Validation of a reduced-order jet model for subsonic and underexpanded hydrogen jets [electronic resource]
Much effort has been made to model hydrogen releases from leaks during potential failures of hydrogen storage systems. A reduced-order jet model can be used to quickly characterize these flows, with low computational cost. Notional nozzle models are often used to avoid modeling the complex shock str...
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Full Text (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2015.
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| Summary: | Much effort has been made to model hydrogen releases from leaks during potential failures of hydrogen storage systems. A reduced-order jet model can be used to quickly characterize these flows, with low computational cost. Notional nozzle models are often used to avoid modeling the complex shock structures produced by the underexpanded jets by determining an "effective" source to produce the observed downstream trends. In our work, the mean hydrogen concentration fields were measured in a series of subsonic and underexpanded jets using a planar laser Rayleigh scattering system. Furthermore, we compared the experimental data to a reduced order jet model for subsonic flows and a notional nozzle model coupled to the jet model for underexpanded jets. The values of some key model parameters were determined by comparisons with the experimental data. Finally, the coupled model was also validated against hydrogen concentrations measurements for 100 and 200 bar hydrogen jets with the predictions agreeing well with data in the literature. Hydrogen Jets; Reduced-Order Jet Model; Notional Nozzle; Underexpanded Jets. |
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| Item Description: | Published through SciTech Connect. 11/14/2015. "sand2016--12343j" "649715" International Journal of Hydrogen Energy 41 2 ISSN 0360-3199 AM. Xuefang Li; Ethan S. Hecht; David M. Christopher. |
| Physical Description: | p. 1348-1358 : digital, PDF file. |