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楼主 |
发表于 2015-8-26 09:54:30
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亲 这些量你都懂吗
Namelist variables for controlling the adaptive time step option:
These options are only valid for the ARW core.
use_adaptive_time_step = .false. ; T/F use adaptive time stepping, ARW only
step_to_output_time = .true. ; if adaptive time stepping, T/F modify the
time steps so that the exact history time is reached
target_cfl(max_dom) = 1.2,1.2 ; vertical and horizontal CFL <= to this value implies
no reason to reduce the time step, and to increase it
target_hcfl(max_dom) = .84,.84 ; horizontal CFL <= to this value implies
max_step_increase_pct(max_dom) = 5,51 ; percentage of previous time step to increase, if the
max(vert cfl, horiz cfl) <= target_cfl, then the time
will increase by max_step_increase_pct. Use something
large for nests (51% suggested)
starting_time_step(max_dom) = -1,-1 ; flag = -1 implies use 6 * dx (defined in start_em),
starting_time_step = 100 means the starting time step
for the coarse grid is 100 s
max_time_step(max_dom) = -1,-1 ; flag = -1 implies max time step is 3 * starting_time_step,
如果没搞明白的话建议去掉试试先,我也不太懂这些,在一开始系统给的namelist中应该没这么多东西吧 |
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