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Influence of orifice geometry on the simplification of transmission probability calculations

✍ Scribed by B.P. Butler; V. Music; F.J. Redgrave

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
106 KB
Volume
53
Category
Article
ISSN
0042-207X

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✦ Synopsis

By careful design of the orifice employed in a dynamic-flow vacuum standard it is possible to ensure its mechanical stability while retaining a transmission probability very near unity. If spherical geometry is chosen the integral equation method calculations can be reduced to simple analytical expressions, and the introduction of approximations connected with evaluating integrals avoided completely. The analytical method provides direct traceability to dimensional data and achieves extremely low uncertainties. Details of the calculation for the orifice within an NPL system are presented.

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Effect of geometry on the transmission o
Effect of geometry on the transmission of detonation through an orifice
✍ Y.K. Liu; J.H. Lee; R. Knystautas πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 English βš– 686 KB

An experimental study has been carried out to investigate the transmission of a planar detonation wave through an orifice into an unconfined medium. Mixtures of 2H 2 + 02 + /3N 2 and C2H 4 + 3(02 + /~N2) for a range of nitrogen concentrations corresponding to 1 --</~ --< 3.76 and at an initial presu