Distributed Fibre-optic Cable Sensing for Buried Pipe Infrastructure

Lead Research Organisation: UNIVERSITY COLLEGE LONDON
Department Name: Civil Environmental and Geomatic Eng

Abstract

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Publications

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Description Numerical simulations of flows in partially-filled pipes have shown that such flows contain strong secondary currents and that these disrupt and suppress very large scale turbulent motion in pipes. The result is that the turbulent shear stress is reduced and hence the overall wall friction resulting in a lower friction factor of partially-filled pipe flows in comparison to their fully-filled counterpart.
Exploitation Route This finding may lead to a redesign of pipes, so that strong secondary currents are generated, which in turn would lead to less friction in the pipe, or in other words less energy to pump the same amount of fluid through the pipe.
Sectors Construction

Energy

 
Title Research Code Enhancements 
Description The open-source code Hydro3D, based on the method of large-eddy simulation, was enahnced by a free-surface algorithm which was validated and applied to open-channel flow over a backward facing step. A Journal of Fluid Mechanics and a Journal of Hydraulic research paper document this development. 
Type Of Material Improvements to research infrastructure 
Year Produced 2021 
Provided To Others? No  
Impact Several journal publications have resulted from this development. 
 
Title Level Set Method 
Description As describd in the Research Environment section, the open source code Hydro3D was enhanced with a Level Set Method algorithm. This method is now standard for all our open-channel flow simulations. 
Type Of Technology New/Improved Technique/Technology 
Year Produced 2021 
Impact The new method resulted in a couple of fundamental research papers and will be used in future research. 
 
Title Simulation of tidal stream turbines using Hydro3D 
Description Hydro3D is an open-source Large-Eddy Simulation based code used for hydraulic engineering applications and has been recently developed to simulate tidal stream turbines. Hydro3D is written in FORTRAN 95 and is parallelised with MPI, both required to be installed prior code compilation. For a more detailed description of Hydro3D, its current development and related publications please visit: http://hydro3dproject.github.io/ Note that the current dataset gathers the input files set to simulate a single horizontal axis tidal stream turbine operating at its maximum performance and with artificial turbulence at the inflow condition. The input files (.cin) used in Hydro3D are: - control.cin - in this file all the flow conditions, numerical schemes and output paramenters are set. - geom.cin - is used to define the properties of any solid body (e.g. tidal turbine) used during the simulation. - mdmap.cin and infodom.cin - these files indicate the division pattern of the computational domain in rectangular blocks together with their assignation to CPUs. 
Type Of Technology Software 
Year Produced 2017 
Impact The code was enhanced by adding free surface algorithms. 
URL https://research-data.cardiff.ac.uk/articles/software/Simulation_of_tidal_stream_turbines_using_Hydr...