Pressure drop measurements at various gas and liquid flow rates on air/pseudoplastic liquid systems in 21.7 and 36.5 mm ID pipes with and without stainless steel swirl generators, using previously described equipment (Indian J. Technol. 6:354, 1968) showed that the two-phase pressure drops were less than the single-phase pressure drops in the slug flow regime. This probably resulted because, in non-Newtonian flow, the slug exhibited streamline behavior and the energy loss due to the gas slug was practically negligible; in Newtonian flow, the circulating motion of the slug increased the pressure drop. Lockhart and Martinelli's model accurately represented the two-phase pressure drop (with and without swirl generators) if a suitable modification was made to the single-phase flow parameter, X. An increase in pipe diameter had no significant effect on the pressure drop; for the same superficial Reynolds number there was a decrease in the pressure drop both with and without swirl generators.

  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Srivastava, RPS
    • Narasimhamurty, GSR
  • Publication Date: 1973-2

Media Info

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Filing Info

  • Accession Number: 00056383
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM