusanov flux is introduced into the continuity equation to alleviate large and random pressure oscillations. To model non-isothermal free surface flows, a working SPH discretization of the temperature equation is derived. An enhanced treatment of the wall boundary is further developed, which can model arbitrary-shaped mold walls. The proposed SPH method is first validated by solving non-isothermal Couette flow and non-isothermal injection molding of a circular disc with a core and comparing the SPH results with those obtained by other numerical methods or experiments. We then extend the numerical method to non-isothermal injection molding of F-shaped and N-shaped cavities. The convergence of the method is examined with several different particle sizes. The effects of the operating conditions (e.g., injection temperature, temperature of the mold wall, and injection velocity) on the flow behavior are analyzed. All the results illustrate that the present SPH method is a powerful computational tool for simulations of non-isothermal free surface flows during the injection molding process. (C) 2019 Elsevier Inc. All rights reserved.

Smoothed particle hydrodynamics Free surface flows Non-isothermal Injection molding Numerical simulation

SCI ; EI

英语

其他

Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund[U1501501]

Engineering ; Mathematics ; Mechanics

Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications ; Mechanics

WOS:000472129000040

ELSEVIER SCIENCE INC

20191906895270

Computer simulation ; Hydrodynamics ; Isotherms ; Molds ; Numerical methods

Computer Applications:723.5 ; Numerical Methods:921.6

ENGINEERING

Web of Science

1.Xian Univ Sci & Technol, Sch Comp Sci & Technol, Xian 710054, Shaanxi, Peoples R China
2.Shaanxi Univ Technol, Sch Math & Comp Sci, Hanzhong 723000, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China

Xu, Xiaoyang,Yu, Peng. Extension of SPH to simulate non-isothermal free surface flows during the injection molding process[J]. APPLIED MATHEMATICAL MODELLING,2019,73:715-731.

Xu, Xiaoyang,&Yu, Peng.(2019).Extension of SPH to simulate non-isothermal free surface flows during the injection molding process.APPLIED MATHEMATICAL MODELLING,73,715-731.

Xu, Xiaoyang,et al."Extension of SPH to simulate non-isothermal free surface flows during the injection molding process".APPLIED MATHEMATICAL MODELLING 73(2019):715-731.