Keynote
Reduced methods in hydrogen tracking over gas networks
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Gas flow in a pipe is modelled with hyperbolic conservation laws yielding nonlinear hyperbolic partial differential equations. A gas network is a multi-domain system requiring graph-based framework for coupling at boundaries and ensuring conservation laws hold at junctions. Additional complexities are expected with the pipelines in near future likely consisting gas mixtures with hydrogen. Tracking of component concentrations across the network needs composite flow models requiring multi-physics coupling. To address large-scale network sizes, a variety of nonlinear model reduction approaches are necessary.