Merge pull request #14999 from drjfloyd/master

FDS Source: Set MAXIMUM_SCALING_HEAT_FLUX

Author: drjfloyd

Manuals/FDS_User_Guide/FDS_User_Guide.tex

@@ -2837,7 +2837,7 @@ \subsection{Scaling Pyrolysis (SPyro) Model: Scaled Burning Rate from Cone Data}
 There are other optional parameters which can be used to adjust the model behavior, which are described below.
 
 \begin{itemize}
-\item \ct{MAXIMUM_SCALING_HEAT_FLUX} By default the model does not set an upper limit on the predicted heat flux used to scale the test data (Default 100,000 \unit{kW/m^2}).
+\item \ct{MAXIMUM_SCALING_HEAT_FLUX} The upper limit on the predicted heat flux used to scale the test data (Default 1500 \unit{kW/m^2}).
 \item \ct{MINIMUM_SCALING_HEAT_FLUX} By default the model does not set a lower limit on the predicted heat flux used to scale the test data. Setting a lower bound to the flux used for scaling may help the model predictions in some cases such as weakly burning sources on coarse grids which may have poorly resolved heat feedback (Default 0 \unit{kW/m^2}).
 \item \ct{REFERENCE_HEAT_FLUX_TIME_INTERVAL} The instantaneous heat feedback in FDS can vary greatly from time step to time step. In an actual fire the burning rate is tied to the sample temperature, and thermal inertia means the burning rate changes more slowly than then instantaneous flux. This natural smoothing can be approximated by setting a smoothing window using \ct{REFERENCE_HEAT_FLUX_TIME_INTERVAL} in s (Default 1~s).
 \end{itemize}
@@ -13618,7 +13618,7 @@ \section{\texorpdfstring{{\tt SURF}}{SURF} (Surface Properties)}
 \ct{MASS_TRANSFER_COEFFICIENT}                         & Real            & Section~\ref{info:liquid_fuels}           & m/s                 &                         \\ \hline
 \ct{MATL_ID(:,:)}                                       & Char.~Array     & Section~\ref{info:solid_pyrolysis}        &                     &                         \\ \hline
 \ct{MATL_MASS_FRACTION(:,:)}                           & Real Array      & Section~\ref{info:solid_pyrolysis}        &                     &                         \\ \hline
-\ct{MAXIMUM_SCALING_HEAT_FLUX}                        & Real            & Section~\ref{info:scaled_burning}         & \si{kW/m^2}         &                         \\ \hline
+\ct{MAXIMUM_SCALING_HEAT_FLUX}                        & Real            & Section~\ref{info:scaled_burning}         & \si{kW/m^2}         & 1500                     \\ \hline
 \ct{MCC_CONVERSION_FACTOR}                              & Real            & Section~\ref{info:TGA_DSC_MCC}            &                     & 1                       \\ \hline
 \ct{MINIMUM_BURNOUT_TIME}                              & Real            & Section~\ref{veg_burnout_time}            & s                   & 1000000                 \\ \hline
 \ct{MINIMUM_LAYER_THICKNESS}                           & Real            & Section~\ref{info:solid_phase_stability}  & m                   & 1.E-4                   \\ \hline

Source/read.f90

@@ -9015,7 +9015,7 @@ SUBROUTINE SET_SURF_DEFAULTS
 MATL_MASS_FRACTION      = 0._EB
 MATL_MASS_FRACTION(:,1) = 1._EB
 MINIMUM_SCALING_HEAT_FLUX = 0._EB
-MAXIMUM_SCALING_HEAT_FLUX = 1.E9_EB
+MAXIMUM_SCALING_HEAT_FLUX = 1500._EB
 MINIMUM_BURNOUT_TIME    = 1.E6_EB
 MINIMUM_LAYER_MASS_FRACTION = 1.E-12_EB
 MINIMUM_LAYER_THICKNESS = -1.E-6_EB  ! The absolute value is the default, m