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Title: Investigation Of Flowelds In Small Sonic Venturi-Nozzl
Author: E. Von Lavante , m. Ishibashi, G. Wendt
Source: Flomeko 2000
Year Published: 2000
Abstract: Detailed investigation of ow elds associated with several sonic Venturi nozzles with small Reynolds numbers used for ow metering was carried out. The range of Reynolds numbers considered in this work extended from 4 103 to 4:4 104. In the experimental part, global parameters such as discharge coecient Cd and local ow vari- ables such as recovery temperature Tr were investigated independently at two dierent scientic institutions. Both discovered ow phenomena that were not explainable using simple linear theories. Therefore, in the numerical part of the present investigation, the corresponding ow elds were simulated using compressible viscous ow solver ACHIEVE. The qualitative agreement of the numerical and experimental results was satisfactory the comparison enabled the authors to explain most of the physical phenomena observed.

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