Changes between Version 2 and Version 3 of u/zchen/week2/plan

Timestamp:

07/04/16 21:58:32 (9 years ago)

Author:

Zhuo Chen

Comment:

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u/zchen/week2/plan

@@ -1 @@
-1. About the simulation zone. The physical size of the current simulation has $24au^3$. However, the hydrodynamic behavior suggest that the gas will go out further and will take a long time to fall back. I estimate that a minimum physical size would be $96au^3$ for $3au$ and $4au$ simulation. The simulation zone may still need to be larger for $6au$ and $10au$ separation. The physical size of the finest cell should be $0.05au$ or less. Therefore, a 4 level AMR with $120^3$ base grid can handle the simulation. The time should take (estimated) more than 15 days on 120 cores (3 level AMR is 5 days). If I can run with 2*120 cores on bluehive. I think the simulation can be done by the end of August.
+1. About the simulation zone. The physical size of the current simulation has $48au^3$. However, the hydrodynamic behavior suggest that the gas will go out further and will take a long time to fall back. I estimate that a minimum physical size would be $96au^3$ for $3au$ and $4au$ simulation. The simulation zone may still need to be larger for $6au$ and $10au$ separation. The physical size of the finest cell should be $0.05au$ or less. Therefore, a 4 level AMR with $120^3$ base grid can handle the simulation. The time should take (estimated) more than 15 days on 120 cores (3 level AMR is 5 days). If I can run with 2*120 cores on bluehive. I think the simulation can be done by the end of August.
 
 2. The pulsation period is 1 yr. This is the highest macroscopic frequency in this simulation (compared to orbital period and/or any other). To resolve the mass loss rate, I need at least 8 outputs per pulsation period. Therefore if the simulation is 300 years. The output will have 2400. Each output will take 200 MB at least. So the total disk space needed for one simulation is at least 500 GB. Currently I have 1200 GB on bluehive.