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Author Topic: about Ramp_Q.  (Read 2958 times)

eunmin2

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about Ramp_Q.
« on: March 10, 2016, 11:01:30 pm »

&OBST XB=4.0,5.0,0.0,1.0,0.0,1.0, SURF_ID='wood'/ fire
&VENT SURF_ID='FIRE', XB=4.0,5.0,0.0,1.0,1.0,1.0, RGB=204,0,0/ Vent

&SURF ID='FIRE',
      COLOR='RED',
      HRRPUA=800.0,
      RAMP_Q='Qt'
      E_COEFFICIENT=3./



&RAMP ID='Qt',T= 0.0,F=0.0    /
&RAMP ID='Qt',T= 2.0,F=0.000015 /
&RAMP ID='Qt',T= 4.0,F=0.000063 /
&RAMP ID='Qt',T= 6.0,F=0.00014  /
&RAMP ID='Qt',T= 8.0,F=0.00025  /
&RAMP ID='Qt',T= 10.0,F=0.00039 /
&RAMP ID='Qt',T= 12.0,F=0.00056  /
&RAMP ID='Qt',T= 14.0,F=0.00077  /
&RAMP ID='Qt',T= 16.0,F=0.001/
&RAMP ID='Qt',T= 18.0,F=0.00126
&RAMP ID='Qt',T= 20.0,F=0.00165 /
&RAMP ID='Qt',T= 22.0,F=0.00190 /
&RAMP ID='Qt',T= 23.0,F=0.00215 /
&RAMP ID='Qt',T= 25.0,F=0.00244 /
&RAMP ID='Qt',T= 30.0,F=0.00351 /
&RAMP ID='Qt',T= 35.0,F=0.00478 /
&RAMP ID='Qt',T= 40.0,F=0.00625 /
&RAMP ID='Qt',T= 45.0,F=0.00791 /
&RAMP ID='Qt',T= 50.0,F=0.00976 /
&RAMP ID='Qt',T= 55.0,F=0.01182 /
&RAMP ID='Qt',T= 60.0,F=0.0141 /
&RAMP ID='Qt',T= 65.0,F=0.0165 /
&RAMP ID='Qt',T= 70.0,F=0.01914 /
&RAMP ID='Qt',T= 75.0,F=0.0219 /
&RAMP ID='Qt',T= 80.0,F=0.025 /
&RAMP ID='Qt',T= 85.0,F=0.0282 /
&RAMP ID='Qt',T= 90.0,F=0.0316 /
&RAMP ID='Qt',T= 95.0,F=0.0352 /
&RAMP ID='Qt',T= 100.0,F=0.0391 /
&RAMP ID='Qt',T= 105.0,F=0.0433 /
&RAMP ID='Qt',T= 110.0,F=0.0352 /
&RAMP ID='Qt',T= 115.0,F=0.0489 /
&RAMP ID='Qt',T= 120.0,F=0.0567 /
&RAMP ID='Qt',T= 125.0,F=0.0610 /
&RAMP ID='Qt',T= 130.0,F=0.0660 /
&RAMP ID='Qt',T= 135.0,F=0.0712  /
&RAMP ID='Qt',T= 140.0,F=0.0766 /
&RAMP ID='Qt',T= 145.0,F=0.0821 /
&RAMP ID='Qt',T= 150.0,F=0.0879 /
&RAMP ID='Qt',T= 155.0,F=0.0939/
&RAMP ID='Qt',T= 165.0,F=0.1063 /
&RAMP ID='Qt',T= 170.0,F=0.1129 /
&RAMP ID='Qt',T= 180.0,F=0.1265 /
&RAMP ID='Qt',T= 190.0,F=0.1410 /
&RAMP ID='Qt',T= 200.0,F=0.1562 /
&RAMP ID='Qt',T= 210.0,F=0.1723 /
&RAMP ID='Qt',T= 220.0,F=0.1891 /
&RAMP ID='Qt',T= 230.0,F=0.2067 /
&RAMP ID='Qt',T= 240.0,F=0.2250  /
&RAMP ID='Qt',T= 250.0,F=0.2442 /
&RAMP ID='Qt',T= 260.0,F=0.2641 /
&RAMP ID='Qt',T= 270.0,F=0.2848 /
&RAMP ID='Qt',T= 280.0,F=0.3063/
&RAMP ID='Qt',T= 290.0,F=0.3286/
&RAMP ID='Qt',T= 300.0,F=0.3516 /
&RAMP ID='Qt',T= 310.0,F=0.3754 /
&RAMP ID='Qt',T= 320.0,F=0.4001 /
&RAMP ID='Qt',T= 330.0,F=0.4254 /
&RAMP ID='Qt',T= 340.0,F=0.4516  /
&RAMP ID='Qt',T= 350.0,F=0.4786 /
&RAMP ID='Qt',T= 360.0,F=0.5063 /
&RAMP ID='Qt',T= 370.0,F=0.5348 /
&RAMP ID='Qt',T= 380.0,F=0.5641/
&RAMP ID='Qt',T= 390.0,F=0.5942/
&RAMP ID='Qt',T= 400.0,F=0.6250 /
&RAMP ID='Qt',T= 410.0,F=0.6567 /
&RAMP ID='Qt',T= 420.0,F=0.6891 /
&RAMP ID='Qt',T= 430.0,F=0.7223 /
&RAMP ID='Qt',T= 440.0,F=0.7563  /
&RAMP ID='Qt',T= 450.0,F=0.7911 /
&RAMP ID='Qt',T= 460.0,F=0.8266 /
&RAMP ID='Qt',T= 470.0,F=0.8629 /
&RAMP ID='Qt',T= 480.0,F=0.9001/
&RAMP ID='Qt',T= 490.0,F=0.9379/
&RAMP ID='Qt',T= 500.0,F=0.9766 /
&RAMP ID='Qt',T= 510.0,F=1.0 /


