Owing to the use nonlinear boundary element method, extensions to off design conditions can be easily obtained.
由于采用了非线性边界元，文中所提出的方法可以广泛地适用于偏离设计的工况。
The present paper proposes a fully three-dimensional numerical method for potential flow through an impeller by using nonlinear boundary element method.
针对水力机械转轮中全三维势流流场，本文提出了一种有效的计算方法。
In this paper a perturbation boundary element method is proposed to analyse stress and strain for the problems with nonlinear materials.
本文提出用摄动边界元法对材料非线性问题进行应力、应变分析。
The other are the nonlinear method, which studies on the effect of liquid nonlinear sway to aqueduct, such as boundary element method, ALE finite element method etc.
另一种是非线性方法，研究流体非线性晃动对渡槽影响，如边界元法、ALE型有限元法等。
When considering body-force, free item will be arised in the equation of the boundary element method, causing boundary integration to be changed into nonlinear-integration.
边界元法在考虑体积力时要产生积分自由项，这将使边界积分成为非线性积分，从而引起实施时的困难。
A nonlinear mixed boundary element method is used here. And this method can be easily extended to off design conditions. The calculated results agreed very well with experimental data.
由于采用了非线性混合边界元，故本文所提出的方法精度高，简单易行，计算量小，可以较广泛地适用于偏离设计工况的运行情况，算例结果同实验值吻合很好。
A nonlinear mixed boundary element method is used here. And this method can be easily extended to off design conditions. The calculated results agreed very well with experimental data.
由于采用了非线性混合边界元，故本文所提出的方法精度高，简单易行，计算量小，可以较广泛地适用于偏离设计工况的运行情况，算例结果同实验值吻合很好。
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