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<meta content="Barton, Andrew F." name="eprints.creators_name" />
<meta content="Wallis, Michael R." name="eprints.creators_name" />
<meta content="Sargison, Jane E." name="eprints.creators_name" />
<meta content="Buia, Alexandru" name="eprints.creators_name" />
<meta content="Walker, Greg J." name="eprints.creators_name" />
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<meta content="2007-10-22 12:52:35" name="eprints.datestamp" />
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<meta content="Hydraulic roughness of biofouled pipes, biofilm character, and measured improvements from cleaning" name="eprints.title" />
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<meta content="The hydraulic performance of pipelines can be significantly affected by the presence of biological growth on internal surfaces. The change in wall roughness brought about by the biofilms has been studied by the use of headloss tests, pre- and post-cleaning, of the pipelines in three Tasmanian hydroelectric schemes.
Results of the headloss testing show that improvements to hydraulic efficiency can be achieved from the cleaning of biofouling material. The data when plotted as a Moody diagram shows that the friction law for conduits roughened by biological growths may not always follow a Colebrook-White type relationship, although the results are too narrow in Reynolds number to be conclusive.
It was found that bacteria made up the majority of the biofilm biomass in the pipelines studied. Based on molecular analysis, members of the class Alphaproteobacteria were the most frequently detected followed by members of the phylum Chloroflexi." name="eprints.abstract" />
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<meta content="Ackers, P. (1961). "The Hydraulic Resistance of Drainage Conduits." Proceedings of the Institute of Civil Engineers 19(July): 307-336.
Ackers, P., Crickmore, M. J. and Holmes, D. W. (1964). "Effects of Use on the Hydraulic Resistance of Drainage Conduits." Proceedings of the Institute of Civil Engineers 28(July): 339-360.
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Barton, A. F. (2006). Friction, Roughness and Boundary Layer Characteristics of Freshwater Biofilms in Hydraulic Conduits. Doctor of Philosophy. University of Tasmania, School of Engineering. Hobart, Tasmania, Australia.
10
Barton, A. F., Sargison, J. E. and Walker, G. J. (2007). Effects of freshwater biofilms on flow over rough surfaces. IAHR 6th International Symposium on Ecohydraulics. 18-23 February, Christchurch Convention Centre. Christchurch, New Zealand. CD-ROM.
Barton, A. F., Sylvester, M. W., Sargison, J. E., Walker, G. J. and Denne, A. B. (2004). Deterioration of Conduit Efficiency Due to Biofouling. 8th National Conference on Hydraulics in Water Engineering, 13-16 July, ANA Hotel Gold Coast, Queensland, Australia, Engineers Australia. CD-ROM.
Bland, C. E. G., Bayley, R. W. and Thomas, E. V. (1975). "Some Observations on the Accumulation of Slime in Drainage Pipes and the Effects of These Accumulations on the Resistance to Flow." Public Health Engineering: 21-28.
Brett, T. M. (1980). "Head-Loss Measurements on Hydroelectric Conduits." ASCE Journal of the Hydraulics Division HY1: 173- 190.
Brown, J. C. (1903-1904). "Deposits in Pipes and Other Channels Conveying Potable Water." The Institution of Civil Engineers - Minutes of Proceedings CLVI(Part II): 1-17.
Colebrook, C. F. (1939). "Turbulent Flow in Pipes, with Particular Reference to the Transition between the Smooth and Rough Pipe Laws." Journal of Civil Engineers 11: 133-157.
Druck Limited (2002). PTX/PMP 1400 Industrial Pressure Sensors.
Holt, J. G., Krieg, N. R., Sneath, P. H. A., Staley, J. T. and Williams, S. T. (1994). Bergey's Manual of Determinative Bacteriology. Baltimore, Williams and Wilkins.
Larsen, E. I., Sly, L. I. and McEwan, A. G. (1999). "Manganese(II) Adsorption and Oxidation by Whole Cells and a Membrane Fraction of Pedomicrobium Sp. ACM 3067." Archives of Microbiology 171: 257-264.
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LeChevallier, M. W., Babcock, T. M. and Lee, R. G. (1987). "Examination and Characterization of Distribution System Biofilms." Applied and Environmental Microbiology 53(2714-2724).
McFie, H. (1973). Biological, Chemical and Related Engineering Problems in Large Storage Lakes of Tasmania. Man-Made Lakes: Their Problems and Environmental Effects. W. C. Ackermann, White, G.F. and Worthington, E.B. Washingston, D.C., American Geophysical Union. 17: 56-62.
McFie, H. (1976). Power Storage Lakes: Biological Depositions and Energy Losses in Tasmania. 47th ANZAAS Congress, Hobart, Tasmania, Australia.
Milltronics (2001). The Probe Level Monitor: Instruction Manual Pl-517, Siemens Milltronics Process Instruments Inc.
Minkus, A. J. (1954). "Deterioration of the Hydraulic Capacity of Pipelines." New England Water Works Association LXVIII(1): 1-10.
