In Liquid Composite Molding (LCM) processes, a fabric reinforcement is placed in a closed cavity and resin is injected into the mold. Almost all reinforcements are dual scale containing fiber tows, which fill at a different rate than the region in between the fiber tows. Simulation of LCM processes can help identify regions that fail to fill. However, the presence of dual scale flow is usually neglected. Here this phenomenon is modeled using Liquid Injection Molding Simulation (LIMS) software in which a complex network of one-dimensional elements is created. This allowed us to simulate transverse and longitudinal flow through the fiber tows taking into consideration the orientation and architecture of the reinforcement and, additionally, adding capillary effects to the model. A sensitivity study has been performed to investigate the effects of properties in non-dimensional form, allowing for comparison with experiments that were conducted to validate the model by visualization of the flow front position and dual scale area dimensions.

在液态复合成型（LCM）工艺中，将织物增强材料放置在封闭的型腔中，然后将树脂注入模具中。几乎所有的增强材料都是含有纤维垢的双尺度纤维，其填充速率与纤维束之间的区域的填充速率不同。LCM过程的仿真可以帮助识别无法填充的区域。但是，通常会忽略双刻度流的存在。在此，使用液体注射成型仿真（LIMS）软件对这种现象进行建模，在该软件中创建了一维元素的复杂网络。这样，我们就可以在考虑纤维束的方向和结构的情况下模拟通过纤维束的横向和纵向流动，此外，还可以在模型中添加毛细作用。