Water Particle Dragged Up

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Fire01 Arup

Sep 18, 2022, 10:57:20 PMSep 18
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Hi All,

I am simulating a model of storage rack with sprinkler spray. I did a trial, and found that water particles can be dragged up by the fire (see attached figure 1). Is this condition normal in FDS? 
Figure 1.pdf


Sep 19, 2022, 6:02:30 AMSep 19
to FDS and Smokeview Discussions
Droplets have a terminal velocity that is a function of their diameter. If the terminal velocity is small enough compared to the upward velocity in the fire plume velocity, then the particles can  be entrained in the upward flow. 
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