Miscibility-immiscibility conundrum in air-liquid-vapor flow modeling: Bridging the gap by using the phase-field method

空气-液体-蒸汽流建模中的混溶性与不混溶性难题：使用相场方法弥合差距

• 批准号: 1805817
• 负责人: Hector Gomez
• 金额: $ 35.97万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1805817&HistoricalAwards=false
• 关键词: Miscibility; immiscibility; conundrum; air; liquid

Mixtures of air, liquid water, and water vapor are ubiquitous in nature and in engineering processes. These mixtures occur in energy generation, transport of marine vehicles, inhalation drug therapies, and in cloud formation in the atmosphere. Currently, there is no general theory to describe the fluid dynamics behavior of these mixtures, which limits a wide range of scientific and technological advances. This research will develop a first-principles-based computational model that will provide a theoretical framework for understanding the physics of air, liquid water, and water vapor mixtures. The investigators will use highly controlled experiments to provide physical insights and validate the computational method. This research will deliver interdisciplinary advancements at the interface of engineering, mathematics, and physics. The research broader impacts will be complemented by outreach and educational activities. These include an initiative to reshape the way fluid mechanics is introduced to undergraduate students and recruiting and retention activities for groups that are underrepresented in STEM fields.Multiphase flow dynamics has received significant attention from the scientific community due to the captivating physics produced by the interplay of miscibility, inertial forces, viscous forces, and surface tension. While there has been significant progress in understanding single-component, two-phase flows (e.g., vaporization and condensation of a single chemical species), and single-phase, two-component flows (for example, bubbly flows composed of air and water), the dynamics of flows involving simultaneously two phases and two components are not well understood. This project will develop a new first-principles-based computational model that captures all physical factors relevant to air, liquid water, and water vapor flows. The model will be validated through state-of-the-art experiments monitoring the interface dynamics, velocity and pressure fields in three dimensions. The model will be based on the phase-field theory that allows a natural transition between miscible (air and water vapor) and immiscible (air and liquid water) mixtures, providing an ideal enabling theoretical framework. The integrated computational and experimental research to be developed in this project promises to constitute a leap forward in our ability to investigate flows involving air, liquid water, and water vapor and will provide the enabling tools for transformative advances across numerous engineering and science applications.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

空气、液态水和水蒸气的混合物在自然界和工程过程中普遍存在。 这些混合物出现在能源生产、海上交通工具的运输、吸入药物治疗和大气中的云形成中。 目前，还没有通用的理论来描述这些混合物的流体动力学行为，这限制了广泛的科学和技术进步。这项研究将开发一个基于第一性原理的计算模型，为理解空气、液态水和水蒸气混合物的物理学提供一个理论框架。研究人员将使用高度受控的实验来提供物理见解并验证计算方法。这项研究将在工程，数学和物理学的接口提供跨学科的进步。将通过外联和教育活动来补充研究的广泛影响。 这些举措包括重塑向本科生介绍流体力学的方式，以及为在STEM领域代表性不足的团体开展招募和保留活动。多相流动力学因其由粘性、惯性力、粘性力和表面张力相互作用产生的迷人物理学而受到科学界的极大关注。虽然在理解单组分两相流（例如，单一化学物质的蒸发和冷凝）和单相、双组分流动（例如，由空气和水组成的泡状流动），同时涉及两相和两组分的流动的动力学还没有很好地理解。该项目将开发一个新的基于第一性原理的计算模型，该模型将捕获与空气，液态水和水蒸气流动相关的所有物理因素。该模型将通过监测三维界面动力学、速度和压力场的最先进实验进行验证。该模型将基于相场理论，该理论允许混溶（空气和水蒸气）和不混溶（空气和液态水）混合物之间的自然过渡，提供了一个理想的理论框架。在这个项目中开发的综合计算和实验研究有望在我们研究涉及空气，液态水，该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值和更广泛的影响审查标准。

项目成果

Understanding how non-condensable gases modify cavitation mass transfer through the van der Waals theory of capillarity

了解不凝性气体如何通过毛细管现象的范德华理论改变空化传质

• DOI: 10.1063/5.0021697
• 发表时间: 2020
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Mukherjee, Saikat;Gomez, Hector
• 通讯作者: Gomez, Hector

Effect of dissolved gas on the tensile strength of water

溶解气体对水拉伸强度的影响

• DOI: 10.1063/5.0131165
• 发表时间: 2022
• 期刊: Physics of Fluids
• 影响因子: 4.6
• 作者: Mukherjee, Saikat;Gomez, Hector
• 通讯作者: Gomez, Hector

Stabilized formulation for phase-transforming flows with special emphasis on cavitation inception

• DOI: 10.1016/j.cma.2023.116228
• 发表时间: 2023-10
• 期刊: Computer Methods in Applied Mechanics and Engineering
• 影响因子: 7.2
• 作者: S. Mukherjee;Hector Gomez

A novel method to impose boundary conditions for higher-order partial differential equations

一种为高阶偏微分方程施加边界条件的新方法

• DOI: 10.1016/j.cma.2021.114526
• 发表时间: 2022
• 期刊: Computer Methods in Applied Mechanics and Engineering
• 影响因子: 7.2
• 作者: Hu, Tianyi;Leng, Yu;Gomez, Hector
• 通讯作者: Gomez, Hector

Flow and mixing dynamics of phase-transforming multicomponent fluids

相变多组分流体的流动和混合动力学

• DOI: 10.1063/1.5109889
• 发表时间: 2019
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Mukherjee, Saikat;Gomez, Hector
• 通讯作者: Gomez, Hector