在基于素的发泡前体树脂中对泡上升行为的数值模拟
Lan Huang1,2, Haizhu Wu1,2, Wenbin Yuan1,2
1Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming, 650224, China.
Heliyon
|November 25, 2024
概括
这项研究使用流体体积 (VOF) 模型来模拟基于素的树脂中的泡动态. 更高的粘度和表面张力降低了泡上升速度,而更大的泡半径增加了它.
科学领域:
- 材料科学 材料科学 材料科学
- 流体动力学 流体动力学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 了解泡动力学对于优化树脂等材料的泡过程至关重要.
- 气泡的行为,包括它们的升起,变形和凝聚,受流体特性和初始条件的影响.
研究的目的:
- 开发和利用一个二维流体体积 (VOF) 模型来模拟气泡变形,上升速度,距离和轨迹.
- 研究树脂性质 (粘度,表面张力) 和气泡特性 (初始半径,位置) 对气泡行为的影响.
- 分析树脂中平行和同轴双泡的凝聚.
主要方法:
- 开发一个二维流体体积 (VOF) 模型.
- 模拟单个和双个泡 (并行和同轴) 动力学在以素为基础的发泡前体树脂.
- 树脂粘度,表面张力,初始泡半径,位置和泡间距离的系统变化.
主要成果:
- 树脂粘度增加导致气泡上升速度降低,流速降低.
- 升高的表面张力阻碍了气泡形状的变形.
- 较大的初始气泡半径导致了更快的上升速度.
- 对于平行双泡,对称性和旋相互作用影响了它们的分歧和合并.
- 对于同轴双泡,更近的距离和更大的半径加速了聚变时间.
结论:
- 基树脂中的泡动力学受到流体粘度,表面张力和泡大小的显著影响.
- 泡泡间的距离在平行和同轴两种配置中都极大地影响凝聚态的行为.
- 这些发现为控制泡在发泡过程中的增长速度提供了洞察力.
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