学术通告
2018年度
2017年度
2016年度
2015年度
2014年度
2013年度
2012年度
2011年度
2010年度
规章制度
通知公告
·2018年度王宽诚率先人才计划产研人才扶持项目推荐申报公示 (2018-08-16)
·2018年“西部之光”人才项目台内推荐、2014年入选者终期评估结果公示 (2018-07-17)
·关于开展2018年度“西部之光”人才培养引进计划相关工作的通知 (2018-06-27)
·关于对中国科学院“新时代科技报国”优秀共产党员拟表彰对象的公示(陈雪飞) (2018-06-20)
·2018年度云南省科学技术奖推荐项目公示 (2018-05-15)
·中国科学院云南天文台科研支撑平台项目水土保持设施自主验收公示 (2018-05-15)
·中国科学院云南天文台科研后勤综合服务用房项目水土保持设施自主验收公示 (2018-05-15)
·中国科学院云南天文台人才周转公寓项目水土保持设施自主验收公示 (2018-05-15)
·关于做好2018年度中国科学院优秀博士学位论文初选工作的通知 (2018-04-13)
·关于申报2018年度中国科学院“院长奖”奖学金的通知 (2018-04-13)
您现在的位置:首页 > 新闻资讯 > 学术通告 > 2018年度
【云台学术报告】2018年8月21日(星期二)下午2:00—3:00 四号楼110室
2018-03-23  |  作者:  |  【  】 【打印】 【关闭

【学术报告】
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
报告题目:Multiscale Multiphysics Simulation Tool for Dusty Protoplanetary Disks

报告人:  Prof. Shentai Li

报告人单位: Los Alamos National Laboratory

报告时间:2018年8月21日(星期二)下午2:00—3:00

报告地点:四号楼110室

报告语言:英文

报告摘要: 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  

  We have developed a simulation tool (LA-COMPASS) for dusty proto-planery disks. The proto-planetary disk is treated as a three-dimensional(3D), self-gravitating gas, whose motion is described by the Navier-Stokes equations, coupled to a similar (pressureless) system of equations for the dust in a spherical coordinate centered on the star. The two sets of equations for gas and dust particles are coupled via drag terms. A second-order high-resolution Godunov scheme is used to solve the equations numerically. A semi-Lagrangian method is implemented to remove the background Keplerian motion to alleviate the time step restriction in azimuthal direction. We also develop a fast solver for the disk self-gravity and coordinate acceleration due to the disk gravity.

  We also develop a solver for proto-planetary motions. The coupling between the disk and planet motion is carefully considered. To improve the resolution near the planets, we develop a semi-Lagrangian adaptive mesh refinement (AMR) technique. Unlike traditional dynamic AMR, the refinement region in our AMR can move across a number of cells within one time step. The code is fully parallelized via message-passing interface coupled with OpenMP for multi-threads. We have verified the algorithm and code using several examples with exact solutions. We have used the code to simulate the dust distribution with and without planets, and obtained results that are in good agreement with observation data from ALMA

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

本通知也可以在云台学术报告网页看到: 

http://www.ynao.cas.cn/xwzx/xstg/ 

申请安排学术报告的同事请参见台学术报告管理办法: 

http://www.ynao.cas.cn/xwzx/xstg/gzzd/ 

云台邀请团组:太阳物理理论研究团组   

邀请方联系人:朱伯靖 0871-6392-0142

8月20日  

 
©2010  中科院云南天文台    版权所有     滇ICP备05000010号
地址:中国 云南省 昆明市 官渡区 羊方旺396号    邮编:650216    联系我们