Target adiabatic conditions

[Denes Adolph]

Hi,

how do i model a target with adiabatic surface conditions (compare p. 36 ValidationGuide2021).

Unfortunalty i cant get the file target_1.in .

Thanks for any clues!

Denes

[Richard Peacock]

All of the V&V files for CFAST 7.6, including the file target_1.in, are available in the CFAST repository at github.com and as a separate download on the release page on github.com. I've shown it below.  The adiabatic option for targets is intended primarily for model verification so it will have limited use outside of that purpose.  The &DIAG line in the file sets up for an adiabatic target.

&HEAD VERSION = 7600, TITLE = 'ADIABATIC_TARGET_SURFACE_TEMPERATURE_VERIFICIATION_CASE' /

 

!! Scenario Configuration 

&TIME SIMULATION = 20 PRINT = 1 SMOKEVIEW = 1 SPREADSHEET = 1 / 

&INIT PRESSURE = 101325 RELATIVE_HUMIDITY = 50 INTERIOR_TEMPERATURE = 20 EXTERIOR_TEMPERATURE = 20 /

&DIAG ADIABATIC_TARGET_VERIFICATION = 'ON' RADIATIVE_INCIDENT_FLUX = 1/ 

 

!! Material Properties 

&MATL ID = 'ConcreteBE2' MATERIAL = 'Concrete ICFMP BE2', 

      CONDUCTIVITY = 2 DENSITY = 2300 SPECIFIC_HEAT = 0.9, THICKNESS = 0.15 EMISSIVITY = 0.95 /

&MATL ID = 'TC' MATERIAL = 'Thermocouple (small steel target for plume temp)', 

      CONDUCTIVITY = 54 DENSITY = 7850 SPECIFIC_HEAT = 0.425, THICKNESS = 0.001 EMISSIVITY = 0.95 /

 

!! Compartments 

&COMP ID = 'Compartment 1'

      DEPTH = 10 HEIGHT = 10 WIDTH = 10

      CEILING_MATL_ID = 'ConcreteBE2' CEILING_THICKNESS = 0.15 WALL_MATL_ID = 'ConcreteBE2' WALL_THICKNESS = 0.15 FLOOR_MATL_ID = 'ConcreteBE2' FLOOR_THICKNESS = 0.15

      ORIGIN = 0, 0, 0 GRID = 50, 50, 50 /

 

!! Devices

&DEVC ID = 'Targ 1' COMP_ID = 'Compartment 1' LOCATION = 5, 5, 5 TYPE = 'PLATE' MATL_ID = 'TC' SURFACE_ORIENTATION = 'FLOOR'

     TEMPERATURE_DEPTH = 0.0005 DEPTH_UNITS = 'M' ADIABATIC_TARGET = .TRUE. CONVECTION_COEFFICIENTS = 0.003, 0.005 /

 

&TAIL /