Merge pull request firemodels#12369 from mcgratta/master

FDS Source: Issue firemodels#12320. Add INTERNAL_HEAT_SOURCE to OBST table
ahsadeghi · Jan 13, 2024 · 64f51df · 64f51df
2 parents 3b16ca3 + 4274b05
commit 64f51df
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/Manuals/FDS_User_Guide/FDS_User_Guide.tex b/Manuals/FDS_User_Guide/FDS_User_Guide.tex
@@ -2388,10 +2388,7 @@ \subsection{Specified Internal Heat Source}
 internal absorption and emission of radiation (see Sec.~\ref{info:liquid_fuels}), and the source specified by the user.
 An example of the case where specified heat source could be needed is the heating of electrical cables due to internal current.
 
-You can specify the internal source term for each layer of the surface using {\ct INTERNAL\_HEAT\_SOURCE} on the {\ct SURF} line.
-Its units are {\si kW/m$^3$} and the default value is zero.
-In the example below, the cylindrical surface describing a cable consists of an outer plastic layer and inner core of metal.
-The metal core is heated with a power of 300 {\si kW/m$^3$}.
+You can specify the internal source term for each layer of the surface using {\ct INTERNAL\_HEAT\_SOURCE} on the {\ct SURF} line. Its units are {\si kW/m$^3$} and the default value is zero. In the example below, the cylindrical surface describing a cable consists of an outer plastic layer and inner core of metal. The metal core is heated with a power of 300 {\si kW/m$^3$}.
 \begin{lstlisting}
 &SURF ID                     = 'Cable'
       THICKNESS              = 0.002,0.008
@@ -2469,6 +2466,7 @@ \subsection{Basics}
 \end{lstlisting}
 Parameters that are used to control the solid phase gridding are typically given on the {\ct OBST} line instead of the {\ct SURF} line. In this example, the {\ct MATL\_ID} is specified on the {\ct OBST} line. You can specify a uniformly-spaced grid using the parameter {\ct CELL\_SIZE} (m) or you can stretch the grid using the parameters {\ct STRETCH\_FACTOR} and {\ct CELL\_SIZE\_FACTOR}. You can also limit the number of grid cells using {\ct N\_LAYER\_CELLS\_MAX}. These parameters are explained in Sec.~\ref{info:solid_phase_stability}, but when specified on an {\ct OBST} line, these parameters are scalars and refer to the single layer formed by that particular obstruction. If these parameters are not specified on the {\ct OBST} line, they will be taken from the first layer specified on the {\ct SURF} line, and if not specified there, they will take on the default values listed in Sec.~\ref{info:solid_phase_stability}.
 
+You can specify an internal source for the solid obstruction using {\ct INTERNAL\_HEAT\_SOURCE} on the {\ct OBST} line. Its units are {\si kW/m$^3$} and the default value is zero.
 
 \subsection{Limitations}
 \label{info:HT3D_Limitations}
@@ -12283,6 +12281,7 @@ \section{\texorpdfstring{{\tt OBST}}{OBST} (Obstruction Parameters)}
 {\ct DEVC\_ID }               & Character       & Section~\ref{info:activate_deactivate}  &           &               \\ \hline
 {\ct HEIGHT}                  & Real            & Section~\ref{info:multobst}             & m         &               \\ \hline
 {\ct ID }                     & Character       & Section~\ref{info:OBST_Basics}          &           &               \\ \hline
+{\ct INTERNAL\_HEAT\_SOURCE}  & Real            & Section~\ref{info:HT3D_Basics}          & kW/m$^3$  & 0.            \\ \hline
 {\ct LENGTH}                  & Real            & Section~\ref{info:multobst}             & m         &               \\ \hline
 {\ct MATL\_ID(:) }            & Char.~Array     & Section~\ref{info:ht1d}                 &           &               \\ \hline
 {\ct MATL\_MASS\_FRACTION(:)} & Real~Array      & Section~\ref{info:ht1d}                 & kg/kg     &               \\ \hline