MODEL: Two_Tanks_Water_SEQUATIONS FOR BERKELEY MADONNA   {Reservoirs}   d/dt (V1) = - IV      INIT V1 = A1*h1_init   d/dt (V2) = + IV      INIT V2 = A2*h2_init   {Flows}   IV = k*SQRT(h1-h2)   {Functions}   A1 = PI*0.10^2   h1 = V1/A1   h2 = V2/A2   A2 = PI*0.148^2   k = 7.3e-5   h1_init = 0.173   h2_init = 0.0297