Four particular cases n=0 D=const. (isobaric process;constant pressure process) n=1 pv =const. (isothermal process;constant temperature process) pV"=p2'2” n=K DyA =const. (isentropic process;reversible adiabatic process) For ideal gas:adiabatic index K =k(specific heat ratio) n=士o∞ V=const. (isometric/isochoric process;constant volume process) 上游充通大学 March 25,2019 4 SHANGHAI JIAO TONG UNIVERSITYMarch 25, 2019 4 Four particular cases 1 1 2 2 n n p V p V  n p   0 const. n pv   1 const. n pv const.     n v   const. (isobaric process; constant pressure process) (isometric/isochoric process; constant volume process) (isentropic process; reversible adiabatic process) (isothermal process; constant temperature process) For ideal gas: adiabatic index = k (specific heat ratio) 