Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1279937 | International Journal of Hydrogen Energy | 2010 | 9 Pages |
Abstract
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-Mach-number flows are discussed. Additionally, the impact of the choice of diffusion model on the results has been assessed.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Rebecca Owston, Vinicio Magi, John Abraham,