FDS Validation: Update Loughborough cases

firemodels · Jun 21, 2022 · a14dc65 · a14dc65
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Showing 3 changed files with 27 additions and 12 deletions.
diff --git a/Validation/Loughborough_Jet_Fires/FDS_Input_Files/jet1.fds b/Validation/Loughborough_Jet_Fires/FDS_Input_Files/jet1.fds
@@ -1,19 +1,22 @@
 &HEAD CHID='jet1', TITLE='Loughborough University Jet Fire Experiments' /
 
-&TIME T_END=30./
+&TIME T_BEGIN=-60., T_END=30./
 
 &MISC POROUS_FLOOR=F, HUMIDITY=50. /
 
 &MESH IJK=40,40,25, XB=-4.0,4.0,-4.0,4.0,0,5.0, MULT_ID='mesh'  /
 &MULT ID='mesh', DX=8, DY=8, DZ=5, I_LOWER=-1, I_UPPER=1, J_LOWER=-4, J_UPPER=2, K_UPPER=1 /  42 meshes
 
+&VENT PBZ=0.   , SURF_ID='GROUND' /
 &VENT MB='ZMAX', SURF_ID='OPEN' /
 &VENT MB='YMIN', SURF_ID='OPEN' /
 &VENT MB='YMAX', SURF_ID='OPEN' /
-&VENT MB='XMIN', SURF_ID='OPEN', N_EDDY=100,L_EDDY=1.0,VEL_RMS=0.1 /
+&VENT MB='XMIN', SURF_ID='OPEN' /
 &VENT MB='XMAX', SURF_ID='OPEN' /
 
-&WIND SPEED=6.3, DIRECTION=271., L=100000, z_0=0.03, Z_REF=10.85 /
+&WIND INITIAL_SPEED=6.3, DIRECTION=271., PRESSURE_GRADIENT_FORCE=0.08 /
+
+&SURF ID='GROUND', ROUGHNESS=0.5 /
 
 &REAC FUEL ='METHANE'
       SOOT_YIELD = 0.01
@@ -27,8 +30,10 @@
 &PART ID='methane droplets',SPEC_ID='METHANE', ADHERE_TO_SOLID=-1, QUANTITIES(1:3)='PARTICLE DIAMETER','PARTICLE TEMPERATURE','PARTICLE AGE',
       DIAMETER=1000., INITIAL_TEMPERATURE=-160., SAMPLING_FACTOR=1 /
 
-&PROP ID='nozzle', PART_ID='methane droplets', MASS_FLOW_RATE=2.9
+&PROP ID='nozzle', PART_ID='methane droplets', MASS_FLOW_RATE=2.9, FLOW_RAMP='flow',
       PARTICLE_VELOCITY=1000., SPRAY_ANGLE=0.,5., PARTICLES_PER_SECOND=20000, OFFSET=1.,SMOKEVIEW_ID='nozzle'    /
+&RAMP ID='flow', T=0., F=0. /
+&RAMP ID='flow', T=2., F=1. /
 
 &SURF ID='cal_prop', FREE_SLIP=T, EMISSIVITY=1.0, CONVECTION_LENGTH_SCALE=0.9 /
 

diff --git a/Validation/Loughborough_Jet_Fires/FDS_Input_Files/jet2.fds b/Validation/Loughborough_Jet_Fires/FDS_Input_Files/jet2.fds
@@ -1,19 +1,22 @@
 &HEAD CHID='jet2', TITLE='Loughborough University Jet Fire Experiments' /
 
-&TIME T_END=30./
+&TIME T_BEGIN=-60., T_END=30./
 
 &MISC POROUS_FLOOR=F, HUMIDITY=50. /
 
 &MESH IJK=40,40,25, XB=-4.0,4.0,-4.0,4.0,0,5.0, MULT_ID='mesh'  /
 &MULT ID='mesh', DX=8, DY=8, DZ=5, I_LOWER=-2, I_UPPER=1, J_LOWER=-5, J_UPPER=4, K_UPPER=1 /  80 meshes
 
+&VENT PBZ=0.   , SURF_ID='GROUND' /
 &VENT MB='ZMAX', SURF_ID='OPEN' /
 &VENT MB='YMIN', SURF_ID='OPEN' /
 &VENT MB='YMAX', SURF_ID='OPEN' /
-&VENT MB='XMIN', SURF_ID='OPEN', N_EDDY=100,L_EDDY=1.0,VEL_RMS=0.1 /
+&VENT MB='XMIN', SURF_ID='OPEN' /
 &VENT MB='XMAX', SURF_ID='OPEN' /
 
