Gan
unread,Oct 8, 2008, 10:05:49 AM10/8/08Sign in to reply to author
Sign in to forward
You do not have permission to delete messages in this group
Sign in to report message
Either email addresses are anonymous for this group or you need the view member email addresses permission to view the original message
to FDS and Smokeview Discussions
Hi ,
I am actually trying to write an input file for a candle flame in a
room. I have written an input, but I am getting some errors in it
like Poisson initialisation error and coarse pressure computation. I
am including the input file with this mail. I have considered the
candle wax to be a rectangle instead of a cylinder. It will be very
helpful, If you could please help me get the coding straight. Thank
you for spending your time in this matter.
&HEAD CHID='real candle',TITLE='candle flame in a room'/
&MESH IJK=8,8,8,XB = 0.0,40.0,0.0,100.0,0.0,80.0/mesh 1 away from
candle
&MESH IJK=4,4,8,XB = 40.0,60.0,0.0,100.0,0.0,80.0/mesh 2 near the
candle
&MESH IJK=8,8,8,XB = 60.0,100.0,0.0,100.0,0.0,80.0/mesh 3 away from
candle
&MISC PRESSURE_CORRECTION=.TRUE./
&TIME T_END=10.0/
&MATL ID = 'BRICK'
CONDUCTIVITY = 0.69
SPECIFIC_HEAT = 0.84
DENSITY = 1600.0 /
&MATL ID = 'FIBRE'
CONDUCTIVITY = 0.25
SPECIFIC_HEAT = 2.5/
&MATL ID = 'WAX'
CONDUCTIVITY = 0.25
SPECIFIC_HEAT = 2.5
DENSITY = 930.0/
&SURF ID = 'BRICK WALL'
MATL_ID = 'BRICK'
COLOR = 'RED'
BACKING = 'EXPOSED'
THICKNESS = 5.0 /
&SURF ID = 'CANDLE'
MATL_ID = 'WAX'
COLOR = 'BROWN'
THICKNESS = 20.0 /
&SURF ID = 'WICKCANDLE'
MATL_ID = 'FIBRE'
COLOR = 'BLUE'
THICKNESS = 2.0 /
&OBST XB=0.0, 5.0, 0.0, 100.0, 0.0, 80.0, SURF_ID='BRICK WALL' /wall
on left side
&OBST XB=95.0, 100.0, 0.0, 100.0, 0.0, 80.0, SURF_ID='BRICK WALL' /
wall on right side
&OBST XB=45.0, 55.0, 45.0, 55.0, 0.0, 20.0, SURF_ID='CANDLE' /wax of
candle
&OBST XB=48.0, 52.0, 48.0, 52.0, 20.0, 32.0, SURF_ID='WICKCANDLE' /
wick of candle
&SURF ID='FIRE',HRRPUA=1967.0 /flame of the candle
&OBST
XB=45.0,55.0,45.0,55.0,24.0,32.0,SURF_IDS='FIRE','INERT','INERT' /
&SLCF PBZ= 42.0,QUANTITY='VELOCITY', VECTOR=.TRUE. /
&SLCF PBZ= 42.0,QUANTITY='DENSITY', /
&SLCF PBZ= 42.0,QUANTITY='PRESSURE', /
&SLCF PBZ= 42.0,QUANTITY='TEMPERATURE', /
&SLCF PBX= 50.0,QUANTITY='VELOCITY', VECTOR=.TRUE. /
&SLCF PBX= 50.0,QUANTITY='DENSITY', /
&SLCF PBX= 50.0,QUANTITY='PRESSURE', /
&SLCF PBX= 50.0,QUANTITY='TEMPERATURE', /
&SLCF PBY= 50.0,QUANTITY='VELOCITY', VECTOR=.TRUE. /
&SLCF PBY= 50.0,QUANTITY='DENSITY', /
&SLCF PBY= 50.0,QUANTITY='PRESSURE', /
&SLCF PBY= 50.0,QUANTITY='TEMPERATURE', /
&TAIL/
Yours sincerely,
Gan