An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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polytropic process
  فراروند ِ بُلگشتی  
farâravand-e bolgašti
Fr.: processus polytropique  

A thermodynamic process that obeys the relation: PVn = C, where P is pressure, V is volume, n is any real number, called the → polytropic index, and C is a constant.

If n = 0, then P = C and it is an → isobaric process.
If n = 1, then for an → ideal gas PV = NkT = C and it is an → isothermal process.

If n = γ, → adiabatic index, then for an ideal gas it is an → adiabatic process.

See also: → polytropic; → process.