Skip to content

FDS Validation: updates to Camp Swift vegetation model - remove burne… #13774

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ericvmueller merged 1 commit into from
Nov 18, 2024
Merged

FDS Validation: updates to Camp Swift vegetation model - remove burne… #13774

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
108 changes: 76 additions & 32 deletions Validation/NIST_USFS_Camp_Swift/FDS_Input_Files/vegetation_model.fds
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@
HEAT_OF_REACTION = 418. /

&MATL ID = 'CHAR'
DENSITY = 300.
DENSITY = 125.
CONDUCTIVITY = 0.052
SPECIFIC_HEAT_RAMP = 'c_v'
SURFACE_OXIDATION_MODEL = T
Expand All @@ -28,7 +28,7 @@
HEAT_OF_REACTION = -25000. /

&MATL ID = 'ASH'
DENSITY = 67.
DENSITY = 5.
CONDUCTIVITY = 0.1
SPECIFIC_HEAT_RAMP = 'c_v' /

Expand All @@ -44,7 +44,7 @@
&SURF ID = 'bluestem_lower_blade'
MATL_ID = 'GENERIC VEGETATION'
SURFACE_VOLUME_RATIO = 8439
MOISTURE_FRACTION = 0.25
MOISTURE_FRACTION = 0.259
LENGTH =0.3
GEOMETRY = 'CYLINDRICAL' /

Expand All @@ -55,6 +55,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 141,30,30 /

&INIT PART_ID = 'bluestem_lower_blade',
Expand All @@ -67,32 +71,36 @@
&SURF ID = 'bluestem_lower_cyl'
MATL_ID = 'GENERIC VEGETATION'
SURFACE_VOLUME_RATIO = 1850
MOISTURE_FRACTION = 0.25
MOISTURE_FRACTION = 0.259
LENGTH =0.3
GEOMETRY = 'CYLINDRICAL' /

&INIT PART_ID='bluestem_lower_cyl',
BULK_DENSITY_FILE='../../../../cad/Case_Studies/NIST_USFS_Camp_Swift/bluestem_lower_25cm.bdf',
N_PARTICLES_PER_CELL=1,
CELL_CENTERED=T,
DRY=T,
BULK_DENSITY_FACTOR=0.367/

&PART ID = 'bluestem_lower_cyl'
SAMPLING_FACTOR = 10
SURF_ID = 'bluestem_lower_cyl'
PROP_ID = 'grass image '
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 141,30,30 /

&INIT PART_ID='bluestem_lower_cyl',
BULK_DENSITY_FILE='../../../../cad/Case_Studies/NIST_USFS_Camp_Swift/bluestem_lower_25cm.bdf',
N_PARTICLES_PER_CELL=1,
CELL_CENTERED=T,
DRY=T,
BULK_DENSITY_FACTOR=0.367/

---------- Bluestem upper layer ---------

&SURF ID = 'bluestem_upper_blade'
MATL_ID = 'GENERIC VEGETATION'
SURFACE_VOLUME_RATIO = 9147
MOISTURE_FRACTION = 0.096
MOISTURE_FRACTION = 0.107
LENGTH =0.5
GEOMETRY = 'CYLINDRICAL' /

Expand All @@ -103,6 +111,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 141,30,30 /

&INIT PART_ID='bluestem_upper_blade',
Expand All @@ -115,7 +127,7 @@
&SURF ID = 'bluestem_upper_small_cyl'
MATL_ID = 'GENERIC VEGETATION'
SURFACE_VOLUME_RATIO = 6768
MOISTURE_FRACTION = 0.096
MOISTURE_FRACTION = 0.107
LENGTH =0.5
GEOMETRY = 'CYLINDRICAL' /

Expand All @@ -126,6 +138,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 141,30,30 /

&INIT PART_ID='bluestem_upper_small_cyl',
Expand All @@ -138,7 +154,7 @@
&SURF ID = 'bluestem_upper_large_cyl'
MATL_ID = 'GENERIC VEGETATION'
SURFACE_VOLUME_RATIO = 2438
MOISTURE_FRACTION = 0.096
MOISTURE_FRACTION = 0.107
LENGTH =0.5
GEOMETRY = 'CYLINDRICAL' /

