- 著者一覧
- Ishida Takeshi

# Ishida Takeshi

Id (<span class="translation_missing" title="translation missing: en.view.desc">Desc</span>)

Journal of National Fisheries University Volume 70 Issue 3
pp. 101 - 113

published_at 2022-01

Learners of thermodynamics learn a basic thermodynamic state quantity “entropy” which is challenging to understand owing to multiple reasons. First, entropy is explained using multiple defining equations； intuitively understanding the meaning from the equations can be difficult. Second, entropy is often explained in terms of “clutter” and “disorder” of energy； however, the correspondence between these concepts and the defining equation is not obtained intuitively. Therefore, in this study, we considered a virtual lattice space in which gas molecules are arranged and developed a model that enables intuitive understanding and quantitative calculations using defining equations. Specifically, the model was implemented in spreadsheet software with 100 gas molecules in a virtual space of 100 lattices. The model showed that even such a simple model can define thermodynamic quantities and quantify the number of cases Win Boltzmann’s equation from the viewpoint of the arrangement of molecules in lattice space. This is a tool that can calculate and quantitatively examine all entropy from multiple entropy-defining equations. This calculation sheet shows that the calculated values of entropy by the Sackur–Tetrode equation and Boltzmann’s equation are almost the same. Furthermore, the entropy difference calculated using the thermodynamic defining equation dS = dQ/T was also consistent with the values by other equations. Therefore, the model can specifically calculate the values of various entropy-defining equations.

Journal of National Fisheries University Volume 69 Issue 2
pp. 33 - 40

published_at 2021-02

Journal of National Fisheries University Volume 67 Issue 2
pp. 79 - 90

published_at 2019-01

Creators :
Ishida Takeshi
Ishida Masateru
Tsuda Minoru
Ikoma Nobuyasu
Publishers : National Fisheries University

Journal of National Fisheries University Volume 66 Issue 2
pp. 89 - 102

published_at 2018-01

Creators :
Ishida Takeshi
Mohri Masahiko
Sugiura Yoshimasa
Yasumoto Shinya
Fujii Yousuke
Publishers : National Fisheries University

Journal of National Fisheries University Volume 64 Issue 2
pp. 86 - 102

published_at 2016-02