Speaker
Description
Accurate simulations of gas flow through pipeline networks can offer invaluable insights for network transmission and design operators. This becomes increasingly important with the integration of hydrogen-blended fuels in the development of hydrogen-based energy systems. Existing models primarily address single-component, one-dimensional flow within individual pipe elements, interconnected at network junctions. Recently, composite flow models within pipes, often utilizing mixture fraction methods, have gained significant attention. These methods employ a segregated approach to flow and composite transport, albeit within the constraints of one-dimensional modeling. Physically, due to hydrogen's low molecular weight, the dynamics of constituent flow and advection in blended gas mixtures can be challenging to predict. Exploring higher-dimensional models can provide deeper insights into the underlying physics. This study focuses on 2D and 3D pipe flow simulations for composite gases performed using finite-element space discretizations and IMEX time-stepping. A comparison is subsequently performed against existing 1D models.
