Variable step size time integration methods for transient eddy current problems

Variable step size time integration methods for transient eddy current problems
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瞬态涡流问题的变步长时间积分方法

DOI:
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发表时间:
1998
期刊:
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通讯作者:
K. Forsman
K. Forsman
中科院分区:
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文献类型:
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作者:
F. Cameron;R. Piché;K. Forsman

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对于被建模为微分-代数方程(DAE)的暂态涡流问题,适用于常微分方程组(ODE)的时间积分方法并不一定有效。我们提出了两种适用于涡流问题所属DAE类的时间积分的Runge-Kutta方法。这两种方法都有误差估计器,因此允许可变步长。在测试中,我们的可变步长积分器与固定步长积分器竞争,尤其是与Crank-Nicolson。
For transient eddy current problems modelled as differential-algebraic equations (DAEs), a time integration method suitable for ordinary differential equations (ODEs) will not necessarily work. We present two Runge-Kutta methods that are suitable for the time integration of the classes of DAEs to which eddy current problems belong. Both methods have error estimators and hence allow variable step sizes. In tests our variable step size integrators were competitive with fixed step size integrators, in particular with Crank-Nicolson.