%SUMMARY LeakyCylinder: Pseudo bond graph model of compressible gas dynamics

%DESCRIPTION This example roughly corresponds to the Example in
%DESCRIPTION section 12.4.3 (Fig. 12.17) of Karnopp, Margolis and Rosenberg
%DESCRIPTION (1990). It is a pseudo bond graph representation based on the
%DESCRIPTION "thermal acummulator" of section 12.4.1 and the "isentropic
%DESCRIPTION nozzle" of section 12.4.2 of that book.

%% Label file for system LeakyCylinder (LeakyCylinder_lbl.txt)

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
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%% 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 CG
	bottom		none	c_v;r
	top		none	c_v;r

% Component type LeakyPiston
	piston		none	m_p;a_b;a_t;gamma;r;0

% Component type SS
	shaft		external	external

%SUMMARY LeakyPiston: Leaky piston sub model
%DESCRIPTION <Detailed description here>
%% Label file for system LeakyPiston (LeakyPiston_lbl.txt)

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% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
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%% 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 Piston
	piston		lin	$1;$2;$3

% Component type RG
	leak		lin	$4;$5;$6

% Component type SS
	[mass_b]		external	external
	[mass_t]		external	external
	[mechanical_b]		external	external
	[mechanical_t]		external	external
	[shaft]		external	external
	[thermal_b]		external	external
	[thermal_t]		external	external

%SUMMARY Piston: simple model of the piston
%DESCRIPTION Inludes inertia and pressure effects.
%% Label file for system Piston (Piston_lbl.txt)

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% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
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%% 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 I
	m_p		lin	flow,$1

% Component type SS
	[bottom]		external	external
	[shaft]		external	external
	[top]		external	external

% Component type TF
	a_b		lin	flow,$2
	a_t		lin	effort,$3