HYDRODYNAMICS OF NON-NEWTONIAN TWO-PHASE FLOW IN PIPES

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

• Pagination: p. 553-558
• Serial:
  • Chemical Engineering Science
  • Volume: 28
  • Issue Number: 2
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Nonnewtonian flow; Pipe flow; Two phase flow
• Old TRIS Terms: Pipeline flow theory
• Subject Areas: Design; Marine Transportation;

Filing Info

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