Leicester, United Kingdom

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    ABSTRACT: Abstract This paper presents development of water network model reduction software, Simplifier2. The application can be integrated with other concepts applied to water distribution system or it can be used as a standalone tool for the purpose of the model simplification only. The utilisation of parallel programming techniques and sparse matrices ordering algorithms drastically increased the speed of simplification. Simplifier2 is able to reduce the water network model, consisting of several thousand elements, in less than 1 minute calculation time. Simplifier2 has been already successfully utilised in a number of research and commercial projects.
    Full-text · Article · Dec 2015 · Procedia Engineering
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    ABSTRACT: Abstract The work in this paper describes a study of quantised state systems in order to formulate a new framework within which water distribution systems can be modelled and simulated. In contrast to the classic time-slicing simulators, depending on the numerical integration algorithms, the quantisation of system states would allow accounting for the discontinuities exhibited by control elements in a more efficient manner, and thereby, offer a significant increase in speed of the simulation of water network models. The proposed approach is evaluated on a case study and compared against the results obtained from the Epanet2 simulator and OpenModelica.
    Full-text · Article · Dec 2015 · Procedia Engineering
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    ABSTRACT: This paper proposes a structure of an integrated mathematical model of a membrane bioreactor (MBR) and describes the links between two main parts of a MBR model: the bioreactor and the membrane. In case of an immersed MBR three types of links are considered: a relationship between specific cake resistance (SCR) and extracellular polymeric substances (EPS) in the bioreactor, a relationship between air scour rate and shear stresses on the membrane surface, and a relationship between concentration of soluble microbial products (SMP) in the bioreactor and rate of pore constriction. While SMP concentration features directly in the equations of pore constriction, EPS are assumed to affect SCR which in turn has an effect on cake filtration. The relationship between EPS and SCR is described with a linear algebraic equation. Shear stresses on the membrane surface are calculated as a function of air scour rate with a one-dimensional slug flow model.
    Full-text · Article · Dec 2015 · Procedia Engineering


  • Address
    The Gateway, LE1 9BH, Leicester, United Kingdom
  • Head of Institution
    Vice-Chancellor Professor Dominic Shellard
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  • Phone
    +44 (0)116 2 50 60 70
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Top publications last week by reads

Journal of Clinical Nursing 04/2004; 13(3a):45-53. DOI:10.1111/j.1365-2702.2004.00926.x
90 Reads
The Northern Ireland legal quarterly 01/2015; 66(2):179-197.
59 Reads

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