Gas-transfer analysis. Section E: Unchoked discharge solutions
Abstract
The exact subsonic discharging solutions (infinite receiver volume) are derived in terms of the minimum flow area, Mach number, for both adiabatic and isothermal reservoirs. The solutions are valid for an ideal gas and unity loss coefficient. The solutions are different mathematically for diatomic and monatomic gases as well as for the initially choked and initially unchoked gases. Extensive results are presented for constant C(d)A(e) where it is shown that all possible discharge solutions can be presented in nondimensional form with only a few graphs. Also it is shown that simple expressions for the time of pressure equilibrium exist in terms of a reference time scale, the ratio of specific heats, and the initial receiver to supply pressure ratio.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1974
- Bibcode:
- 1974STIN...7521572C
- Keywords:
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- Gas Flow;
- Transport Properties;
- Chokes (Restrictions);
- Gas Discharges;
- Specific Heat;
- Fluid Mechanics and Heat Transfer