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Explorations in three-dimensional lattice Boltzmann simulation for fluid flow in packed particle beds.

机译：关于填充颗粒床中流体流动的三维格子Boltzmann模拟的探索。

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摘要

This dissertation research presents the results of our exploration into the emerging numerical Lattice Boltzmann method (LBM) with particular attention to single and multiphase flow in porous media. Recently, in an effort to advance the study of particle characterization, researchers at the University of Utah have used X-ray microtomography (XMT) as a major analytical tool for the study of opaque packed particle beds, and the area of flow simulation research is a natural extension of the micro CT research activity. In this regard, LBM has been coupled with X-ray analysis by computerized tomography (CT) to obtain a three-dimensional (3D) reconstructed image which establishes the boundary conditions for flow analysis.;During this dissertation research several LB models have been studied and coding software implemented in order to build up capabilities for the final objective to simulate multiphase flow in porous media. We have been successful in implementing these two-dimensional (2D) and 3D software capabilities for the single relaxation time (SRT) model to simulate single phase saturated flow. The LB software structure developed for single phase saturated flow has been extended for both 2D and 3D simulation of single component multiphase flow using the He-Chen-Zhang LBM model. Furthermore, the He model has been extended to incorporate fluid-solid interaction forces and has been applied to the simulation of percolation using actual XMT images of packed particle beds. Finally, 2D and 3D software capabilities have been developed for multicomponent multiphase flow using as a basis the Shan and Chen model. Additionally, techniques for analysis and visualization of the simulation data have been created.;In this regard, we have emphasized the comparison of the simulation results not just with validation problems but also with experimental data. In fact, the LBM has been used to compare simulation results with some experimental results of single phase flow in porous media and with experimental results of permeability determination for packed particle beds. Also, the LBM has been used to simulate percolation phenomena in sandstone, and the results are compared with accepted theory. Finally, efforts have been made to explore the use of LBM for the determination of water-oil relative permeability curves.
机译：本论文的研究提出了我们对新兴的数值格子Boltzmann方法（LBM）的探索结果，特别关注多孔介质中的单相和多相流动。最近，为了推进颗粒表征研究，犹他大学的研究人员已使用X射线显微断层照相术（XMT）作为研究不透明填充颗粒床的主要分析工具，流动模拟研究的领域是micro CT研究活动的自然延伸。在这方面，LBM与计算机断层扫描（CT）的X射线分析相结合，获得了三维（3D）重建图像，该图像为流动分析建立了边界条件。;在此论文研究过程中，研究了几种LB模型为了实现最终目标以模拟多孔介质中的多相流动而构建的编码软件。我们已经成功地为单弛豫时间（SRT）模型实现了这些二维（2D）和3D软件功能，以模拟单相饱和流。针对单相饱和流开发的LB软件结构已扩展为使用He-Chen-Zhang LBM模型对单组分多相流进行2D和3D模拟。此外，He模型已扩展为包含流固耦合力，并已使用堆积颗粒床的实际XMT图像应用于渗流模拟。最后，以Shan和Chen模型为基础，为多组分多相流开发了2D和3D软件功能。此外，已经创建了用于仿真数据分析和可视化的技术。在这方面，我们强调了仿真结果的比较，不仅是验证问题，还包括实验数据。实际上，LBM已用于将模拟结果与多孔介质中单相流的一些实验结果以及填充颗粒床的渗透率测定的实验结果进行比较。此外，LBM已被用于模拟砂岩的渗流现象，并将结果与​​公认的理论进行了比较。最后，人们努力探索使用LBM来确定水油相对渗透率曲线。

著录项

  • 作者

    Videla, Alvaro R.;

  • 作者单位

    The University of Utah.;

  • 授予单位 The University of Utah.;
  • 学科 Engineering Mechanical.;Engineering Petroleum.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 278 p.
  • 总页数 278
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;石油、天然气工业;
  • 关键词

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