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NUMERICAL PROBLEMS OF THE MAGNETIC FIELDS ON AN AXISYMMETRIC MODEL

Mou Zongze, Miao Jing, He Qibing, Jian Guangde, Li Huanxing, Luo Xinjun

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 1996, 13 (1): 105-111.

Abstract （221）

PDF （344KB）（784）

The oscillating solutions of the magnetic fields may arise on an axisymmetric model by using first order finite elements.In addtion,they may also occur for nonuniform grids.The paper analyses the cause of forming oscillating solutions and the behaviour of oscillating solutions.The methods of cancelling the oscillation are suggested.

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PLASMA DISPERSION FUNCTION CALCULATION WITH REMOVING SINGULARITY METHOD AND OTHERS

Mou Zongze, Zhao Huaiguo

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 1994, 11 (3): 367-374.

Abstract （250）

PDF （365KB）（728）

A numerical method is proposed for calculating singular integrals. It is shown that the procedure is guite powerful for physics calculations with singularity such as the plasma dispersion function and others. In general, the integrals with more complex singularities can be dealt by this method easily.

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A NUMERICAL METHOD FOR SINGULAR BOUNDARY VALUE PROBLEM FOR ORDINARY DIFFERENTIAL EQUATION

He Qibing, Mou Zongze

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS 1994, 11 (1): 17-26.

Abstract （183）

PDF （531KB）（707）

A numerical method so called regularizing method applies for singular boundary value problem for ordinary differential equation with solutions that can be represented as series expansions on a subinterval near the singularity. A regular boundary value problem is derived on thd remaining interval, for which a difference method is used. Convergence results and numerical examples are given.

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