what is the difference between balance and constitutive equations?
Balance equations describe the time-varying development of extensive quantities such as mass and energy.
constitutive equations give relations between the balanced quantities and further process variables
What is the di erence between extensive and intensive process quantities? Give an example for each.
Extensive quantities (e.g. mass) scale with the balanced volume, intensive quan tities (e.g. temperature) don't.
Describe the difference between a signal transformer and a generalized phase.
A signal transformer arbitrarily transforms incoming information. A generalized phase, however, models the corresponding balance volume in physically motivated manner by considering balance equations and constitutive equations.
Which modeling objects are suitable for describing the mass transport across the phase boundary between two immiscible liquids?
Types of modeling objects:
2-film-connection
signal connection/signal transformer
Types of modeling objects: ˆ 2- lm-connection (0.75 point) ˆ signal connection/signal transformer (0.75 point
Electrical, magnetic, centrifugal and gravitational forces
We distinguish integral modeling of an ideally-mixed phase and integral modeling of a non ideally-mixed phase. What is the diffrence?
Ideally-mixed means spatial uniformity, i.e., there is no spatial dependence of quantities like temperature, concentration or enthalpy. Then, the state of a leaving stream is identical to the state of the balanced volume.
An algebraic equation system can be unsolvable even if the corresponding incidence matrix has full rank. Why?
Redundant or contradicting equations (e.g., linear dependency)
Zuletzt geändertvor einem Monat