2016/04/22 16:13 [演講]數學系演講公告-Self-Gravitational Force Calculation for Infinites

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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