How to use EDEV in FDS EVAC 2.6.0

[cunco...@gmail.com]

Hello everyone,

I'm trying to use FDS EVAC (2.6.0)  within FDS 6.7.7 but i have always the error of input device not found for the EDEV class from the initialisation step. I want to start the evacuation by smoke detector.

&PROP ID='P1',QUANTITY='CHAMBER OBSCURATION',ALPHA_E=1.8,BETA_E=-1.0,ALPHA_C=1.0,BETA_C=-0.8,ACTIVATION_OBSCURATION=3.24/
&DEVC ID='SDI_EVAC', PROP_ID='P1', XYZ=5.5,2,3.75,EVACUATION=.TRUE./ 

&EDEV ID='Edev_det', GLOBAL=.TRUE., TIME_DELAY=0.0, PROB=1.0,PRE_EVAC_DIST=0,
PRE_MEAN=5,MESH_ID='MEVAC',PERS_ID='Adult',INPUT_ID='SDI_EVAC'/

->ERROR: CTRL SDI cannot locate item for input SDI_EVAC

The same file works well with FDS 6.3

Could you please give me some hints to integrate the evacuation detector to the three running steps of FDS-EVAC.

Thanks in advance!

[TimoK]

Hi! It might be that the EDEV does not work anymore with the FDS 6.7.7 evacuation module. It might be ralated to the change, where the three-step evacuation calculation procedure was introduced. Now the procedure is:

1) Do the evacuation initialization calculation: this produces the CHID_evac.eff file (and CHID_evac.xyz)

2) Do the "almost ordinary" fire calculation: this reads the CHID_evac.xyz file and writes the FED data to

    the CHID_evac.fed file. This phase should also deal with the &DEVC .. EVACUATION=.TRUE. devices (or CTRLs),

    but it might be that this is not working anymore, i.e., the phase 2 is not writing that data on the CHID_evac.fed file.

3) Do the evacuation calculation that reads the CHID_evac.fed file, i.e., does use the fire information.

I should add this to my ToDo list.

TimoK