压力延迟透的计算流体动力学建模:面向一个虚拟实验室的透驱动过程模拟
Meisam Mohammadi Amin1, Ulrich Krühne1
1Process and Systems Engineering Centre (PROSYS), Technical University of Denmark (DTU), DK-2800 Lyngby, Denmark.
Membranes
|November 26, 2024
概括
研究人员开发了一种高效的CFD模型,用于模拟透驱动的膜过程,如压力延迟透 (PRO). 该模型准确地预测了水和盐的流量,并考虑了PRO能源采集中的度极化效应.
科学领域:
- 膜科学与技术 膜科学与技术
- 可再生能源系统可再生能源系统
- 计算流体动力学 (CFD) 是一种计算流体动力学.
背景情况:
- 压力延迟透 (PRO) 提供了从盐度梯度中产生清洁能源的潜力.
- 准确的PRO建模需要理解流体流和透流之间的复杂相互作用.
- 现有的模型经常与实际的PRO模块中发现的几何复杂性和流动模式作斗争.
研究的目的:
- 开发一个高效和高保真度的3D计算流体动力学 (CFD) 框架,用于透驱动的膜工艺.
- 通过将CFD与度极化分析解决方案相合,准确地建模透式水流和逆盐流.
- 调查外部 (ECP) 和内部 (ICP) 度偏振对PRO和前导透 (FO) 性能的影响.
主要方法:
- 开发了一种双向合的CFD框架,将ECP的CFD解决方案与ICP的分析模型集成在一起.
- 在膜模块内模拟3D流动,考虑复杂的几何形状和流动模式 (从层状到流).
- 对各种PRO和FO案例研究的实验数据验证了模型.
主要成果:
- 该CFD模型准确地预测了透式水流和逆盐流,捕捉了所有度极化效应.
- 该模型在模拟PRO和FO过程时具有灵活性,比较ECP和ICP的贡献.
- 成功模拟了实验室规模的PRO模块,跨越了广泛的雷诺兹数,从层状流到流.
结论:
- 开发的CFD框架提供了一个强大的,高效的工具,用于模拟透驱动的膜过程的高保真度.
- 该模型准确地考虑了度极化效应,这对于优化PRO中的能量收获至关重要.
- 这种方法使得在不同的操作条件和模块设计下对PRO和FO性能进行全面分析.
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