How to set the dynamic removing the small eddy.

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How to set the dynamic removing the small eddy.

Postby Seishou » Thu Jun 07, 2018 3:38 pm

Hi everyone,

I've simulated the idealized tropical cyclone by em_tropical_cyclone.

And I got many small vortex around the tropical cyclone about the model time 10 more days.

The Figure like this URL:

https://drive.google.com/open?id=1MJYFUHWFik3LfCUwZL43tOYk62ANtyoZ

Has anyone has any suggestion for namelist setting to remove this situation?


The following setting is my namelist:

&domains
time_step = 60,
time_step_fract_num = 0,
time_step_fract_den = 1,
max_dom = 1,
e_we = 501,
e_sn = 501,
e_vert = 40,
dx = 20000,
dy = 20000,
ztop = 25000.,
/

&physics
mp_physics = 6,
ra_lw_physics = 4,
ra_sw_physics = 4,
co2tf = 1,
radt = 20,
sf_sfclay_physics = 1,
sf_surface_physics = 1,
bl_pbl_physics = 1,
bldt = 0,
cu_physics = 6,
cudt = 0,
num_soil_layers = 5,
isfflx = 1,
isftcflx = 1,
icloud = 1,
&dynamics
rk_ord = 3,
diff_opt = 0, 0, 0,
km_opt = 1, 1, 1,
damp_opt = 0,
dampcoef = 0.,
zdamp = 10.,
rad_nudge = 0,
khdif = 3000.,
kvdif = 60.,
smdiv = 0.3,
emdiv = 0.1,
epssm = 0.1,
h_mom_adv_order = 5,
v_mom_adv_order = 3,
h_sca_adv_order = 5,
v_sca_adv_order = 3,
non_hydrostatic = .true.,
mix_full_fields = .true.,
moist_adv_opt = 1,
scalar_adv_opt = 1,
momentum_adv_opt = 1,
tke_adv_opt = 1,
diff_6th_opt = 2,
diff_6th_factor = 0.12,
mix_isotropic = 1,
/

&bdy_control
periodic_x = .true.,
symmetric_xs = .false.,
symmetric_xe = .false.,
open_xs = .false.,
open_xe = .false.,
periodic_y = .true.,
symmetric_ys = .false.,
symmetric_ye = .false.,
open_ys = .false.,
open_ye = .false.,
/



Thanks for your help.

Best,

Peter
Seishou
 
Posts: 2
Joined: Mon Jul 07, 2014 2:04 pm

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