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Real size calculation of high pressure hydrogen flow and its auto-ignition in cylindrical tube

Abstract

A real-size calculation is performed for high-pressure hydrogen release in a tube using the axisymmetric Navier–Stokes equations with the full hydrogen chemistry. A Harten–Yee-type total variation diminishing scheme and point-implicit method are used to integrate the governing equations. The calculated real-size results show that the leading shock wave velocity is similar to that calculated using a smaller tube. The mixing process and ignition behaviour of high-pressure hydrogen are explained in detail; the velocity shear layer and Kelvin–Helmholtz instability are the main causes of mixing of hydrogen with air and ignition in the high-temperature region behind the leading shock wave.

Related subjects: Safety
Countries: Japan
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2013-09-13
2021-10-18
http://instance.metastore.ingenta.com/content/conference609
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Real size calculation of high pressure hydrogen flow and its auto-ignition in cylindrical tube

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