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This report is concerned with the flow of high viscosity fluids through pipeline restrictions (such as contractions, enlargement, valves, etc), the work being stimulated by the need to improve design methods for emergency pressure relief systems associated with polymerization reactors. Available design methods are critically assessed against an experimental database that was assembled from a number of sources throughout the literature. It is found, on the whole, that these design methods do not give good representations of the experimental data; this is probably due to insufficient attention having been given to the physics of the flow processes that occur during laminar flow through contraction-expansion devices.

Additional information

Authors: MCNEIL D A, Heriot-Watt University, Department of Mechanical and ChemicalEngineering, Edinburgh (GB);MORRIS S D, JRC Ispra (IT)
Bibliographic Reference: EUR 16107 EN (1994) 40pp., FS, free of charge
Availability: Available from the Public Relations and Publications Unit, JRC Ispra, I-21020 Ispra (IT)
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