Interfacial velocity in the core-annular flow in a tube

Sayavur I. Bakhtiyarov, Dennis A. Siginer

Research output: Contribution to journalArticlepeer-review


The lubrication of a non-Newtonian liquid by a Newtonian fluid in the concentrically stratified laminar flow of two immiscible fluids in a horizontal tube has been investigated experimentally by an opto-mechanical method. Data for the interfacial velocity and the total volume flow rate for two zero shear rate viscosity ratio are presented. The results of this investigation are useful in solving high wax content crude oil transportation problems and in the design of lubricated pipelines.

Original languageEnglish
Pages (from-to)33-35
Number of pages3
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • General Engineering


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