High-Performance Computing to Evaluate Hierarchical Heterogeneity Paradigms in Sedimentary Aquifer Systems

评估沉积含水层系统中分层异质性范式的高性能计算

• 批准号: 0810158
• 负责人: Robert Ritzi
• 金额: $ 30万
• 依托单位: Wright State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-15 至 2013-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0810158&HistoricalAwards=false
• 关键词: Performance; Computing; Evaluate; Hierarchical; Heterogeneity

The scaling of processes governing ground-water flow and mass transport in the near subsurface is being linked to the hierarchical sedimentary architecture found within geo-reservoirs. The PIs have developed a code that generates three-dimensional models that represent the heterogeneity of hydrogeologic attributes arising from hierarchical sedimentary architecture in braid-belt deposits. The sedimentary architecture represented ranges in scale from centimeters to kilometers. This architecture does not represent all deposits, aquifers, or reservoirs, but it does represent important ones, including the Fortymile Wash alluvium at Yucca Mountain, glaciofuvial aquifers in the northern United States, the Ringold Formation at the Hanford site, and the Ivishak Formation, an Alaskan north-slope petroleum reservoir. The model is not meant to represent any one site exactly, but to represent important aspects of heterogeneity common to many sites. The full model represents a domain 2.5 km by 2.5 km by 10 m thick with voxels of 1 cubic centimeter on a 62.5 trillion-voxel lattice. While parts of the domain have been created on desktop workstations, we are currently collaborating with scientists at the Pacific Northwest National Laboratory (PNNL) to generate the full 62.5 trillion node domain using the high performance supercomputer located at the Environmental Molecular Sciences Laboratory (EMSL) at PNNL. The full model domain will be freely distributed to the research community as a resource for testing ideas related to the upscaling problem, the inverse problem, and for other computational research requiring high-resolution grids. In our work, we are generating simulations to test the hypothesis that the percolation of highly permeable open-framework gravels must be understood not only from their proportions and geometry, but also from the proportions, geometry, and spatial distribution of the strata at multiple scales (unit bars, compound bars, channel fills, etc.). Furthermore, we are generating numerical transport simulations to test the hypothesis that solutions to upscaling problems may require accounting for the presence of percolation, as well as the hierarchy of unit types defined at different scales.If successful, the full model domain and numerical tracer tests will be freely distributed to the research community. Thus, the research will promote the testing of emerging ideas in computational research on ground water flow and transport. The hypotheses we will test using these models are relevant to heterogeneity and upscaling issues in environmental cleanup and to enhanced petroleum recovery. The project also benefits human resources and education in science and engineering through the training of a post-doctoral scholar in the areas of high-performance computing, hydrogeology, and sedimentology, and through mentoring from university and national laboratory scientists.

在接近地下的地下水流量和质量传输的过程的缩放与地质库中发现的分层沉积结构有关。 PI开发了一个代码，该代码生成了三维模型，该模型代表了由编织带沉积物中的分层沉积结构引起的水文地质属性的异质性。沉积结构代表从厘米到公里的规模范围。 该建筑并不代表所有沉积物，含水层或储层，但确实代表了重要的建筑，包括尤卡山的四兆液洗涤冲积物，美国北部的冰川富裕含水层，汉福德遗址的林格地层以及Ivishak组的Ringold地层，以及Ivishak组的形成，阿拉斯加北坡石油储藏室。该模型并不是要准确地代表任何一个站点，而是代表许多站点共有的异质性的重要方面。完整的模型代表一个域2.5 km x 2.5 km x 10 m厚的域，在62.5万亿摩托的晶格上，1立方厘米的体素。 尽管该域的部分是在桌面工作站上创建的，但我们目前正在与太平洋西北国家实验室（PNNL）的科学家合作，使用位于环境分子科学实验室（EMSL）的高性能超级计算机生成全62.5万亿个节点域。在pnnl。 完整的模型域将被自由分发给研究社区，以作为测试与上尺度问题，反问题以及其他需要高分辨率网格的计算研究有关的思想的资源。 在我们的工作中，我们正在生成模拟，以检验以下假设：高度渗透的开放式固定剂牙齿的渗透不仅必须从它们的比例和几何形状中理解，而且还必须从比例，几何形状和空间分布中的多个尺度上的空间分布来理解。 （单位条，复合条，通道填充等）。此外，我们正在生成数值传输模拟，以检验以下假设：提高升级问题的解决方案可能需要考虑到存在渗透的存在，以及在不同尺度上定义的单位类型的层次结构。将自由分发给研究界。 因此，该研究将促进对地下水流和运输的计算研究中新兴思想的测试。 我们将使用这些模型测试的假设与环境清理中的异质性和升级问题有关，并增强了石油恢复。该项目还通过培训高性能计算，水文地质学和沉积学领域的博士后学者，并通过大学和国家实验室科学家的指导来使人力资源和教育受益。