function y = simplifiedModel(u)
    par = MiniLoop_parameters;
    z = u(1)/100;
    Pin = u(2)*1e3 + par.P0; 
    Prt = u(3)*1e3 + par.P0;
    Prb = u(4)*1e3 + par.P0; 
    ytemp = very_Simple_model10([z,Pin,Prt,Prb],par);
    y=real(ytemp);
end