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This report is concerned with the flow of highly viscous fluids through pipeline restrictions such as contractions, expansions and valves: termed contraction-expansion devices. This work has been stimulated by the need for improved design methods for emergency pressure relief systems associated with polymerization reactors. A mechanistic approach is taken to understanding the energy loss mechanisms in both contractions and expansions. These mechanisms are used to generate new design equations for contraction-expansion devices. These represent a significant improvement over existing design methods although there is some uncertainty in the range of pipe diameters to which they can be applied.

Additional information

Authors: MCNEIL D A, Heriot Watt University, Department of Mechanical and Chemical Engineering, Edinburgh (GB);MORRIS S D, JRC Ispra (IT)
Bibliographic Reference: EUR 16348 EN (1995) 50pp., FS, free of charge
Availability: Available from the Public Relations and Publications Unit, JRC Ispra, I-21020 Ispra (IT)
Record Number: 199610430 / Last updated on: 1996-05-20
Original language: en
Available languages: en
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