Localized buoyant convection in porous media: plumes and dispersion

多孔介质中的局域浮力对流:羽流和弥散

基本信息

  • 批准号:
    RGPIN-2019-04581
  • 负责人:
  • 金额:
    $ 3.35万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2022
  • 资助国家:
    加拿大
  • 起止时间:
    2022-01-01 至 2023-12-31
  • 项目状态:
    已结题

项目摘要

Examples of buoyancy-driven flow abound in nature, industry and everyday life from atmospheric convection to the steam that rises from a hot kettle on the stovetop. Less obvious, but equally important, is buoyancy-driven flow within a porous medium whereby hot/cold fluid navigates through the interstitial spaces between solid grains. Indeed, buoyant convection within porous media is relevant to energy systems e.g. thermal energy storage, methods of enhanced oil recovery such as steam-assisted gravity drainage or cyclic steam stimulation, and the geological sequestration of either carbon dioxide (CO2) or acid-gas (a mixture of CO2 and hydrogen sulfide), which result from the production of electricity and oil. The research proposed here, though fundamental in focus, is motivated most especially by this latter example. To this end, one must define the precise conditions under which the CO2 or acid-gas injected into formation will remain permanently sequestered. Although there are a variety of mechanisms that allow the injectate to become immobilized (capillary trapping, etc.), CO2 and acid-gas are more buoyant than, say, aquifer brine and tend therefore to rise from one geological layer to the next. The competition between immobilization and vertical migration, far from being of purely academic interest, determines whether the large outlays of public and private capital necessary for geological sequestration projects are, in fact, justified. In my research, I will use theory and laboratory experiment to advance our current understanding of buoyant convection in porous media. Three interconnected projects will be pursued. Firstly, I will consider the impingement of a buoyant plume on a sloping interface where the fluid has an easy and difficult time, respectively, flowing through the layers below and above. This mimics a scenario in which a plume of buoyant CO2 or acid-gas strikes a (possibly fractured) cap rock layer having a comparatively small permeability. To this base flow, and consistent with real geophysical scenarios, I will then allow some fraction of the injectate to dissolve into the ambient reservoir fluid. Although the volume of dissolving injectate is small, the impact on the flow dynamics is expected to be large. Finally, and again consistent with real flows, I will then specifically account for the limited miscibility of CO2 or acid-gas in aquifer brine. Doing so requires accounting for surface tension among other effects. Model predictions and measured data may be adapted into basin-scale geological algorithms that lack sufficient resolution to fully describe flow details at fine spatial scales. Instead, parameterizations of the tradeoffs between injectate drainage, advection and dissolution are required. To this end, a broader objective of the research is to collect, interpret and synthesize data in a way that is meaningful to other researchers, industry practitioners, regulators and policy makers.
浮力驱动流动的例子在自然界、工业和日常生活中比比皆是,从大气对流到炉灶上热水壶升起的蒸汽,不太明显但同样重要的是多孔介质内的浮力驱动流动,从而产生热/冷。事实上,多孔介质内的浮力对流与能源系统有关,例如热能储存、提高石油采收率的方法,例如蒸汽辅助重力排水。或循环蒸汽刺激,以及二氧化碳 (CO2) 或酸性气体(二氧化碳和硫化氢的混合物)的地质封存,这是由电力和石油生产产生的。为此,我们必须确定注入地层中的二氧化碳或酸性气体将保持永久封存的精确条件,尽管存在多种允许注入物固定的机制。 (毛细管捕集等)、二氧化碳和酸性气体比含水层盐水更具浮力,因此往往会从一个地质层上升到下一个地质层。固定和垂直迁移之间的竞争远非纯粹的学术兴趣。 ,决定了地质封存项目所需的公共和私人资本的大量支出实际上是否合理。在我的研究中,我将利用理论和实验室实验来推进我们目前对浮力对流的理解。首先,我将考虑浮力羽流在倾斜界面上的撞击,其中流体分别流经下面和上面的层。一股浮力二氧化碳或酸性气体撞击具有相对较小渗透性的(可能破裂的)盖岩层,并且与真实的地球物理场景一致,然后我将允许一些。尽管溶解注入液的体积很小,但对流动动力学的影响预计会很大。最后,再次与实际流量一致,我将具体考虑有限的情况。这样做需要考虑表面张力以及其他影响,模型预测和测量数据可能会适应盆地规模的地质算法,而这些算法缺乏足够的分辨率来充分描述精细空间尺度的流动细节。反而,为此,需要对注入液排水、平流和溶解之间的权衡进行参数化,该研究的更广泛目标是以对其他研究人员、行业从业者、监管者和政策制定者有意义的方式收集、解释和综合数据。

