This simulation lab is a dual gravity drained tank as an example of a second order and nonlinear system. Additional information on the application is available with the following video:
There is also an Excel workbook that allows users to import data from the simulation to fit a first order plus dead time (FOPDT) model. Below is link to other course content that includes other simulation studies in MATLAB and Simulink:
John Hedengren (2020). Simulink Dual Gravity Drained Tank (https://www.mathworks.com/matlabcentral/fileexchange/48017-simulink-dual-gravity-drained-tank), MATLAB Central File Exchange. Retrieved .
Added figure of the dual tank system