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IDEAL GAS RELATIONS FOR THE DESCRIPTION OF THE REAL GAS ISENTROPIC CHANGES.

Author(s) : KOUREMENOS D. A., KAKATSIOS X. K.

Type of article: Article

Summary

USING THE AVAILABLE RELATIONS DESCRIBING THE THERMAL AND CALORIC BEHAVIOUR OF H2 O, AIR, NH3 AND OF R12 AND R22, NUMEROUS ISENTROPIC EXPANSIONS STARTING AT DIFFERENT INITIAL POINTS, HAVE BEEN COMPUTED. THE RESULTS OBTAINED WERE APPROXIMATED BY EXPLICIT RELATIONS SIMILAR TO THOSE OF THE IDEAL GAS BUT WITH DIFFERENT CONSTANTS WITH AN ACCURACY BEING FOR THE MOST CASES BETTER THAN 0.5%. THE SPECIFIC VOLUME, REDUCED BY THE CORRESPONDING VALUE OF THE STAGNATION POINT, UP TO A MACH NUMBER OF LESS THAN 0.7, FOLLOWS A PARABOLIC LAW COMMON TO ALL GASES CONSIDERED. THE REDUCED PRESSURE IN THE TRANSONIC REGION HAS A NEARLY LINEAR DECREASE, HAVING A SLOPE, COMMON TO ALL MEDIA, OF -0.605.

Details

  • Original title: IDEAL GAS RELATIONS FOR THE DESCRIPTION OF THE REAL GAS ISENTROPIC CHANGES.
  • Record ID : 1986-0930
  • Languages: English
  • Source: Forsch. Ing.wes. - vol. 51 - n. 6
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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