Index: mttroot/mtt/lib/examples/Thermal/GasTurbines/SimpleGasTurbine/SimpleGasTurbine_desc.tex ================================================================== --- mttroot/mtt/lib/examples/Thermal/GasTurbines/SimpleGasTurbine/SimpleGasTurbine_desc.tex +++ mttroot/mtt/lib/examples/Thermal/GasTurbines/SimpleGasTurbine/SimpleGasTurbine_desc.tex @@ -5,10 +5,13 @@ % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %% Version control history % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %% $Id$ % %% $Log$ +% %% Revision 1.1 1998/05/18 15:45:50 peterg +% %% Initial revision +% %% % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% The acausal bond graph of system \textbf{SimpleGasTurbine} is displayed in Figure \Ref{SimpleGasTurbine_abg} and its label file is listed in Section \Ref{sec:SimpleGasTurbine_lbl}. @@ -18,17 +21,16 @@ turbine (producing shaft power) with an ideal-gas working fluid. It corresponds to the simple Joule Cycle as described in Chapter 12 of Rogers and Mayhew and in Chapter 2 of Cohen, Rogers and Saravanamutto. However, unlike those examples, the system is written with dynamics in mind. - -The system is described using an energy Bond Graph- this ensures -that the first law is observed. In particular (for I believe the first -time) transformers are used to explicitly convert between energy -covariables. Although this is a simple model, I believe that it -provides the basis for building complex thermodynamic systems -involving gas power cycles. + + The system is described using an energy Bond Graph- this ensures + that the first law is observed. In particular transformers are used + to explicitly convert between energy covariables. Although this is + a simple model, I believe that it provides the basis for building + complex thermodynamic systems involving gas power cycles. There are five main components: \begin{enumerate} \item p1 -- a \textbf{Pump} component representing the compressor @@ -63,11 +65,11 @@ (power sensor) component, that for work output is embedded in the \textbf{Load} component. These can be monitored to give the efficiency of the \textbf{SimpleGasTurbine}. A symbolic steady-state for the model was computed -- see Section -\ref{sec:SimpleGasTurbine_sspar.tex}. In particular, the load +\ref{sec:SimpleGasTurbine_ss.tex}. In particular, the load resistance was chosen to absorb all the generated work at the steady state and the shaft inertia was chosen to give a unit time constant for the linearised system. The mass flow and shaft speeds were taken as unity. @@ -79,24 +81,24 @@ Simulations were performed starting at the steady state and increasing the combustion chamber temperature by 10\% at $t=1$ and reducing by 10\% at $t=5$. Graphs of the various outputs are plotted: \begin{itemize} \item Figure - \Ref{fig:SimpleGasTurbine_odeso.ps-SimpleGasTurbine-p1-T,SimpleGasTurbine-c1-T,SimpleGasTurbine-t1-T} + \Ref{fig:SimpleGasTurbine_odeso-SimpleGasTurbine-comp-1-T,SimpleGasTurbine-c1-1-T,SimpleGasTurbine-turb-1-T.ps} -- the temperatures at the output of the \begin{itemize} \item compressor, \item combustion chamber and \item turbine \end{itemize} \item Figure - \Ref{fig:SimpleGasTurbine_odeso.ps-SimpleGasTurbine-Heat,SimpleGasTurbine-Work} + \Ref{fig:SimpleGasTurbine_odeso-SimpleGasTurbine-fuel-1-Heat-1-y,SimpleGasTurbine-load-1-Work-1-y.ps} -- the heat input and work output \item Figure - \Ref{fig:SimpleGasTurbine_odeso.ps-SimpleGasTurbine-Speed} -- the shaft speed and + \Ref{fig:SimpleGasTurbine_odeso-SimpleGasTurbine-shaft-1-speed-1-y.ps} -- the shaft speed and \item Figure - \Ref{fig:SimpleGasTurbine_odeso.ps-SimpleGasTurbine-p1-P,SimpleGasTurbine-c1-P,SimpleGasTurbine-t1-P} + \Ref{fig:SimpleGasTurbine_odeso-SimpleGasTurbine-c1-1-P.ps} -- the pressure at the output of the \begin{itemize} \item compressor, \item combustion chamber and \item turbine