Ticket #71: sample_msg.mso

using "types";


FlowSheet Test
        PARAMETERS
        k as Real (Brief="Valve Constant", Unit = 'm^2.5/h', Default=4);
        A as area (Brief="Tank area", Default=2);
        
        VARIABLES
        h    as length(Brief="Tank level");
        Fin  as flow_vol(Brief="Input flow");
        Fout as flow_vol(Brief="Output flow");

        EQUATIONS
        "Mass balance"
        diff(A*h) = Fin - Fout;
        
        "Valve equation"
        Fout = k*(-h)^0.5;      # error introduced to check the msg

        SET
        k = 8 * 'm^2.5/h';
        A = 4 * 'm^2';

        SPECIFY
        "Vazao de entrada"
        Fin = 10 * 'm^3/h';

        INITIAL
        "altura inicial"
        h = 1 * 'm';
        
        OPTIONS
        TimeStep = 0.1;
        TimeEnd = 5;
        TimeUnit = 'h' ;
end