Marriott, Martin John and Uddin, M.S. (2009) ‘Hydraulic design charts for elliptical pipes.’, Proceedings of Advances in Computing and Technology. (AC&T) The School of Computing and Technology 4th Annual Conference. University of East London, pp. 120-125.
Marriott, M (2009) AC&T 120.pdf - Published Version
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This paper concerns charts for the hydraulic design of elliptical pipes under partfull gravity flow conditions. Examples of such pipes are currently commercially available, and may be laid with the major axis of the cross section either horizontal or vertical. Similar charts have been published for circular pipes and for pipes of ovoid cross section, which have particular uses in combined sewerage. Such charts are useful for preliminary sizing and outline design purposes. The applications of this type of chart to elliptical pipes lead to two distinctive points that will be discussed in the paper. Firstly, the two possible orientations of the pipe resulted in different sets of lines on the chart, and these may be used to illustrate the relative performance of the two orientations, which have different practical benefits. The second point, of somewhat more academic interest, relates to the geometry of the ellipse. Although the cross sectional area of the ellipse has a well known and exact mathematical formula, the perimeter of the ellipse does not. Different approximate expressions for the total perimeter are compared with the elemental approach that was used to establish the pipe cross section geometry for the computerised production of the design charts.
|Item Type:||Conference or Event Item (Paper)|
|Additional Information:||Citation: Marriott, M.J. and Uddin, M.S. (2009) ‘Hydraulic design charts for elliptical pipes.’ Proceedings of Advances in Computing and Technology, (AC&T) The School of Computing and Technology 4th Annual Conference, University of East London, pp.120-125.|
|Divisions:||Schools > Architecture Computing and Engineering, School of|
|Depositing User:||Mr Stephen Grace|
|Date Deposited:||27 Jul 2010 14:37|
|Last Modified:||27 Sep 2012 11:59|
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