Is this a problem????
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Jared

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Re: about Ramp_Q.
« Reply #1 on: March 12, 2016, 08:56:45 am »

Post your entire file.  I don't see anything regarding a mesh.  What is your intent with this model?
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eunmin2

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Re: about Ramp_Q.
« Reply #2 on: March 14, 2016, 11:16:49 pm »

&HEAD CHID='spex'  /
&MESH IJK=50,50,21, XB=0.0,5.0,0.0,5.0,0.0,2.1/

&TIME T_END=700.0/


==================sp====================

&PART ID='Water',COLOR='BLUE',SURF_ID='WAT'/

&SPEC ID = 'WATER VAPOR' /

&SURF ID='WAT',MATL_ID='MOISTURE',THICKNESS = 0.00025,LENGTH = 0.1,WIDTH=0.001/

&PROP ID='Default02_Water Spray02',
      QUANTITY='SPRINKLER LINK TEMPERATURE',
      ACTIVATION_TEMPERATURE=68.0,
      RTI=50.0,
      PART_ID='Water',
      FLOW_RATE=80.0, SPRAY_ANGLE=30.0,80.0
      SMOKEVIEW_ID='sprinkler_pendent',
      DROPLET_VELOCITY=5.0/

======================ma======================

&SURF ID='wood', COLOR='PINK'
         MATL_ID='WOOD',THICKNESS = 0.02, BURN_AWAY=.TRUE. /
&MATL ID = 'WOOD'
EMISSIVITY = 0.9
CONDUCTIVITY = 0.2
SPECIFIC_HEAT = 1.3
DENSITY = 570.
N_REACTIONS = 1
A(1) = 1.89E10
E(1) = 1.51E5
N_S(1) = 1.0
MATL_ID(1,1) = 'CHAR'
NU_MATL(1,1) = 0.18
HEAT_OF_REACTION(1) = 430.
HEAT_OF_COMBUSTION(1) = 14500. /

