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Adelaide Research and Scholarship
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Schools and Disciplines
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School of Civil, Environmental and Mining Engineering
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Civil and Environmental Engineering Publications
Permanent link to this item:
http://hdl.handle.net/2440/22958
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| Type: | Article |
| Title: | Systematic evaluation of one-dimensional unsteady friction models in simple pipelines |
| Author: | Vitkovsky, John Philipp
Bergant, A.
Simpson, Angus Ross
Lambert, Martin F. |
| Citation: | Journal of Hydraulic Engineering, 2006; 132 (7):696-708 |
| Publisher: | American Society of Civil Engineers |
| Issue Date: | 2006 |
| ISSN: | 0733-9429 |
| School/Discipline: | School of Civil and Environmental Engineering |
Statement of
Responsibility: | John P. Vítkovský, Anton Bergant, Angus R. Simpson and Martin F. Lambert |
| Abstract: | In this paper, basic unsteady flow types and transient event types are categorized, and then unsteady friction models are tested
for each type of transient event. One important feature of any unsteady friction model is its ability to correctly model frictional dissipation
in unsteady flow conditions under a wide a range of possible transient event types. This is of importance to the simulation of transients
in pipe networks or pipelines with various devices in which a complex series of unsteady flow types are common. Two common
one-dimensional unsteady friction models are considered, namely, the constant coefficient instantaneous acceleration-based model and the
convolution-based model. The modified instantaneous acceleration-based model, although an improvement, is shown to fail for certain
transient event types. Additionally, numerical errors arising from the approximate implementation of the instantaneous acceleration-based
model are determined, suggesting some previous good fits with experimental data are due to numerical error rather than the unsteady
friction model. The convolution-based model is successful for all transient event types. Both approaches are tested against experimental
data from a laboratory pipeline. |
| Description: | © 2006 ASCE |
| RMID: | 0020060807 |
| DOI: | 10.1061/(ASCE)0733-9429(2006)132:7(696) |
| Published version: | http://ascelibrary.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JHEND8000132000007000696000001&idtype=cvips&gifs=Yes |
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| Appears in Collections: | Civil and Environmental Engineering Publications
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| View citing articles in: | Google Scholar
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