Aspen design specifications and sensitivity analysis
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Personally, I think these two modules have a great deal in common in terms of program implementation; in fact, they can even be said to be very similar. It should be that when the degree of freedom of the operation unit module is equal to one, a specified variable (that is, this variable degree of freedom) is defined. Observe how the target variable changes with this parameter. The difference is that the design specifications should also include a selection algorithm, that is, to find the direction toward the goal. It is about in which direction the parameters should change in order to meet the design specifications. For sensitivity analysis, it is necessary to set a step size and perform calculations sequentially. And retain the target value for calculation, corresponding to the selection of parameters. In the dstwu module, calculating the relationship between the number of theoretical plates and the reflux ratio should be an application of sensitivity analysis. I’m not sure if my understanding is correct; please feel free to correct me.
“Is the statement \"When the degree of freedom of the operation unit module is equal to one, ...\" correct?
“When the degree of freedom of the operation unit module is equal to one,......” does it mean that there is only one operational variable?
The number of degrees of freedom is equal to the number of design variables, which are further divided into fixed design variables and adjustable design variables.