-&WIND SPEED=6.2, DIRECTION=297., L=100000, z_0=0.03, Z_REF=10.85 /
+&WIND INITIAL_SPEED=6.2, DIRECTION=297., PRESSURE_GRADIENT_FORCE=0.08 /
+
+&SURF ID='GROUND', ROUGHNESS=0.5 /
 
 &REAC FUEL ='METHANE'
       SOOT_YIELD = 0.01
@@ -27,8 +30,10 @@
 &PART ID='methane droplets',SPEC_ID='METHANE', ADHERE_TO_SOLID=-1, QUANTITIES(1:3)='PARTICLE DIAMETER','PARTICLE TEMPERATURE','PARTICLE AGE',
       DIAMETER=1000., INITIAL_TEMPERATURE=-160., SAMPLING_FACTOR=1 /
 
-&PROP ID='nozzle', PART_ID='methane droplets', MASS_FLOW_RATE=9.6
+&PROP ID='nozzle', PART_ID='methane droplets', MASS_FLOW_RATE=9.6, FLOW_RAMP='flow',
       PARTICLE_VELOCITY=1000., SPRAY_ANGLE=0.,5., PARTICLES_PER_SECOND=20000, OFFSET=1.,SMOKEVIEW_ID='nozzle'    /
+&RAMP ID='flow', T=0., F=0. /
+&RAMP ID='flow', T=2., F=1. /
 
 &SURF ID='cal_prop', FREE_SLIP=T, EMISSIVITY=1.0, CONVECTION_LENGTH_SCALE=0.9 /
 

diff --git a/Validation/Loughborough_Jet_Fires/FDS_Input_Files/jet3.fds b/Validation/Loughborough_Jet_Fires/FDS_Input_Files/jet3.fds
@@ -1,19 +1,22 @@
 &HEAD CHID='jet3', TITLE='Loughborough University Jet Fire Experiments' /
 
-&TIME T_END=30./
+&TIME T_BEGIN=-60., T_END=30./
 
 &MISC POROUS_FLOOR=F, HUMIDITY=50. /
 
 &MESH IJK=40,40,25, XB=-4.0,4.0,-4.0,4.0,0,5.0, MULT_ID='mesh'  /
 &MULT ID='mesh', DX=8, DY=8, DZ=5, I_LOWER=-3, I_UPPER=1, J_LOWER=-6, J_UPPER=4, K_UPPER=1 /  110 meshes
 
+&VENT PBZ=0.   , SURF_ID='GROUND' /
 &VENT MB='ZMAX', SURF_ID='OPEN' /
 &VENT MB='YMIN', SURF_ID='OPEN' /
 &VENT MB='YMAX', SURF_ID='OPEN' /
-&VENT MB='XMIN', SURF_ID='OPEN', N_EDDY=100,L_EDDY=1.0,VEL_RMS=0.1 /
+&VENT MB='XMIN', SURF_ID='OPEN' /
 &VENT MB='XMAX', SURF_ID='OPEN' /
 
-&WIND SPEED=3.6, DIRECTION=267., L=100000, z_0=0.03, Z_REF=10.85 /
+&WIND INITIAL_SPEED=3.6, DIRECTION=267., PRESSURE_GRADIENT_FORCE=0.08 /
+
+&SURF ID='GROUND', ROUGHNESS=0.5 /
 
 &REAC FUEL ='METHANE'
       SOOT_YIELD = 0.01
@@ -27,8 +30,10 @@
 &PART ID='methane droplets',SPEC_ID='METHANE', ADHERE_TO_SOLID=-1, QUANTITIES(1:3)='PARTICLE DIAMETER','PARTICLE TEMPERATURE','PARTICLE AGE',
       DIAMETER=1000., INITIAL_TEMPERATURE=-160., SAMPLING_FACTOR=1 /
 
-&PROP ID='nozzle', PART_ID='methane droplets', MASS_FLOW_RATE=19.5
+&PROP ID='nozzle', PART_ID='methane droplets', MASS_FLOW_RATE=19.5, FLOW_RAMP='flow',
       PARTICLE_VELOCITY=1000., SPRAY_ANGLE=0.,5., PARTICLES_PER_SECOND=20000, OFFSET=1.,SMOKEVIEW_ID='nozzle'    /
+&RAMP ID='flow', T=0., F=0. /
+&RAMP ID='flow', T=2., F=1. /
 
 &SURF ID='cal_prop', FREE_SLIP=T, EMISSIVITY=1.0, CONVECTION_LENGTH_SCALE=0.9 /