Comptes Rendus
Transient gas flow simulation using an Adaptive Method of Lines
Comptes Rendus. Mécanique, Volume 331 (2003) no. 7, pp. 481-487.

Designing natural gas pipelines to safely and efficiently handle unsteady flows, requires knowledge of pressure drop, flowrate and temperature distribution throughout the system. The accurate prediction of these parameters is essential in order to achieve optimum cumulative deliverability, and safe and reliable operation. An Adaptive Method of Lines algorithm is formulated for the solution of Euler system of equations, which fully simulates slow and fast transients. Two test cases present the improvement of the numerical solution from grid adaptation. Good results are obtained both for slow and fast transients simulations proving that the suggested numerical procedure is appropriate for such predictions.

La conception des gazoducs pour gaz naturels permettant de maîtriser de manière sûre et efficace les écoulements non-uniformes nécessite une bonne connaissance de la chute de pression, du débit et de la distribution des températures à travers le système. Une prédiction correcte de ces paramètres est essentielle pour obtenir une livraison optimale ainsi que sécurité et fiabilité maximales. L'algorithme contenu dans la Méthode Adaptative de Lignes est formulée ici pour la solution du système d'équations d'Euler, qui décrit très bien les flux gazeux lents ou rapides. On présente deux cas particuliers illustrant l'amélioration considérable des solutions numériques grâce au choix de réseau adapté au problème. De bons résultats obtenus pour des simulations d'écoulements lents et rapides montrent que la procédure numérique suggérée est bien appropriée pour les prédictions de ce type.

Received:
Accepted:
Published online:
DOI: 10.1016/S1631-0721(03)00106-2
Keywords: Computational fluid mechanics, Natural gas, Transient flow, Method of lines, Adaptive grid
Mot clés : Mécanique des fluides numérique, Écoulements gazeux, Simulation numérique, Solutions numériques d'équations d'Euler, Modélisation des gazoducs

Evangelos Tentis 1; Dionissios Margaris 1; Dimitrios Papanikas 1

1 Fluid Mechanics Laboratory, University of Patras, 26500 Patras, Greece
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Evangelos Tentis; Dionissios Margaris; Dimitrios Papanikas. Transient gas flow simulation using an Adaptive Method of Lines. Comptes Rendus. Mécanique, Volume 331 (2003) no. 7, pp. 481-487. doi : 10.1016/S1631-0721(03)00106-2. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/S1631-0721(03)00106-2/

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