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Plots

This section shows plots obtained from results of mixing pipe of PID controller simulation. The steps to create the plots are:

1. Click Load Results in the Simulation Panel.
2. Select the pid_controller.sres result file in the ensuing Load Results dialog box, click Open.

 

Control Variable

The control variable is monitored till the stable set point value is achieved.

1. Click Add XY-Plot icon in the Toolbar.
2. Click Click for Variable List icon, select Control Variable under Controller heat in the Plot Panel.
3. Click Plot Selected Variables icon to obtain the control variable.

 

Error

The error value at outlet is monitored to check error value at each iteration, which is reducing with desired set point value. It is obtained as follows:

1. Click Add XY-Plot icon in the Toolbar.
2. Click Click for Variable List icon in Plot Panel toolbar, select Error under Controller heat in the Plot Panel.
3. Click Plot Selected Variables icon to obtain the error value at outlet.

 

Note: The above plot shows difference in calculated temperature and set point value as error value at each iteration.

 

Outlet Temperature

The temperature is monitored at pipe outlet. It is obtained as follows:

1. Select pipe_outlet under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon, select Temperature under Heat in the Plot Panel.
4. Click Plot Selected Variables icon to obtain the temperature value at outlet.

 

Volumetric Flux- Hot fluid Inlet

The flow rate is monitored at hot fluid inlet, which is varying at each iteration till a set point value is achieved. It is obtained as follows:

1. Select pipe_hot_inlet under Boundaries in the Geometric Entities Panel.
2. Click Add XY-Plot icon in the Toolbar.
3. Click Click for Variable List icon, select Volumetric Flux under Flow in the Plot Panel.
4. Click Plot Selected Variables icon. In the Plot Property dialog box, select L/min for Units. Click OK.