โ Scribed by A. Brambilla; A. Carracciolo di Forino; R. Celati; J.H. Kardasz; G. Nardini
No coin nor oath required. For personal study only.
The paper contains a classification and solution of the partial differential equations derived from one dimensional models of devices working in a chemical plant in unsteady state.
It is shown that, when the flow rates and the hold-ups are constant along an apparatus, the system of partial differential equations characterising the device is hyperbolic, and that in this case, the arising difference equations in explicit form are linear in the new values of the unknowns.
An example of the calculation of the dynamic behaviour of a plant including temperatures and compositions controls is given as an application.
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