[article] 
inJournal of engineering mechanics > Vol. 135 N° 6 (Juin 2009) . - pp. 538-547

Titre :	Transient modeling of arbitrary pipe networks by a laplace-domain admittance matrix
Type de document :	texte imprimé
Auteurs :	Aaron C. Zecchin, Auteur ; Simpson, Angus R., Auteur ; Martin F. Lambert, Auteur
Article en page(s) :	pp. 538-547
Note générale :	Mécanique appliquée
Langues :	Anglais (eng)
Mots-clés :	Pipe networks Hydraulic transients Frequency response.
Résumé :	An alternative to the modeling of the transient behavior of pipeline systems in the time-domain is to model these systems in the frequency-domain using Laplace transform techniques. Despite the ability of current methods to deal with many different hydraulic element types, a limitation with almost all frequency-domain methods for pipeline networks is that they are only able to deal with systems of a certain class of configuration, namely, networks not containing second-order loops. This paper addresses this limitation by utilizing graph theoretic concepts to derive a Laplace-domain network admittance matrix relating the nodal variables of pressure and demand for a network comprised of pipes, junctions, and reservoirs. The adopted framework allows complete flexibility with regard to the topological structure of a network and, as such, it provides an extremely useful general basis for modeling the frequency-domain behavior of pipe networks. Numerical examples are given for a 7- and 51-pipe network, demonstrating the utility of the method.
DEWEY :	620.1
ISSN :	0733-9399
En ligne :	http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000 [...]

[article] Transient modeling of arbitrary pipe networks by a laplace-domain admittance matrix [texte imprimé] / Aaron C. Zecchin, Auteur ; Simpson, Angus R., Auteur ; Martin F. Lambert, Auteur . - pp. 538-547.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 135 N° 6 (Juin 2009) . - pp. 538-547

Mots-clés :	Pipe networks Hydraulic transients Frequency response.
Résumé :	An alternative to the modeling of the transient behavior of pipeline systems in the time-domain is to model these systems in the frequency-domain using Laplace transform techniques. Despite the ability of current methods to deal with many different hydraulic element types, a limitation with almost all frequency-domain methods for pipeline networks is that they are only able to deal with systems of a certain class of configuration, namely, networks not containing second-order loops. This paper addresses this limitation by utilizing graph theoretic concepts to derive a Laplace-domain network admittance matrix relating the nodal variables of pressure and demand for a network comprised of pipes, junctions, and reservoirs. The adopted framework allows complete flexibility with regard to the topological structure of a network and, as such, it provides an extremely useful general basis for modeling the frequency-domain behavior of pipe networks. Numerical examples are given for a 7- and 51-pipe network, demonstrating the utility of the method.
DEWEY :	620.1
ISSN :	0733-9399
En ligne :	http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000 [...]