SIMULATION OF REACTING FLOW DURING FILLING IN REACTION INJECTION-MOLDING (RIM)
SIMULATION OF REACTING FLOW DURING FILLING IN REACTION INJECTION-MOLDING (RIM)
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DOI：
10.1002/pen.760261806
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发表时间：
1986-10-01
影响因子：
3.2
通讯作者：
RICHARDSON, SM
中科院分区：
文献类型：
--
作者：
LEKAKOU, CN;RICHARDSON, SM
本文涉及矩形、圆柱形和圆盘形状型腔反应注射成型 (RIM) 工艺填充阶段的计算机模拟。计算机模型分为两部分：主流和移动前沿流。在主流部分，轴向动量、能量和物质守恒的瞬态方程以及连续性方程通过有限差分法使用移动、变化的网格进行数值求解。在非常新颖的流动前沿部分，瞬态（抛物线）涡度、能量和物质守恒方程以及椭圆流函数方程再次通过有限差分方法求解。这两个部分的一个重要特征是所有瞬态方程中都包含沿流和跨流的对流。给出了所有三种腔形状的结果，并将矩形腔的结果与先前研究人员的实验结果进行了比较。
This paper deals with computer simulation of the filling stage of the Reaction Injection Molding (RIM) process for cavities of rectangular, cylindrical, and disc shapes. The computer model is in two parts: the main flow and the flow by the moving front. In the main flow part, the transient equations of axial momentum, energy and species conservation and also the continuity equation are solved numerically by finite‐difference methods using a moving, changing mesh. In the flow front part, which is quite novel, the transient (parabolic) vorticity, energy and species conservation equations and the elliptic streamfunction equation are again solved by finite‐difference methods. An important feature of both parts is that convection along and across the flow is included in all the transient equations. Results are presented for all three cavity shapes and those for rectangular cavities are compared with the experimental results of previous investigators.