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| 引用本文： | 刘立明,廖新维. ?????????????????????????[J]. 力学与实践, 2003, 25(4): 0-0 |
| 作者姓名： | 刘立明 廖新维 |
| 作者单位： | 石油大学试井中心,北京,102200 |
| 摘 要： | H.B.Jayaraman在20世纪80年代推导的悬链线索元有限元法计算精度高，特别适用于精度要求比较高的大型索结构. 但是，当索原长Lu的取值与悬索两节点之间的直线长度相近时，迭代不易收敛，甚至发散. 提出了当该迭代不收敛时，应采用的迭代策略. 计算结果表明，该方法准确，计算精度高，可供悬索结构设计、施工时参考. |
| 关 键 词： | 悬索 悬链线单元 算法 |
| 修稿时间： | 2002-07-08 |
The modified IMPES solution to oil-water flow in porous media |
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| LIU Liming LIAO Xinwei. The modified IMPES solution to oil-water flow in porous media[J]. Mechanics and Engineering, 2003, 25(4): 0-0 | |
| Authors: | LIU Liming LIAO Xinwei |
| Abstract: | The paper presents a linearization method of governing equations for oil-water flow in porousmedia, discretized to locally perpendicular grids.By using an approximate vector, the same stability is obtained as the semi-implicit solution with IMPESthrough solving the N×N matrices twice. The operationprocedure is presented. The modified IMPES also enjoysmuch higher computation efficiency. The simulation example shows the effectiveness. The method can be generalized for the numerical solution for other typesof non-linear diffusion equations. |
| Keywords: | 2-phase flow in porous media difference numerical solution linearization computation stability computation efficiency |
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