NUMERICAL INVESTIGATION OF TRANSITIONAL BEHAVIOR IN CRITICAL FLOW VENTURI NOZZLES

E. von Lavante, Harun Kaya

Abstract

The flow fields in two toroidal Venturi nozzles operating at critical conditions have been investigated using numerical flow simulation. The present study focused on the transitional effects in the boundary layer, occuring in critical flow Venturi nozzles (CFVN) with shapes that might not confirm to the ISO 9300 standard. Two intake geometries were studied, with a well-tested transition criterium being applied. The nozzles displayed in most cases delayed transition at Reynolds numbers higher than indicated in the ISO 9300 standard.

Keywords

critical nozzles, flow metering, laminar-turbulent transition

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IMEKO-WC-2015-TC9-228.pdf

DOI

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IMEKO TC

TC9 - Flow Measurement

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