MATL, SPEC
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jxh...@163.com
Oct 9, 2007, 8:31:26 AM10/9/07
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some fundamental questions
1.
the MATL is for solid or liquid, the SPEC is for gas. RIGHT?
thanks
2.
the REAC is simple for MATL by specifying FUEL=1. If considering
reactions of species, you must input finite rate parameters.
RIGHT?
1.
the MATL is for solid or liquid, the SPEC is for gas. RIGHT?
thanks
2.
the REAC is simple for MATL by specifying FUEL=1. If considering
reactions of species, you must input finite rate parameters.
RIGHT?
Kevin
Oct 9, 2007, 9:00:20 AM10/9/07
to FDS and Smokeview Discussions
If you cannot find answers to questions like these, please tell us
which parts of the FDS User's Guide you do not understand. We have
tried to add fairly simple explanatory text at the beginning of each
chapter to clarify the purpose of the major input parameter groups.
which parts of the FDS User's Guide you do not understand. We have
tried to add fairly simple explanatory text at the beginning of each
chapter to clarify the purpose of the major input parameter groups.
Khalid Moinuddin
Oct 16, 2007, 2:07:19 AM10/16/07
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Kevin,
I also feel there is not adequate explanation of how to specify
multiple layers of an obstacle. Section 8.4 (page 52 of User's guide)
has not explained clearly the array MATL_ID(IL,IC), MATL_ID(1,1:2)
etc. For example, if I now want to simulate a two-layer wall of a room
whose internal layer is steel and the external layer is plasterboard,
I can specify it as MATL_ID='STEEL','PLASTERBOARD'. Can FDS recognize
which layer (steel) is internal? For the wall opposite side of the
room, should the layer arrangement be different?
I also feel there is not adequate explanation of how to specify
multiple layers of an obstacle. Section 8.4 (page 52 of User's guide)
has not explained clearly the array MATL_ID(IL,IC), MATL_ID(1,1:2)
etc. For example, if I now want to simulate a two-layer wall of a room
whose internal layer is steel and the external layer is plasterboard,
I can specify it as MATL_ID='STEEL','PLASTERBOARD'. Can FDS recognize
which layer (steel) is internal? For the wall opposite side of the
room, should the layer arrangement be different?
Regards,
Khalid
dr_jfloyd
Oct 16, 2007, 6:14:36 AM10/16/07
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First layer is on the IOR face of the OBST or vent and other layers go
in depth. So the +x face of the OBST or VENT has layers increasing to
-x and vice versa.
in depth. So the +x face of the OBST or VENT has layers increasing to
-x and vice versa.
On Oct 16, 2:07 am, Khalid Moinuddin <Khalid.Moinud...@vu.edu.au>
wrote:
Khalid Moinuddin
Oct 16, 2007, 7:04:42 PM10/16/07
to fds...@googlegroups.com
Thanks, Jason.
Do we have to specify the IOR (index of orientation) face in the OBST
line? Or FDS considers the face towards the fire as an IOR face? I tried
to put IOR in the OBST line and it gave me error.
Do we have to specify the IOR (index of orientation) face in the OBST
line? Or FDS considers the face towards the fire as an IOR face? I tried
to put IOR in the OBST line and it gave me error.
Regards,
Khalid
dr_jfloyd
Oct 16, 2007, 10:39:21 PM10/16/07
to FDS and Smokeview Discussions
Sorry, my previous post could have been clearer. For an OBST on each
face the layers will begin on the surface of that face and end on the
opposite face. Thus:
face the layers will begin on the surface of that face and end on the
opposite face. Thus:
If you had a zero or one cell thick obst that was a multi-layer
surface with both sides exposed to the interior of the domain and
BACKING='EXPOSED' then you should define two SURFs one the reverse of
the other and apply to the opposite sides of the OBST.
On Oct 16, 7:04 pm, "Khalid Moinuddin" <Khalid.Moinud...@vu.edu.au>
wrote:
> > Khalid- Hide quoted text -
>
> - Show quoted text -
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