&MATL ID = 'CHAR'
DENSITY = 200.
CONDUCTIVITY = 1.0
SPECIFIC_HEAT = 1.6 /


&MATL ID = 'MOISTURE'
DENSITY = 1000.
CONDUCTIVITY = 0.1
SPECIFIC_HEAT = 4.184
N_REACTIONS = 1
NU_SPEC = 1.0
SPEC_ID = 'WATER VAPOR'
REFERENCE_TEMPERATURE = 100.
HEAT_OF_REACTION = 2259./


&REAC ID='Polyurethane(Flexible) foams-GM21',
      FYI='SFPE HAND BOOK',
      C=1.0,
      H=1.8,
      O=0.3,
      N=0.05,
      HEAT_OF_COMBUSTION=2.62E4,
      CO_YIELD=0.01,
      SOOT_YIELD=0.131/


&PROP ID='HD_MOD',
      QUANTITY='LINK TEMPERATURE',
      ACTIVATION_TEMPERATURE=70.0,
      RTI=50.0/

&PROP ID='Cleary Photoelectric P2',
      QUANTITY='CHAMBER OBSCURATION',
      ALPHA_E=1.8,
      BETA_E=-0.8,
      ALPHA_C=0.8,
      BETA_C=-0.8,/
   

&PROP ID='Default02_Water Spray02',
      QUANTITY='SPRINKLER LINK TEMPERATURE',
      ACTIVATION_TEMPERATURE=68.0,
      RTI=50.0,
      PART_ID='Water',
      FLOW_RATE=80.0, SPRAY_ANGLE=30.0,80.0
      SMOKEVIEW_ID='sprinkler_pendent',
      DROPLET_VELOCITY=5.0/

&DEVC ID='HD', PROP_ID='HD_MOD', XYZ=3.0,3.3,2.0/
&DEVC ID='SD01', PROP_ID='Cleary Photoelectric P2', XYZ=2.2,4.0,2.0/
&DEVC ID='SD03', PROP_ID='Cleary Photoelectric P2', XYZ=4.2,3.6,2.0/
&DEVC ID='SD02', PROP_ID='Cleary Photoelectric P2', XYZ=1.6,2.2,2.0/

&DEVC ID='SPRK04', PROP_ID='Default02_Water Spray02', XYZ=2.0,2.0,2.0/
&DEVC ID='SPRK03', PROP_ID='Default02_Water Spray02', XYZ=3.0,2.0,2.0/
&DEVC ID='SPRK02', PROP_ID='Default02_Water Spray02', XYZ=3.0,3.0,2.0/
&DEVC ID='SPRK01', PROP_ID='Default02_Water Spray02', XYZ=4.0,4.0,2.0/

&MATL ID='CONCRETE',
      FYI='NBSIR 88-3752 - ATF NIST Multi-Floor Validation',
      SPECIFIC_HEAT=1.04,
      CONDUCTIVITY=1.8,
      DENSITY=2280.0/

&SURF ID='concreate wall',
      RGB=146,202,166,
      MATL_ID(1,1)='CONCRETE',
      MATL_MASS_FRACTION(1,1)=1.0,
      THICKNESS(1)=0.2,
      LAYER_DIVIDE=0.0/

==============================fire==================================================
&OBST XB=4.0,5.0,0.0,1.0,0.0,1.0, SURF_ID='wood'/fire
&VENT SURF_ID='FIRE', XB=4.0,5.0,0.0,1.0,1.0,1.0, RGB=204,0,0/ Vent

