편미분 관계식
partial differential relations
열역학에서 z의 전미분이
exact이면 상태량(property) 이고 변화량은 으로 표기한다
inexact이면 경로함수(path function) 이고 변화량은으로 표기한다. [1] (δQ, δW, δSgen 등이 이에 해당)
every property is exact. The differentials of nonproperties such as work and heat are inexact. [2]
An inexact differential or imperfect differential is a specific type of differential used in thermodynamics to express the path dependence of a particular differential. [3]
dz와 dy는 independent 하므로
reciprocity relation
cyclic relation
dw와 dz는 independent 하므로
chain rule
이 식은 Mayer 관계식 Mayer's relation에 쓰임
[열역학 Thermodynamics/문제와 풀이 Problems and Solutions] - cp-cv 증명 - Mayer 관계식 (Mayer's relation) 유도 문제
[열역학 Thermodynamics/12. 일반관계식 Thermodynamic Relations ] - Mayer 관계식 Mayer's relation
[1] 차재복. (2018, October 2). 상태 함수 [정보통신기술용어해설] [Web log post]. Retrieved October 25, 2018, from http://www.ktword.co.kr/abbr_view.php?m_temp1=4667
[2] Moran, Michael J.; Shapiro, Howard N. (2014). Fundamentals of Engineering Thermodynamics (8th ed.). John Wiley and Sons. p. 662.
[3] Wikipedia contributors. (2018, April 24). Inexact differential. In Wikipedia, The Free Encyclopedia. Retrieved October 25, 2018, from https://en.wikipedia.org/w/index.php?title=Inexact_differential&oldid=837993966
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