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A simple analytical formula is derived for the inlet Mach number of a pipeline restriction through which there is choked flow of gas. This formula, valid for all diameter ratios Beta < 1.0, permits the explicit calculation of choked flow parameters to an accuracy < 0.1 %. Compared to existing iterative procedures, this formula provides an easy method for providing the inlet Mach number. The formula can be applied directly in the design of pressure relief systems.

Additional information

Authors: MORRIS S D, JRC Ispra (IT)
Bibliographic Reference: Article: International Journal of Hazardous Materials (1995)
Record Number: 199511322 / Last updated on: 1995-10-31
Original language: en
Available languages: en