&SURF ID='FIRE',
      COLOR='RED',
      HRRPUA=3000.0,
      RAMP_Q='Qt'
      E_COEFFICIENT=3./



&RAMP ID='Qt',T= 0.0,F=0.0    /
&RAMP ID='Qt',T= 2.0,F=0.000015 /
&RAMP ID='Qt',T= 4.0,F=0.000063 /
&RAMP ID='Qt',T= 6.0,F=0.00014  /
&RAMP ID='Qt',T= 8.0,F=0.00025  /
&RAMP ID='Qt',T= 10.0,F=0.00039 /
&RAMP ID='Qt',T= 12.0,F=0.00056  /
&RAMP ID='Qt',T= 14.0,F=0.00077  /
&RAMP ID='Qt',T= 16.0,F=0.001/
&RAMP ID='Qt',T= 18.0,F=0.00126
&RAMP ID='Qt',T= 20.0,F=0.00165 /
&RAMP ID='Qt',T= 22.0,F=0.00190 /
&RAMP ID='Qt',T= 23.0,F=0.00215 /
&RAMP ID='Qt',T= 25.0,F=0.00244 /
&RAMP ID='Qt',T= 30.0,F=0.00351 /
&RAMP ID='Qt',T= 35.0,F=0.00478 /
&RAMP ID='Qt',T= 40.0,F=0.00625 /
&RAMP ID='Qt',T= 45.0,F=0.00791 /
&RAMP ID='Qt',T= 50.0,F=0.00976 /
&RAMP ID='Qt',T= 55.0,F=0.01182 /
&RAMP ID='Qt',T= 60.0,F=0.0141 /
&RAMP ID='Qt',T= 65.0,F=0.0165 /
&RAMP ID='Qt',T= 70.0,F=0.01914 /
&RAMP ID='Qt',T= 75.0,F=0.0219 /
&RAMP ID='Qt',T= 80.0,F=0.025 /
&RAMP ID='Qt',T= 85.0,F=0.0282 /
&RAMP ID='Qt',T= 90.0,F=0.0316 /
&RAMP ID='Qt',T= 95.0,F=0.0352 /
&RAMP ID='Qt',T= 100.0,F=0.0391 /
&RAMP ID='Qt',T= 105.0,F=0.0433 /
&RAMP ID='Qt',T= 110.0,F=0.0472 /
&RAMP ID='Qt',T= 115.0,F=0.0516 /
&RAMP ID='Qt',T= 120.0,F=0.0567 /
&RAMP ID='Qt',T= 125.0,F=0.0610 /
&RAMP ID='Qt',T= 130.0,F=0.0660 /
&RAMP ID='Qt',T= 135.0,F=0.0712  /
&RAMP ID='Qt',T= 140.0,F=0.0766 /
&RAMP ID='Qt',T= 145.0,F=0.0821 /
&RAMP ID='Qt',T= 150.0,F=0.0879 /
&RAMP ID='Qt',T= 155.0,F=0.0939/
&RAMP ID='Qt',T= 165.0,F=0.1063 /
&RAMP ID='Qt',T= 170.0,F=0.1129 /
&RAMP ID='Qt',T= 180.0,F=0.1265 /
&RAMP ID='Qt',T= 190.0,F=0.1410 /
&RAMP ID='Qt',T= 200.0,F=0.1562 /
&RAMP ID='Qt',T= 210.0,F=0.1723 /
&RAMP ID='Qt',T= 220.0,F=0.1891 /
&RAMP ID='Qt',T= 230.0,F=0.2067 /
&RAMP ID='Qt',T= 240.0,F=0.2250  /
&RAMP ID='Qt',T= 250.0,F=0.2442 /
&RAMP ID='Qt',T= 260.0,F=0.2641 /
&RAMP ID='Qt',T= 270.0,F=0.2848 /
&RAMP ID='Qt',T= 280.0,F=0.3063/
&RAMP ID='Qt',T= 290.0,F=0.3286/
&RAMP ID='Qt',T= 300.0,F=0.3516 /
&RAMP ID='Qt',T= 310.0,F=0.3754 /
&RAMP ID='Qt',T= 320.0,F=0.4001 /
&RAMP ID='Qt',T= 330.0,F=0.4254 /
&RAMP ID='Qt',T= 340.0,F=0.4516  /
&RAMP ID='Qt',T= 350.0,F=0.4786 /
&RAMP ID='Qt',T= 360.0,F=0.5063 /
&RAMP ID='Qt',T= 370.0,F=0.5348 /
&RAMP ID='Qt',T= 380.0,F=0.5641/
&RAMP ID='Qt',T= 390.0,F=0.5942/
&RAMP ID='Qt',T= 400.0,F=0.6250 /
&RAMP ID='Qt',T= 410.0,F=0.6567 /
&RAMP ID='Qt',T= 420.0,F=0.6891 /
&RAMP ID='Qt',T= 430.0,F=0.7223 /
&RAMP ID='Qt',T= 440.0,F=0.7563  /
&RAMP ID='Qt',T= 450.0,F=0.7911 /
&RAMP ID='Qt',T= 460.0,F=0.8266 /
&RAMP ID='Qt',T= 470.0,F=0.8629 /
&RAMP ID='Qt',T= 480.0,F=0.9001/
&RAMP ID='Qt',T= 490.0,F=0.9379/
&RAMP ID='Qt',T= 500.0,F=0.9766 /
&RAMP ID='Qt',T= 510.0,F=1.0 /



