...
首页> 外文期刊>Journal of Computational Physics >ELIMINATION OF ADAPTIVE GRID INTERFACE ERRORS IN THE DISCRETE CELL CENTERED PRESSURE EQUATION
【24h】

ELIMINATION OF ADAPTIVE GRID INTERFACE ERRORS IN THE DISCRETE CELL CENTERED PRESSURE EQUATION

机译:消除离散细胞中心压力方程中的自适应网格界面误差

获取原文
获取原文并翻译 | 示例
           

摘要

Classical cell centered discretization of the reservoir simulation pressure equation on an h-adaptive grid results in an O(1/h) leading truncation error at the grid interface. A new flux continuous finite volume correction is presented together with an improved version of a previously proposed correction. While both corrections eliminate the leading error, the new correction exhibits the best convergence rates and has the following properties: the resulting matrix is in general symmetric positive definite, diagonally dominant for locally isotropic spatially varying coefficients, convergence to O(h) is demonstrated, and support of the standard approximation is retained, ensuring a fully implicit implementation. Results computed by the uncorrected classical scheme and both correction schemes are compared for two phase flow simulations with multilevel dynamic local grid refinement. (C) 1996 Academic Press, Inc. [References: 25]
机译:h自适应网格上储层模拟压力方程的经典单元中心离散化导致网格界面处的O(1 / h)超前截断误差。提出了新的通量连续有限体积校正以及先前提出的校正的改进版本。虽然这两种校正都消除了前导误差,但新校正显示出最佳的收敛速度,并且具有以下特性:所得矩阵通常是对称正定的,对于局部各向同性的空间变化系数,对角占优势,证明了收敛到O(h),并保留了对标准近似的支持,从而确保了完全隐式的实现。比较了未经校正的经典方案和两种校正方案的计算结果,以进行两阶段的多级动态局部网格细化的流模拟。 (C)1996 Academic Press,Inc. [参考:25]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号