by Thiago G. Monteiro, Synnøve Nesdal Sandnes and Henrique M. Gaspar (hega @ hials.no), v0.1, Jan 2016.
A Ship Design and Operations Lab App.
Parameters for user input
Area of tank 1 [m2] 1
Area of tank 2 [m2] 0.5
Initial Height of tank 1 [m] 1.5
Initial Height of tank 2 [m] 1.2
Final Height of tank 1 [m] 1.35
Final Height of tank 2 [m] 1.35
Pipe length [m] 30
Pipe diameter [m] 0.3
Pipe roughness [m] 0.0001
Liquid density [kg/m3] 1000
Liquid viscosity 0.0001
Acceleration of Gravity [m/s2] 9.81
Simulation time [s] 1000
Pump Capacity [m3/s] 1000
Problem Scheme
Assumptions
The simulation runs until the desired state (tanks level) is reached. If the desired state occurs beyond the assigned simulation time, just increase the Simulation time parameter.
System flowrate is composed by one component from the static pressure due to the different levels of tanks (non-linear) and another component due to the Pump action (linear).
With a pump capacity of zero the system will equilibrate itself based only on the static pressure.
The only loss considered in the system is due to the fluid flow in the pipe connecting the tanks.