✦ LIBER ✦

Some numerical considerations in the simulation of low-Ma number hydrogen/air mixing layers

✍ Scribed by Rebecca Owston; Vinicio Magi; John Abraham

Book ID: 103832762
Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 901 KB
Volume: 35
Category: Article
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2010.08.139

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✦ Synopsis

In this work numerical simulations of hydrogen/air mixing are conducted which demonstrate the generation of spatial pressure gradients arising from the diffusion of species (hydrogen versus air) of high molecular weight disparity. Convective velocities arising as a result of the spatial gradients have been evaluated with respect to molecular weight ratio between stratified layers in coflow and stationary diffusion layers. The implications of results for the spatially-constant thermodynamic pressure assumption for low-Machnumber flows are discussed. Additionally, the impact of the choice of diffusion model on the results has been assessed.

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