https://www.scipedia.com/wd/index.php?action=history&feed=atom&title=Bentzen_et_al_2014aBentzen et al 2014a - Revision history2026-04-23T15:06:03ZRevision history for this page on the wikiMediaWiki 1.27.0-wmf.10https://www.scipedia.com/wd/index.php?title=Bentzen_et_al_2014a&diff=216691&oldid=prevScipediacontent: Scipediacontent moved page Draft Content 959081566 to Bentzen et al 2014a2021-02-16T11:15:08Z<p>Scipediacontent moved page <a href="/public/Draft_Content_959081566" class="mw-redirect" title="Draft Content 959081566">Draft Content 959081566</a> to <a href="/public/Bentzen_et_al_2014a" title="Bentzen et al 2014a">Bentzen et al 2014a</a></p>
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</td></tr></table>Scipediacontenthttps://www.scipedia.com/wd/index.php?title=Bentzen_et_al_2014a&diff=216690&oldid=prevScipediacontent: Created page with " == Abstract == Several experiments have been conducted in order to improve the understanding of the wastewater drag and the wall frictional force acting on the headspace air..."2021-02-16T11:15:05Z<p>Created page with " == Abstract == Several experiments have been conducted in order to improve the understanding of the wastewater drag and the wall frictional force acting on the headspace air..."</p>
<p><b>New page</b></p><div><br />
== Abstract ==<br />
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Several experiments have been conducted in order to improve the understanding of the wastewater drag and the wall frictional force acting on the headspace air in gravity sewers. The aim of the study is to improve the data basis for a numerical model of natural sewer ventilation. The results of the study shows that by integrating the top/side wall shear stresses the log-law models for the air velocity distribution along the unwetted perimeter resulted in a good agreement with the friction forces calculated by use of the Colebrook-White formula for hydraulic smooth pipes. Secondly, the water surface drags were found by log-law models of the velocity distribution in turbulent flows to fit velocity profiles measured from the water surface and by integrating the water surface drags along the wetted perimeter, mean water surface drags were found and a measure of the water surface drag coefficient was found.<br />
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== Original document ==<br />
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The different versions of the original document can be found in:<br />
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* [https://vbn.aau.dk/da/publications/d2cda345-769d-4461-8a14-dca63ba87484 https://vbn.aau.dk/da/publications/d2cda345-769d-4461-8a14-dca63ba87484]<br />
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* [https://vbn.aau.dk/da/publications/82a7d3c8-cb9d-4955-86f0-58f9c5d9e7f5 https://vbn.aau.dk/da/publications/82a7d3c8-cb9d-4955-86f0-58f9c5d9e7f5],<br />
: [https://doi.org/10.2175/106143016X14504669767698 https://doi.org/10.2175/106143016X14504669767698]<br />
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* [ ]</div>Scipediacontent