What is it about?
Hydrogen blending will play a role in the transformation to renewable energies. Existing pipelines can be used to start the transport of hydrogen, by mixing it with natural gas. In the paper, it is discussed how the velocities of the different components synchronize in the gas flow. As a model for mixture flow, one-velocity (also called drift-flux) models have less variables than models where for each component a component-velocity is considered. In this paper a justification for the one-velocity model for pipeline flow is given. Since the velocities synchronize exponentially fast up to a certain model-error, it makes sense to consider the one-velocity model.
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Why is it important?
To mitigate climate change, it would be good the enforce hydrogen based processes in industry. The production of the hydrogen will often not be in the same location as the point where it is needed, so transportation of the hydrogen is of interest. The cheapest way is in existing pipelines that have been constructed for the transportation of natural gas.
Perspectives
Gas pipelines form complex networks. To understand and control the transportation of gas mixtures in networks, it is important to have suitable models for this process.
Martin Gugat
Friedrich-Alexander-Universitat Erlangen-Nurnberg
Read the Original
This page is a summary of: Synchronization of velocities in pipeline flow of blended gas, Journal of Mathematical Analysis and Applications, April 2026, Elsevier,
DOI: 10.1016/j.jmaa.2025.130078.
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