===================================wall=======================================================

&OBST XB=0.0,4.8,0.0,0.2,0.0,2.0, COLOR='YELLOW', SURF_ID='concreate wall'/ Concreate Wall
&OBST XB=4.8,5.0,0.0,5.0,0.0,2.0, COLOR='YELLOW', SURF_ID='concreate wall'/ Concreate Wall
&OBST XB=0.0,0.2,0.0,5.0,0.0,2.0, COLOR='YELLOW', SURF_ID='concreate wall'/ Concreate Wall
&OBST XB=0.0,5.0,4.8,5.0,0.0,2.0, COLOR='BLUE', SURF_ID='concreate wall'/ Concreate Wall


&VENT SURF_ID='OPEN', XB=0.0,0.0,0.0,5.0,0.0,2.0, RGB=255,255,255, TRANSPARENCY=0.0/ Vent
&VENT SURF_ID='OPEN', XB=0.0,5.0,0.0,0.0,0.0,2.0, RGB=255,255,255, TRANSPARENCY=0.0/ Vent
&VENT SURF_ID='OPEN', XB=0.0,5.0,5.0,5.0,0.0,2.0, RGB=255,255,255, TRANSPARENCY=0.0/ Vent
&VENT SURF_ID='OPEN', XB=5.0,5.0,0.0,0.0,0.0,2.0, RGB=255,255,255, TRANSPARENCY=0.0/ Vent

&SLCF QUANTITY='TEMPERATURE', PBZ=1.8/
&SLCF QUANTITY='VISIBILITY', PBZ=1.8/

&TAIL /


this model made to relieve my curiosity.
And It needs in our company.
It stops the analysis in about 150 seconds.
Why do these problems occur?
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Jared

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Re: about Ramp_Q.
« Reply #3 on: March 17, 2016, 06:02:02 pm »

What is the error you are receiving?  What happens in your model at the time that the error occurs?
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eunmin2

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Re: about Ramp_Q.
« Reply #4 on: March 17, 2016, 07:36:49 pm »

Like I said above.
my model was stop on 150s.
700 seconds to want to run the program.
Why this happens?
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Jared

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Re: about Ramp_Q.
« Reply #5 on: March 21, 2016, 06:16:23 am »

When it stops, it produces an error.  What does the error say?  It should be something like, "numerical instability".
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eunmin2

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Re: about Ramp_Q.
« Reply #6 on: March 31, 2016, 08:32:58 pm »

yes,, what can I do?uu
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mdangelmaier

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Re: about Ramp_Q.
« Reply #7 on: April 25, 2016, 03:14:11 am »

Try deactivating different things in your model. My first guess would be sprinkler, deactivate it and see if the simulation still stops at 150s
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