2016/04/21 08:45 [學術]Self-Gravitational Force Calculation for Infinitesimally ...

輔 仁 大 學 數 學 系

學 術 演 講

演講人:嚴健彰 教授(輔仁大學數學系)

講 題:Self-Gravitational Force Calculation for Infinitesimally Thin Gaseous Disks

日 期:民國105年4月27日(星期三)

時 間:下午3:40~4:30

地 點:輔仁大學數學系MA307教室

茶 會:當日下午3:10於數學系會議室(MA318)

摘  要:

Investigating the evolution of disk galaxies and the dynamics of proto-stellar disks can

involve the use of both a hydrodynamical and a Poisson solver. These systems are

usually approximated as infinitesimally thin disks. We present a direct algorithm for

calculating self-gravitational forces with second-order accuracy without artificial

boundary conditions. With the help of representation of convolution forms and fast

Fourier transform, the numerical complexity is nearly linear.

 

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