- The FeedCon0, FeedTemp0 and Coolant Temp blocks model the feed concentration,
feed temperature, and coolant temperature inputs respectively. - The T and CA ports of the CSTR block model the reactor temperature and residual
concentration outputs respectively.
This example focuses on the response from coolant temperature, Coolant Temp, to
residual concentration, CA, when the feed concentration and feed temperature are
constant.
For more information on modeling reactors, see Seborg, D.E. et al., "Process Dynamics
and Control", 2nd Ed., Wiley, pp.34-36.
Plotting the Reactor Linear Response
The reactor model contains a Bode Plot block from the Simulink Control Design Linear
Analysis Plots library. The block is configured with:
- A linearization input at the coolant temperature Coolant Temp.
- A linearization output at the residual concentration CA.
The block is also configured to perform linearizations on the rising edges of an external
trigger signal. The trigger signal is computed in the Linearization trigger signal
block which produces a rising edge when the residual concentration is:
- At a steady state value of 2
- In a narrow range around 5
- At a steady state value of 9
Double-clicking the Bode Plot block lets you view the block configuration.
Plotting Linear System Characteristics of a Chemical Reactor