what is MLR fuel vapor?

[Ankit Patil]

Please check in attachment, I am sending screen shot about graph of MLR fuel vapor, what is that? what this graph is showing?

Best regards,

Ankit

[dr_jfloyd]

If you are asking what this column represents?

This column is the rate of production of the species FUEL_VAPOR which I suspect is the FUEL species on your &REAC input.

FDS User's Guide 21.10.3  Mass Loss Rates

The rate at which gas species are generated at solid surfaces, solid particles, or liquid droplets is recorded
in the file CHID_hrr.csv. This file is automatically generated; the only input parameters associated with
it are DT_HRR and RAMP_HRR on the DUMP line. This file contains quantities related to the energy budget
(Section 21.10.1), and the pressures of user-designated pressure zones (Section 21.10.4). The generation
rates of all lumped gas species are given in units of kg/s.

If you are asking why the curve has the shape it has?

Add suffiicent ouptuts to your FDS input file to allow you to determine why and where in the domain this fuel is being generated.

[Ankit Patil]

Sir, can we identify the different gas species generated?

Add sufficient output means ? Any devices or slices ?

[dr_jfloyd]

What species did you tell FDS to inject into the domain with your inputs? That is the species being generated.

In terms of what outputs are available for species see the chapter on outputs in the User's Guide.