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User & Date: | gawthrop@users.sourceforge.net on 1998-07-21 15:25:50 |
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Context
1998-07-21
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16:13:20 | Sorted out errors in the equations check-in: e479e36883 user: gawthrop@users.sourceforge.net tags: origin/master, trunk | |
15:25:50 | Initial revision check-in: 0da63e7c3f user: gawthrop@users.sourceforge.net tags: origin/master, trunk | |
15:18:18 | Initial revision check-in: 101c45bcc1 user: gawthrop@users.sourceforge.net tags: origin/master, trunk | |
Changes
Added mttroot/mtt/lib/examples/Thermal/ThermodynamicCycles/DieselCycle/DieselCycle_desc.tex version [ea96ae646d].
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | % Verbal description for system DieselCycle (DieselCycle_desc.tex) % Generated by MTT on Thu Dec 4 15:59:55 GMT 1997. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %% Version control history % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %% $Id$ % %% $Log$ % Revision 1.1 1997/12/09 12:30:26 peterg % Initial revision % % Revision 1.1 1997/12/08 09:37:04 peterg % Initial revision % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% The acausal bond graph of system \textbf{DieselCycle} is displayed in Figure \Ref{DieselCycle_abg} and its label file is listed in Section \Ref{sec:DieselCycle_lbl}. The subsystems are listed in Section \Ref{sec:DieselCycle_sub}. The Diesel cycle is a simple closed thermodynamic cycle with four parts: \begin{enumerate} \item Isentropic compression \item Heating at constant pressure \item Isentropic expansion \item Cooling at constant volume \end{enumerate} The subsystem \textbf{Cycle} (Section \Ref{sec:Cycle}) is a two-port component describing an ideal gas. It has two energy ports which, with integral causality correspond to \begin{enumerate} \item Entropy flow in; temperature out \item Volume rate of change in; pressure out \end{enumerate} In contast to the Otto cycle (see Table \Ref{tab:cycles} where each table entry gives the causality on the heat and work ports respectively). The ideal Diesel cycle has derivative causality on the {\bf [Work]} port for one part of the cycle. To avoid this causality change, the Diesel cycle is approximated by applying the volume change from a pressure source via a resistance {\bf R} component. During the {\em heat injection\/} part of the cycle, the resistance parameter $r\approx 0$, but during the other parts of the cycle, the resistance parameter $r\approx \inf$. The simulation parameters appear in Section \Ref{sec:DieselCycle_numpar.txt}. The results are plotted against time as follows: \begin{itemize} \item Volume (Figure \Ref{fig:DieselCycle_odeso.ps-DieselCycle-cycle-V}) \item Pressure (Figure \Ref{fig:DieselCycle_odeso.ps-DieselCycle-cycle-P}) \item Entropy (Figure \Ref{fig:DieselCycle_odeso.ps-DieselCycle-cycle-S}) \item Temperature (Figure \Ref{fig:DieselCycle_odeso.ps-DieselCycle-cycle-T}) \end{itemize} These values are replotted as the standard PV and TS diagrams in Figures \Ref{fig:DieselCycle_odeso.ps-DieselCycle-cycle-V:DieselCycle-cycle-P} and \Ref{fig:DieselCycle_odeso.ps-DieselCycle-cycle-S:DieselCycle-cycle-T} respectively. |
Added mttroot/mtt/lib/examples/Thermal/ThermodynamicCycles/DieselCycle/DieselCycle_lbl.txt version [af8cc4d544].
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | %SUMMARY DieselCycle:a simple closed thermodynamic cycle %DESCRIPTION The Diese cycle is a simple closed thermodynamic cycle %DESCRIPTION with four parts: %DESCRIPTION o Isentropic compression %DESCRIPTION o Heating at constant pressure %DESCRIPTION o Isentropic expansion %DESCRIPTION o Cooling at constant volume %% Label file for system DieselCycle (DieselCycle_lbl.txt) % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %% Version control history % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % %% $Id$ % %% $Log$ % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% Each line should be of one of the following forms: % a comment (ie starting with %) % Component-name CR_name arg1,arg2,..argn % blank % Component type Cycle cycle % Component type R r lin flow,r % Component type SS Heat SS internal,external Work SS external,internal |