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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >Unidimensional numerical solution error estimation for convergent apparent order
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Unidimensional numerical solution error estimation for convergent apparent order

机译:收敛视在阶的一维数值解误差估计

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摘要

Numerical solutions of eight differential equations in fluid dynamics are obtained by the finite-difference method with uniform unidimensional grids and with six types of numerical approximations. The main purpose of this work is to calculate uncertainties of numerical solutions using the Richardson error estimator and another estimator which is introduced in this work. These estimators are examined for reliability and accuracy of the uncertainty for the situation in which the size of the grid elements is small. In this case, as is shown in this work, two values of uncertainty can be found that bound the discretization error. [References: 25]
机译:通过具有均匀一维网格和六种数值近似的有限差分方法,获得了八个流体动力学微分方程的数值解。这项工作的主要目的是使用Richardson误差估计器和本文引入的另一种估计器来计算数值解的不确定性。在网格元素尺寸较小的情况下,检查这些估计器的可靠性和不确定性的准确性。在这种情况下,如本工作所示,可以找到两个限制离散化误差的不确定性值。 [参考:25]

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