西南石油大学学报(自然科学版) ›› 2000, Vol. 22 ›› Issue (1): 5-8.DOI: 10.3863/j.issn.1000-2634.2000.01.002

• 油气理论研究 • 上一篇    下一篇

非牛顿流体的差分方法研究

张茂林1 吴清松1 李传亮1 梅海燕1 孙雷2 孙良田2

  

  1. 1.中国科学技术大学热科学和能源工程系,安徽 合肥 230027; 2.西南石油学院,四川 南充637001
  • 收稿日期:1999-06-30 修回日期:1900-01-01 出版日期:2000-02-20 发布日期:2000-02-20
  • 通讯作者: 张茂林

RESEARCH ON THE FORMULATION OF FINITE DIFFERENCE METHODS FOR NON NEWTONIAN FLUIDS IN POROUS MEDIA

ZHABG Maolin1 WU Qingsong1 LI Chuanliang1 et al
  

  1. University of Science and Technology of China
  • Received:1999-06-30 Revised:1900-01-01 Online:2000-02-20 Published:2000-02-20
  • Contact: ZHABG Maolin

摘要: 用解析方法求解非牛顿流体的流动方程是非常困难的,工程上通常采用有限差分方法对其进行数值求解。为避免用势梯度分量差分方法求解非牛顿流体渗流问题所带来的偏差,提出了求解非牛顿流体渗流问题的势梯度模差分方法;从理论上分析了势梯度分量差分方法存在的缺陷,即非牛顿流体的渗流微分方程与之相对应的分量差分方程不相容。最后以Bingham原油为例揭示了二种方法在数值上的差别。

关键词: 非牛顿流体, 渗流, 数值模拟, 差分方法

Abstract: It is very difficult to solve the flow equations of non-Newtonian fluids by using analytic methods. The finite difference method is usually used to solve them numerically in engineering. In order to bringing some errors with the scalar component finite difference method of potential gradients to calculate the flow problem of non-Newtonian fluids in porous media. The paper presents the modular finite difference method of potential gradients. The defect of scalar component finite-difference method of potential gradients is also analyzed theoretically. That is the finite difference equations are not consistent
with the differential equations of non- Newtonian fluids in porous media. Finally, a calculation example of Bingham oil was shown the numerical difference of the two methods.

Key words: non-Newtonian fluid, percolation, numerical simulation, finite difference methods

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