State principle for simple compressible system Gas →p=TW,i,W.… +V- Gas →fTp),u=fT,p),… Gas -→T=fv,p,u=fy,p),… Intensive properties such as velocity and elevation that are assigned values relative to datums outside the system are excluded from present considerations. 上游充通大 March 12,2019 4 SHANGHAI JLAO TONG UNIVERSITYMarch 12, 2019 4 State principle for simple compressible system Gas T +v p=f(T,v), i=f(T, v), … Gas T +p v=f(T,p), u=f(T, p), … Gas v +p T=f(v,p), u=f(v, p), … Intensive properties such as velocity and elevation that are assigned values relative to datums outside the system are excluded from present considerations