Isentropic Process

In thermodynamics, an isentropic process or isoentropic process (ισον = "equal" (Greek); εντροπία entropy = "disorder"(Greek)) is one in which for purposes of engineering analysis and calculation, one may assume that the process takes place from initiation to completion without an increase or decrease in the entropy of the system, i.e., the entropy of the system remains constant. It can be proven that any reversible adiabatic process is an isentropic process. A simple more common definition of isentropic would be " No change in entropy".

Read more about Isentropic ProcessBackground, Isentropic Flow

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Brayton Cycle - Models
... engine, ambient air is drawn into a piston compressor, where it is compressed ideally an isentropic process ... chamber where fuel is added, an isobaric process ... products to expand through a piston/cylinder another ideally isentropic process ...

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