在多相晶格博尔兹曼模型中对接口物理的更高阶调整
Matteo Lulli1, Emily S C Ching1
1The Chinese University of Hong Kong, Department of Physics, Shatin, Hong Kong, China.
这项研究引入了一种新方法,通过调整多相流体模拟中的表面张力和托尔曼长度来准确地建模流体接口. 这提高了在相变流体动力学中核化速率的预测.
科学领域:
- 计算流体动力学 计算流体动力学
- 多相流量建模多相流量建模
- 热力学是一种热力学.
背景情况:
- 多相流的准确建模需要精确的接口属性调整.
- 表面张力和托尔曼长度对于核化速率估计至关重要.
- 现有的格子博尔兹曼方法经常忽略托尔曼长度.
研究的目的:
- 开发一种用于调整多相模型中接口属性的新方法.
- 为了将托尔曼长度纳入格子博尔兹曼模拟中.
- 为了提高相变流体动力学建模的可靠性.
主要方法:
- 利用Shan-Chen多相模型的强制式模板.
- 使用格子压力张量来确定更高阶导数项的系数.
- 执行水静态和动态模拟.
主要成果:
- 在恒定的接口宽度和密度比率下成功调整了表面张力和托尔曼长度系数.
- 证明了同质核化速率对托尔曼长度的依赖.
- 通过模拟验证了方法.
结论:
- 拟议的方法为相变流体动力学的高准确度建模提供了一个新的工具.
- 与现有策略的整合可以进一步推进多相流体模拟.
- 准确包含托尔曼长度对于预测核化现象至关重要.
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