Planar momentum-dominated regime of small-scale hydrogen leakage |
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Authors: | MF El-Amin YA Jaha MA El-Ameen |
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Affiliation: | 1. Department of Mathematics, Faculty of Science, Aswan University, Aswan 81528, Egypt;2. Mathematics Department, College of Applied Sciences, Umm Al-Qura University, Saudi Arabia;3. Faculty of Engineering, Umm Al-Qura University, Saudi Arabia |
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Abstract: | The geometry of the source of hydrogen leakage is essential in forming hydrogen flow and distribution in air. For example, if the geometry of the source is circular, the behavior of leakage flow becomes axisymmetric and a radial jet is constructed. On the other hand, if the geometry of the source is planar, the behavior of hydrogen leakage becomes planar and a planar jet is constructed. Throughout this article, the problem of momentum-dominated regime of a planar slow-leak hydrogen–air jet resulting from a hydrogen leakage from a planar source is considered. We derive a set of analytical expressions for selected physical turbulent properties. Several quantities of interest are obtained, including the cross-stream velocity, the Reynolds stresses, the velocity-concentration correlation, the dominant turbulent kinetic energy production term, the turbulent eddy viscosity, the turbulent eddy diffusivity, and the turbulent Schmidt number. Moreover, the normalized jet-feed material density and the normalized momentum flux density are correlated. |
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Keywords: | Hydrogen leakage Hydrogen safety Momentum-dominated regime Turbulent jet Turbulent flow |
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