How to use the UVW function?

[BONG JUN KIM]

Hi all,

Now I studying gas nozzles.

Jet fan(fds example) was used to create a new input file. but there was a problem.

The uvw of the nozzle using HVAC can not be applied.(uvw=1, 0, -1)

The input file is as follows.

Thank you for your advice.

------------------ input file ---------------

&HEAD CHID='test_uvw'/

&TIME T_END=10.0/

&DUMP DT_DEVC=1.0, NFRAMES=100 / DT_RESTART=100.0,

&MESH ID='Mesh1', IJK=15,10,32, XB=0, 1.5, 0, 1.0, 0, 3.2/

&VENT MB='XMIN', SURF_ID='OPEN' /

&VENT MB='XMAX', SURF_ID='OPEN' /

&VENT MB='YMIN', SURF_ID='OPEN' /

c&VENT MB='YMAX', SURF_ID='OPEN' /

&VENT MB='ZMIN', SURF_ID='OPEN' /

&VENT MB='ZMAX', SURF_ID='OPEN' /

&SURF ID='AIR', COLOR='RED', MASS_FLUX=2.00, SPEC_ID='AIR'/

&OBST XB=0.2,0.3,0.5,0.6,2.9,3.0, COLOR='RED' / 

&VENT ID='Normal vent', XB=0.2,0.3,0.5,0.6,2.9,2.9, SURF_ID='AIR' /

&OBST XB=0.7,0.8,0.5,0.6,2.9,3.0, COLOR='BLUE'/ 

&VENT ID='in',  XB=0.7,0.8,0.5,0.6,3.0,3.0, SURF_ID='HVAC' / 

&VENT ID='out', XB=0.7,0.8,0.5,0.6,2.9,2.9, SURF_ID='HVAC', UVW= 1,0,-1, COLOR='BLUE'/

&HVAC ID='in',  TYPE_ID='NODE', DUCT_ID='duct', VENT_ID='in'/

&HVAC ID='out', TYPE_ID='NODE', DUCT_ID='duct', VENT_ID='out'/ 

&HVAC ID='duct', TYPE_ID='DUCT', NODE_ID='in','out', VOLUME_FLOW=0.02, AREA=0.01 /

&SLCF QUANTITY='VOLUME FRACTION', VECTOR=.TRUE., SPEC_ID='AIR', PBY=0.55/

&SLCF QUANTITY='VELOCITY', VECTOR=.TRUE., PBY=0.55/

&SLCF QUANTITY='VELOCITY', VECTOR=.TRUE., PBX=0.25/

&SLCF QUANTITY='VELOCITY', VECTOR=.TRUE., PBX=0.75/

&TAIL /

------------- smoke view(red: vent, blue : HVAC uvw)---------

[fde]

In FDS 6.6.0 it runs. What version do you use?

[BONG JUN KIM]

I used 6.5.3

was there any UVW function difference between 6.5.3 and 6.6.0?
2018년 6월 7일 목요일 오후 6시 38분 5초 UTC+9, fde 님의 말:

[fde]

There might be. I am not aware of.

[BONG JUN KIM]

okay, thank you for your interest.

2018년 6월 7일 목요일 오후 8시 35분 42초 UTC+9, fde 님의 말: