Improvements in vortex flow control design to increase sewer network flood resistance
Newton, Christopher J.; Jarman, D.S.; Memon, Fayyaz; et al.Andoh, Robert; Butler, David
Date: 2013
Conference paper
Publisher
International Water Association (IWA)
Abstract
Flow controls are used within the water industry to manage the flow through sewer
networks by attenuating flows at convenient or critical locations. Many sewer networks, regardless
whether the systems have a flow control installed, are predicted to become stressed in the future
due to the effects of climate change, ...
Flow controls are used within the water industry to manage the flow through sewer
networks by attenuating flows at convenient or critical locations. Many sewer networks, regardless
whether the systems have a flow control installed, are predicted to become stressed in the future
due to the effects of climate change, population growth and urbanisation. This issue is compounded
by the age of the Britain’s sewerage infrastructure as well as the cost and difficulty of replacing
and upgrading the infrastructure. Statutory ‘Catchment Flood Management Plans’ have been
introduced within the United Kingdom to tackle this issue by better understanding the flow path of
flood water on a catchment scale. This paper discusses a method to maximise the use of the current
sewerage infrastructure by installing flow controls, meaning a greater volume of the sewer network
can be used for stormwater storage. This paper continues by describing a method of increasing a
sewer network’s flood resistance by using vortex flow controls with a lower design flow-rate
compared to an orifice plate. This paper then concludes by describing three case studies
demonstrating the use vortex flow controls when retrofitting sewer networks as well as the impact
of implementing the retrofit design method.
Engineering
Faculty of Environment, Science and Economy
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