-1000 -500 0 500 1000 x (AU) -1000 -500 0 500 1000 z (AU) t = 6.90213E+05 yr, step = 214000 t p = 1.76021E+04 yr offset = (-2.84E+04, 1.05E+04) AU 500 AU (c) 22.5 23.0 23.5 24.0 24.5 log column density (cm -2 ) Simulations of binary accretion and modeling of the heliosphere (XC-B) Matsumoto, T. (Hosei univ) Saigo, K (Osaka-pref Univ), Takakuwa, S. (ASIAA) 、 Shiota, D. (Nagoiya Univ), Kataoka, R. (NIPR) Miyahara, H. (Musabi), Miyake, S. (Ibaraki-Col. NIT) 平成27年度CfCAユーザーズミーティング 2016年1月29日@国立天文台水沢キャンパス 2015年度の論文 TM+ 2015,MNRAS, 449, 123
18
Embed
Simulations of binary accretion and modeling of the ...2015年度の論文TM+ 2015,MNRAS, 449, 123 Binary Accretion Introduction: recent works • Observations – Radio observations:
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
-1000 -500 0 500 1000x (AU)
-1000
-500
0
500
1000
z (A
U)
t = 6.90213E+05 yr, step = 214000tp = 1.76021E+04 yr offset = (-2.84E+04, 1.05E+04) AU
500 AU
(c)
22.5 23.0 23.5 24.0 24.5log column density (cm-2)
Simulations of binary accretion and modeling of the heliosphere
(XC-B)
Matsumoto, T. (Hosei univ)
Saigo, K (Osaka-pref Univ), Takakuwa, S. (ASIAA) 、
Shiota, D. (Nagoiya Univ), Kataoka, R. (NIPR)Miyahara, H. (Musabi), Miyake, S. (Ibaraki-Col. NIT)
平成27年度CfCAユーザーズミーティング 2016年1月29日@国立天文台水沢キャンパス
2015年度の論文 TM+ 2015,MNRAS, 449, 123
Binary Accretion
Introduction: recent works
• Observations– Radio observations: dynamics of CBD
)Scales up to ~1000 cores.The better performance when lower frequency of refinement.
5123 cells/level×10 levels, 512 steps
Calculation time is estimated to be 40 hours for 1 year of the heliosphere.
7.89E5 mesh / core / sec
Summary
• Binary accretion– Gas flows in the CBD and gap was reproduced.– Gas flows in the CBD were observed by ALMA Cycle 0. – Gas flows in the gap will be resolved by ALMA-Cycle2
• A dynamical model of Heliosphere– A test calculation
• Rotating solar wind model.• Refinement criterion is distance from the Sun. • The current sheet produces ballerina sturcture.
– Performance• AMR level is 10 layers.• Calculations were scaled on 2,048 cores.• Parallel efficiency is estimated as 50% at 5,000 cores.• OpenMP should be implemented for >10,000 cores.