Entropy variation in isothermal fluid flow considering real gas effects

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorda Silva, Maurício Guimarães
dc.creatorde Oliveira, Paulo Afonso Pinto
dc.date2014-05-27T11:25:27Z
dc.date2016-10-25T18:33:30Z
dc.date2014-05-27T11:25:27Z
dc.date2016-10-25T18:33:30Z
dc.date2011-01-01
dc.date.accessioned2017-04-06T01:49:07Z
dc.date.available2017-04-06T01:49:07Z
dc.identifierJournal of Aerospace Technology and Management, v. 3, n. 1, p. 29-40, 2011.
dc.identifier1984-9648
dc.identifier2175-9146
dc.identifierhttp://hdl.handle.net/11449/72270
dc.identifierhttp://acervodigital.unesp.br/handle/11449/72270
dc.identifier10.5028/jatm.2011.03019210
dc.identifier2-s2.0-79955933512.pdf
dc.identifier2-s2.0-79955933512
dc.identifierhttp://dx.doi.org/10.5028/jatm.2011.03019210
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/893154
dc.descriptionThe present paper concerns on the estimative of the pressure loss and entropy variation in an isothermal fluid flow, considering real gas effects. The 1D formulation is based on the isothermal compressibility module and on the thermal expansion coefficient in order to be applicable for both gas and liquid as pure substances. It is emphasized on the simple methodology description, which establishes a relationship between the formulation adopted for ideal gas and another considering real gas effects. A computational procedure has been developed, which can be used to determine the flow properties in duct with a variable area, where real gas behavior is significant. In order to obtain quantitative results, three virial coefficients for Helium equation of state are employed to determine the percentage difference in pressure and entropy obtained from different formulations. Results are presented graphically in the form of real gas correction factors, which can be applied to perfect gas calculations.
dc.languageeng
dc.relationJournal of Aerospace Technology and Management
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectEntropy
dc.subjectIsothermal flow
dc.subjectPetroleum engineering
dc.subjectReal gas
dc.subjectComputational procedures
dc.subjectCorrection factors
dc.subjectEntropy variation
dc.subjectEquation of state
dc.subjectFlow properties
dc.subjectIdeal gas
dc.subjectIsothermal compressibility
dc.subjectIsothermal fluid flow
dc.subjectPerfect gas
dc.subjectPressure loss
dc.subjectPure substances
dc.subjectQuantitative result
dc.subjectReal gas effects
dc.subjectThermal expansion coefficients
dc.subjectVariable area
dc.subjectVirial coefficient
dc.subjectEquations of state
dc.subjectFlow of fluids
dc.subjectHelium
dc.subjectProfessional aspects
dc.subjectReal variables
dc.subjectThermal expansion
dc.subjectTransport properties
dc.subjectGases
dc.titleEntropy variation in isothermal fluid flow considering real gas effects
dc.typeOtro


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