REDUCED SKIN FRICTION IN OIL PIPE DUE TO WATER ADDITION
the possibility of reducing the skin iriction in pipes transmitting viscous liquid by adding a second less viscous liquid is developed theoretically by first devising a procedure for determining the geometry of the interface, taking into account interface tension, capillary forces, and gravity. Then the two-component Poiseuille flow problem is solved by obtaining an equivalent variational principle and applying the Rayleigh-Ritz method. The results show that when the viscosity ratio is about 1:10, it is possible to get close to 50% reduction in the applied pressure gradient and similar reduction in the power consumption.
- Presented at the Israeli Institute of Chemical Engineers-American Institute of Chemical Engineers-American Society of Mechanical Engineers Two-Phase System International Symposium, technion City, Haifa, Israel, Aug 29-Sept 2, 1971.
Israeli Institute of Chemical Engineers,
- Bentwich, M
- Publication Date: 1971
- Pagination: 22 p.
- Issue Number: 7-4
- TRT Terms: Additives; Drag; Pipe flow; Polymers
- Old TRIS Terms: Drag reduction; Pipeline flow theory; Polymer additives
- Subject Areas: Design; Marine Transportation;
- Accession Number: 00056244
- Record Type: Publication
- Source Agency: American Petroleum Institute
- Report/Paper Numbers: Preprint
- Files: TRIS
- Created Date: Jul 15 1974 12:00AM