Grundel, SaraSaraGrundelJansen, LennartLennartJansenHornung, NilsNilsHornungClees, TanjaTanjaCleesTischendorf, CarenCarenTischendorfBenner, PeterPeterBenner2022-03-122022-03-122014https://publica.fraunhofer.de/handle/publica/38695210.1007/978-3-662-44926-4_9We explore the Tractability Index of Differential Algebraic Equations (DAEs) that emerge in the simulation of gas transport networks. Depending on the complexity of the network, systems of index 1 or index 2 can arise. It is then shown that these systems can be rewritten as Ordinary Differential Equations (ODEs). We furthermore apply Model Order Reduction (MOR) techniques such as Proper Orthogonal Decomposition (POD) to a network of moderate size and complexity and show that one can reduce the system size significantly.enproper orthogonal decompositionnonlinear systemsgas network simulationmodel order reductiondifferential algebraic equations003005006518conference paper