Nikuradse, J. (1933). Laws of Flow in Rough Pipes. Washington, National Advisory Committee for Aeronautics. Technical Memorandum 1292.
Panametrics (2001). Transport PT868 Flowmeter: Options and Specifications.
Picologlou, B. F., Zelver, N. and Charaklis, W. G. (1980). "Biofilm Growth and Hydraulic Performance." ASCE Journal of the Hydraulics Division HY5: 733-747.
Pollard, A. L. and House, H. E. (1959). "An Unusual Deposit in a Hydraulic Tunnel." ASCE Journal of the Power Division, December: 163-171.
12
Rickard, A. H., Leach, A. S., Hall, L. S., Buswell, C. M., High, N. J. and Handley, P. S. (2002). "Phylogenetic Relationships and Coaggregation Ability of Freshwater Biofilm Bacteria." Applied and Environmental Microbiology 68: 3644-3650.
Schultz, M. P. (2000). "Turbulent boundary layers on surfaces covered with filamentous algae." ASME Journal of Fluids Engineering 122: 357-363.
Schultz, M. P., Swain, G.W. (1999). "The effect of biofilms on turbulent boundary layers." ASME Journal of Fluids Engineering 121: 44-51.
Shockling, M. A., Allen, J. J. and Smits, A. J. (2006). "Roughness Effects in Turbulent Pipe Flow." Journal of Fluid Mechanics 564: 267-285.
Stoodley, P., Lewandowski, Z., Boyle, J. D. and Lapin-Scott, H. M. (1988). "Oscillation Characteristics of Biofilm Streamers in Turbulent Flowing Water as Related to Drag and Pressure Drop." Biotechnology and Bioengineering 57(5): 536-544.
Zhang, H., Sekiguchi, Y., Hugenholtz, S., Kim, H., Kamagata, Y. and Nakamura, K. (2003). "Gemmatimonas Aurantica Gen. Nov., Sp. Nov., a Gram-Negative, Aerobic, Polyphosphate-Accumulating Micro-Organism, the First Cultured Representative of the New Bacterial Phylum Gemmatimonadetes Phyl. Nov." International Journal of Systematic and Evolutionary Microbiology 53: 1155-1163." name="eprints.referencetext" />
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<meta content="The hydraulic performance of pipelines can be significantly affected by the presence of biological growth on internal surfaces. The change in wall roughness brought about by the biofilms has been studied by the use of headloss tests, pre- and post-cleaning, of the pipelines in three Tasmanian hydroelectric schemes.
Results of the headloss testing show that improvements to hydraulic efficiency can be achieved from the cleaning of biofouling material. The data when plotted as a Moody diagram shows that the friction law for conduits roughened by biological growths may not always follow a Colebrook-White type relationship, although the results are too narrow in Reynolds number to be conclusive.
It was found that bacteria made up the majority of the biofilm biomass in the pipelines studied. Based on molecular analysis, members of the class Alphaproteobacteria were the most frequently detected followed by members of the phylum Chloroflexi." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Hydraulic roughness of biofouled pipes, biofilm character, and measured improvements from cleaning</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Barton, Andrew F.</span> and <span class="person_name">Wallis, Michael R.</span> and <span class="person_name">Sargison, Jane E.</span> and <span class="person_name">Buia, Alexandru</span> and <span class="person_name">Walker, Greg J.</span> <xhtml:em>Hydraulic roughness of biofouled pipes, biofilm character, and measured improvements from cleaning.</xhtml:em> Journal of Hydraulic Engineering . ISSN 0733-9429 (Submitted)</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2257/1/Hydraulic_Roughness_and_Cleaning.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2257/1/Hydraulic_Roughness_and_Cleaning.pdf"><span class="ep_document_citation">PDF (Author Version)</span></a> - Full text restricted - Requires a PDF viewer<br />80Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2841" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.pubs.asce.org/journals/hydraulic/">http://www.pubs.asce.org/journals/hydraulic/</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The hydraulic performance of pipelines can be significantly affected by the presence of biological growth on internal surfaces. The change in wall roughness brought about by the biofilms has been studied by the use of headloss tests, pre- and post-cleaning, of the pipelines in three Tasmanian hydroelectric schemes.
Results of the headloss testing show that improvements to hydraulic efficiency can be achieved from the cleaning of biofouling material. The data when plotted as a Moody diagram shows that the friction law for conduits roughened by biological growths may not always follow a Colebrook-White type relationship, although the results are too narrow in Reynolds number to be conclusive.
It was found that bacteria made up the majority of the biofilm biomass in the pipelines studied. Based on molecular analysis, members of the class Alphaproteobacteria were the most frequently detected followed by members of the phylum Chloroflexi.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Biofouling, Hydraulic roughness, Pipe cleaning</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/290802.html">290000 Engineering and Technology > 290800 Civil Engineering > 290802 Water and Sanitary Engineering</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2257</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Dr Jane Sargison</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">22 Oct 2007 23:52</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2257;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2257">item control page</a></p>
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