Expand All @@ -149,6 +165,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 141,30,30 /

&INIT PART_ID='bluestem_upper_large_cyl',
Expand All @@ -174,6 +194,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 111,131,78 /

&INIT PART_ID='camphorweed_leaf',
Expand All @@ -197,6 +221,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 111,131,78 /

&INIT PART_ID='camphorweed_small_cyl',
Expand All @@ -220,6 +248,10 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 111,131,78 /

&INIT PART_ID='camphorweed_large_cyl',
Expand All @@ -238,22 +270,26 @@
LENGTH =0.41
GEOMETRY = 'CYLINDRICAL' /

&INIT PART_ID = 'threeawn_blade',
BULK_DENSITY_FILE='../../../../cad/Case_Studies/NIST_USFS_Camp_Swift/threeawn_25cm.bdf',
N_PARTICLES_PER_CELL=1,
CELL_CENTERED=T,
DRY=T,
BULK_DENSITY_FACTOR=0.210/

&PART ID = 'threeawn_blade'
SAMPLING_FACTOR = 10
SURF_ID = 'threeawn_blade'
PROP_ID = 'grass image '
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 185,183,142 /

&INIT PART_ID = 'threeawn_blade',
BULK_DENSITY_FILE='../../../../cad/Case_Studies/NIST_USFS_Camp_Swift/threeawn_25cm.bdf',
N_PARTICLES_PER_CELL=1,
CELL_CENTERED=T,
DRY=T,
BULK_DENSITY_FACTOR=0.200/

&SURF ID = 'threeawn_cyl'
MATL_ID = 'GENERIC VEGETATION'
SURFACE_VOLUME_RATIO = 5910.
Expand All @@ -268,27 +304,22 @@
DRAG_COEFFICIENT =2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE MASS'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 185,183,142 /

&INIT PART_ID='threeawn_cyl',
BULK_DENSITY_FILE='../../../../cad/Case_Studies/NIST_USFS_Camp_Swift/threeawn_25cm.bdf',
N_PARTICLES_PER_CELL=1,
CELL_CENTERED=T,
DRY=T,
BULK_DENSITY_FACTOR=0.200/
BULK_DENSITY_FACTOR=0.210/


---------- Borderveg (bluestem with average properties over entire plant height) ---------

&PART ID = 'borderveg'
SAMPLING_FACTOR = 10
SURF_ID = 'borderveg'
PROP_ID = 'grass image '
DRAG_COEFFICIENT=2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE BULK DENSITY'
STATIC = T
RGB = 141,30,30 /

&SURF ID = 'borderveg'
MATL_ID = 'GENERIC VEGETATION'
! mass weighted average of SVR = ((.653*8439+.367*1850)*.3+(.046*2438+.110*6768+.080*9147)*.5)/(.53*.8)
Expand All @@ -298,11 +329,24 @@
LENGTH = 0.1
GEOMETRY = 'CYLINDRICAL' /

&PART ID = 'borderveg'
SAMPLING_FACTOR = 10
SURF_ID = 'borderveg'
PROP_ID = 'grass image '
DRAG_COEFFICIENT=2.8
QUANTITIES = 'PARTICLE BULK DENSITY', 'PARTICLE BULK DENSITY'
STATIC = T
EMBER_PARTICLE = T
EMBER_DENSITY_THRESHOLD = 62.5
EMBER_VELOCITY_THRESHOLD = 0
TRACK_EMBERS = F
RGB = 141,30,30 /

! Total bluestem biomass distibuted over 80cm ((.653+.367)*.3+(.046+.110+.080)*.5)/.8 = 0.53
&INIT PART_ID='borderveg',
BULK_DENSITY_FILE='../../../../cad/Case_Studies/NIST_USFS_Camp_Swift/borderveg_25cm.bdf',
N_PARTICLES_PER_CELL=1,
CELL_CENTERED=T,
DRY=T,
BULK_DENSITY_FACTOR=0.53/