%SUMMARY RG CR for 2 port gas dymanics R: isentropic nozzle
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% % Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% % $Id$
% % $Log$
% % Revision 1.1 1998/03/04 15:37:48 peterg
% % Initial revision
% %
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
OPERATOR RG;
% Port 1 : Enthalpy flow
FOR ALL COMP, gamma,R,A,T_u,P_u,T_d,P_d
LET RG(COMP, gamma,R,A, flow, 1,
T_u,effort,1,
P_u,effort,2,
T_d,effort,3,
P_d,effort,4)
= A*( P_u/sqrt(T_u) )
*sqrt( (2*gamma)/(R*(gamma-1)) )
*sqrt( (P_d/P_u)^(2/gamma) - (P_d/P_u)^((1+gamma)/gamma) )
*(gamma/(gamma-1))*R*T_u;
% Port 2 : Mass flow
FOR ALL COMP, gamma,R,A,T_u,P_u,T_d,P_d
LET RG(COMP, gamma,R,A, flow, 2,
T_u,effort,1,
P_u,effort,2,
T_d,effort,3,
P_d,effort,4)
= A*( P_u/sqrt(T_u) )
*sqrt( (2*gamma)/(R*(gamma-1)) )
*sqrt( (P_d/P_u)^(2/gamma) - (P_d/P_u)^((1+gamma)/gamma) );
% Port 3 : Enthalpy flow
FOR ALL COMP, gamma,R,A,T_u,P_u,T_d,P_d
LET RG(COMP, gamma,R,A, flow, 3,
T_u,effort,1,
P_u,effort,2,
T_d,effort,3,
P_d,effort,4)
= A*( P_u/sqrt(T_u) )
*sqrt( (2*gamma)/(R*(gamma-1)) )
*sqrt( (P_d/P_u)^(2/gamma) - (P_d/P_u)^((1+gamma)/gamma) )
*(gamma/(gamma-1))*R*T_u;
% Port 4 : Mass flow
FOR ALL COMP, gamma,R,A,T_u,P_u,T_d,P_d
LET RG(COMP, gamma,R,A, flow, 4,
T_u,effort,1,
P_u,effort,2,
T_d,effort,3,
P_d,effort,4)
= A*( P_u/sqrt(T_u) )
*sqrt( (2*gamma)/(R*(gamma-1)) )
*sqrt( (P_d/P_u)^(2/gamma) - (P_d/P_u)^((1+gamma)/gamma) );
END;;