[Wrf-users] Upper boundary cfl error
Min Zhu
min.zhu at res-ltd.com
Thu Mar 4 03:33:39 MST 2010
Hi,
It seems that the problem is in lower boundary rather than upper
boundary. Also your time step seems to be bigger.
Cheers,
Min Zhu
Meso-scale Wind Modeller
D +44 (0)1923 299 360
RES Group, registered in England and Wales with Company Number 1589961
Registered Office: Beaufort Court, Egg Farm Lane, Kings Langley,
Hertfordshire WD4 8LR
P please consider the environment - do you really need to print this
email?
From: wrf-users-bounces at ucar.edu [mailto:wrf-users-bounces at ucar.edu] On
Behalf Of Andre Pattantyus
Sent: 04 March 2010 00:11
To: wrf-users at ucar.edu
Subject: [Wrf-users] Upper boundary cfl error
Hi all,
I am getting these few errors at my upper boundary. Among other things,
I have tried using the new damping option, diff_opt =2, because I am
using running towards an LES in my inner domain. A solution seems easy
but so far my attempts have not yielded success. below is my namelist.
3 points exceeded cfl=2 in domain d03 at time 2006-03-29_12:00:16 hours
MAX AT i,j,k: 40 80 4 vert_cfl,w,d(eta)= 2.263442993 -80.54151917
0.2999961376E-02
3 points exceeded cfl=2 in domain d03 at time 2006-03-29_12:00:16
hours
MAX AT i,j,k: 40 80 4 vert_cfl,w,d(eta)= 2.485260963 13.09560013
0.2999961376E-02
3 points exceeded cfl=2 in domain d03 at time 2006-03-29_12:00:16
hours
MAX AT i,j,k: 41 80 4 vert_cfl,w,d(eta)= 2.567909241 -117.0119095
0.2999961376E-02
22 points exceeded cfl=2 in domain d03 at time
2006-03-29_12:00:16+08/09 hours
MAX AT i,j,k: 40 80 4 vert_cfl,w,d(eta)= 6.311451435 -170.4623871
0.2999961376E-02
36 points exceeded cfl=2 in domain d03 at time
2006-03-29_12:00:16+08/09 hours
MAX AT i,j,k: 40 80 3 vert_cfl,w,d(eta)= 6.109247208 -223.6106720
0.2799987793E-02
AVOST IN VILKA
~
~
~
&time_control
run_days = 2,
run_hours = 36,
run_minutes = 0,
run_seconds = 0,
start_year = 2006, 2006, 2006,
start_month = 03, 03, 03,
start_day = 29, 29, 29,
start_hour = 12, 12, 12,
start_minute = 00, 00, 00,
start_second = 00, 00, 00,
end_year = 2006, 2006, 2006,
end_month = 03, 03, 03,
end_day = 31, 31, 31,
end_hour = 00, 00, 00,
end_minute = 00, 00, 00,
end_second = 00, 00, 00,
interval_seconds = 10800
input_from_file = .true.,.true.,.true.,
history_interval = 60, 60, 60,
frames_per_outfile = 1000, 1000, 1000,
restart = .false.,
restart_interval = 720,
io_form_history = 2
io_form_restart = 2
io_form_input = 2
io_form_boundary = 2
debug_level = 0
/
&domains
time_step = 8,
time_step_fract_num = 0,
time_step_fract_den = 1,
max_dom = 3,
e_we = 121, 169, 241,
e_sn = 121, 169, 241,
e_vert = 61, 61, 61,
p_top_requested = 5000,
num_metgrid_levels = 40,
num_metgrid_soil_levels = 4,
dx = 4500, 1500, 500,
dy = 4500, 1500, 500,
grid_id = 1, 2, 3,
parent_id = 0, 1, 2,
i_parent_start = 1, 33, 53,
j_parent_start = 1, 33, 53,
parent_grid_ratio = 1, 3, 3,
parent_time_step_ratio = 1, 3, 3,
feedback = 0,
smooth_option = 0,
eta_levels = 1.0000, .9976, .9948, .9920,
.9890,
.9858, .9825, .9790, .9754, .9718, .9679, .9637, .9590, .9538, .9480,
.9415, .9340, .9251, .9144, .9020, .8883, .8736, .8582, .8420, .8253,
.8079, .7900, .7714, .7523, .7326, .7124, .6915, .6699, .6477, .6248,
.6015, .5779, .5540, .5300, .5057, .4812, .4566, .4319, .4070, .3822,
.3576, .3333, .3100, .2881, .2679, .2494, .2316, .2135, .1936, .1707,
.1445, .1159, .0863, .0569, .0282, .0000,
/
&physics
mp_physics = 8, 8, 8,
ra_lw_physics = 1, 1, 1,
ra_sw_physics = 2, 2, 2,
radt = 4, 4, 4,
sf_sfclay_physics = 4, 4, 4,
sf_surface_physics = 3, 3, 3,
bl_pbl_physics = 4, 4, 4,
bldt = 0, 0, 0,
cu_physics = 0, 0, 0,
cudt = 0, 0, 0,
isfflx = 1,
ifsnow = 0,
icloud = 1,
surface_input_source = 1,
num_soil_layers = 6,
sf_urban_physics = 0,
maxiens = 1,
maxens = 3,
maxens2 = 3,
maxens3 = 16,
ensdim = 144,
slope_rad = 1, 1, 1,
topo_shading = 1, 1, 1,
shadlen = 25000.,
/
&fdda
/
&dynamics
w_damping = 1,
diff_opt = 2,
km_opt = 4,
diff_6th_opt = 2, 2, 2,
diff_6th_factor = 0.12, 0.12, 0.12,
base_temp = 290.
damp_opt = 3,
zdamp = 5000., 5000., 5000.,
dampcoef = 0.2, 0.2, 0.2
khdif = 0, 0, 0,
kvdif = 0, 0, 0,
non_hydrostatic = .true., .true., .true.,
moist_adv_opt = 1, 1, 1,
scalar_adv_opt = 1, 1, 1,
/
&bdy_control
spec_bdy_width = 5,
spec_zone = 1,
relax_zone = 4,
specified = .true., .false.,.false.,
nested = .false., .true., .true.,
/
&grib2
/
&namelist_quilt
nio_tasks_per_group = 0,
nio_groups = 1,
--
Andre Pattantyus, Graduate Student Research Assistant
Marine and Environmental Systems, Florida Institute of Technology
150 W. University Blvd, Melbourne, FL 32901
Phone: (321) 674-8330 | Fax: (321) 674-7212 | Email:
apattantyus2008 at fit.edu
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