项目成果

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Flynn, Morris其他文献

Flynn, Morris的其他文献

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{{ truncateString('Flynn, Morris', 18)}}的其他基金

Localized buoyant convection in porous media: plumes and dispersion
多孔介质中的局域浮力对流:羽流和弥散
  • 批准号:
    RGPIN-2019-04581
  • 财政年份:
    2021
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Heat pipe design optimization through the application of surface chemical treatments and the adaptation of core annular flow theory
通过应用表面化学处理和采用核心环形流动理论优化热管设计
  • 批准号:
    514467-2017
  • 财政年份:
    2021
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Collaborative Research and Development Grants
Localized buoyant convection in porous media: plumes and dispersion
多孔介质中的局域浮力对流:羽流和弥散
  • 批准号:
    RGPIN-2019-04581
  • 财政年份:
    2020
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Localized buoyant convection in porous media: plumes and dispersion
多孔介质中的局域浮力对流:羽流和弥散
  • 批准号:
    RGPIN-2019-04581
  • 财政年份:
    2019
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Heat pipe design optimization through the application of surface chemical treatments and the adaptation of core annular flow theory
通过应用表面化学处理和采用核心环形流动理论优化热管设计
  • 批准号:
    514467-2017
  • 财政年份:
    2019
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Collaborative Research and Development Grants
Heat pipe design optimization through the application of surface chemical treatments and the adaptation of core annular flow theory
通过应用表面化学处理和采用核心环形流动理论优化热管设计
  • 批准号:
    514467-2017
  • 财政年份:
    2018
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Collaborative Research and Development Grants
Gravity current propagation through density stratified media with applications to transport in the built environment and pollution dispersion in nature
通过密度分层介质的重力流传播及其在建筑环境中的传输和自然界中的污染扩散中的应用
  • 批准号:
    RGPIN-2014-04828
  • 财政年份:
    2018
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Heat pipe design optimization through the application of surface chemical treatments and the adaptation of core annular flow theory
通过应用表面化学处理和采用核心环形流动理论优化热管设计
  • 批准号:
    514467-2017
  • 财政年份:
    2017
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Collaborative Research and Development Grants
Gravity current propagation through density stratified media with applications to transport in the built environment and pollution dispersion in nature
通过密度分层介质的重力流传播及其在建筑环境中的传输和自然界中的污染扩散中的应用
  • 批准号:
    RGPIN-2014-04828
  • 财政年份:
    2017
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Gravity current propagation through density stratified media with applications to transport in the built environment and pollution dispersion in nature
通过密度分层介质的重力流传播及其在建筑环境中的传输和自然界中的污染扩散中的应用
  • 批准号:
    RGPIN-2014-04828
  • 财政年份:
    2016
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual

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相似海外基金

Localized buoyant convection in porous media: plumes and dispersion
多孔介质中的局域浮力对流:羽流和弥散
  • 批准号:
    RGPIN-2019-04581
  • 财政年份:
    2021
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
The effect of suspended particles on Rayleigh-Bénard buoyant thermal convection
悬浮颗粒对瑞利-贝纳德浮力热对流的影响
  • 批准号:
    2053204
  • 财政年份:
    2021
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Standard Grant
Localized buoyant convection in porous media: plumes and dispersion
多孔介质中的局域浮力对流:羽流和弥散
  • 批准号:
    RGPIN-2019-04581
  • 财政年份:
    2020
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Localized buoyant convection in porous media: plumes and dispersion
多孔介质中的局域浮力对流:羽流和弥散
  • 批准号:
    RGPIN-2019-04581
  • 财政年份:
    2019
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Discovery Grants Program - Individual
Hydrodynamics instability of natural and forced convection of helium near the critical point
临界点附近氦自然对流和强制对流的流体动力学不稳定性
  • 批准号:
    19760144
  • 财政年份:
    2007
  • 资助金额:
    $ 3.35万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
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