{"title":"流体热力学性质的状态方程。","authors":"Robert D Goodwin","doi":"10.6028/jres.079A.003","DOIUrl":null,"url":null,"abstract":"<p><p>This equation of state was developed from <i>PVT</i> compressibility data on methane and ethane. The highly-constrained form originates on a given liquid-vapor coexistence boundary (described by equations for the vapor pressures and the orthobaric densities). It then requires only five least-squares coefficients, and ensures a qualitatively correct behavior of the <i>P</i>(<i>ρ</i>, <i>T</i>) surface and of its derivatives, especially about the critical point. This nonanalytic equation yields a maximum in the specific heats <i>C</i> <sub><i>υ</i></sub> (<i>ρ</i>, <i>T</i>) a t the critical point.</p>","PeriodicalId":17018,"journal":{"name":"Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry","volume":"79A 1","pages":"71-79"},"PeriodicalIF":0.0000,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6565424/pdf/jres-79A-71.pdf","citationCount":"7","resultStr":"{\"title\":\"Equation of State for Thermodynamic Properties of Fluids.\",\"authors\":\"Robert D Goodwin\",\"doi\":\"10.6028/jres.079A.003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>This equation of state was developed from <i>PVT</i> compressibility data on methane and ethane. The highly-constrained form originates on a given liquid-vapor coexistence boundary (described by equations for the vapor pressures and the orthobaric densities). It then requires only five least-squares coefficients, and ensures a qualitatively correct behavior of the <i>P</i>(<i>ρ</i>, <i>T</i>) surface and of its derivatives, especially about the critical point. This nonanalytic equation yields a maximum in the specific heats <i>C</i> <sub><i>υ</i></sub> (<i>ρ</i>, <i>T</i>) a t the critical point.</p>\",\"PeriodicalId\":17018,\"journal\":{\"name\":\"Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry\",\"volume\":\"79A 1\",\"pages\":\"71-79\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1975-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6565424/pdf/jres-79A-71.pdf\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.6028/jres.079A.003\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6028/jres.079A.003","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Equation of State for Thermodynamic Properties of Fluids.
This equation of state was developed from PVT compressibility data on methane and ethane. The highly-constrained form originates on a given liquid-vapor coexistence boundary (described by equations for the vapor pressures and the orthobaric densities). It then requires only five least-squares coefficients, and ensures a qualitatively correct behavior of the P(ρ, T) surface and of its derivatives, especially about the critical point. This nonanalytic equation yields a maximum in the specific heats Cυ (ρ, T) a t the critical point.
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