Question regarding DEVC temperature drop after relocating sprinkler

[Heng-sen]

Dear FDS experts,

I would like to ask for your advice regarding an unexpected change in the DEVC temperature curves in my CSV output.

I am currently working on a stocker fire simulation. In my initial model (Version A), I checked the DEVC temperature curve at the height of Z=9.35m, and it successfully reached 68°C.

Subsequently, I modified the location of the sprinkler in a revised model (Version B) in an attempt to make it activate. However, I found that the peak temperature at the exact same monitoring location actually decreased, and the sprinkler still failed to activate.

What could be the possible reasons for this temperature drop? Any insights or suggestions would be greatly appreciated!
Stock(A).txt
Stock(B).txt

[Er9y714]

There are multiple 'virtual link' s in the model. Which one do you refer that it has changed its behaviour?

Furthermore, the geometry of the model does not align with the mesh.

[drjfloyd]

You have changed the DEVC from SPRINKLER LINK TEMPERATURE to LINK TEMPERATURE. With C_FACTOR=0 this should result in the same output. Running your file (had to adjust the floor leak vents to get the case to run with the current source) I see a slight divergence in the two DEVC where you flipped the PROP from one to the other. I am going to convert this to an issue.