Study of 3D dynamics of gravitating systems using supercomputers: methods and applications

Authors:
Nikolay Snytnikov;Vitaly Vshivkov;Valery Snytnikov
Affiliations:
Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russia;Institute of Computational Mathematics and Mathematical Geophysics SB RAS, Novosibirsk, Russia;Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
Venue:
PaCT'07 Proceedings of the 9th international conference on Parallel Computing Technologies
Year:
2007

Citing 1
Cited 1

Computer simulation using particles

Computer simulation using particles

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PaCT '09 Proceedings of the 10th International Conference on Parallel Computing Technologies

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Abstract

We describe parallel numerical code for solving problems of stellar dynamics. The code is based on numerical solving of Poisson and Vlasov equations in cylindrical coordinates using particle-in-cells method. The code is designed for use on supercomputers with distributed memory. We consider different possible strategies of parallelization according to initial technical parameters of numerical methods and physical conditions of the model. We present results of numerical simulations for the following problems of stellar dynamics: investigation of influence of central potential on the vertical motions of thin gravitating disk; stability of uniform sphere with anisotropic distribution of velocity; numerical approximation of equilibrium states of gravitating systems.