Energy Engineering magazine has just published an article on QED Naval’s Subhub project entitled ‘the Ease of Installation’. In issue 45, 2013 they have produced a marine energy special with the Subhub featuring highly in a 4 page article. Follow this link to see the article on page 59.
The UK IPO have granted QED Naval the patent rights for a submersible anchoring apparatus and installation method for wave and tidal turbine which encapsulates the design features of the Subhub.
QED Naval now has the full capability to deliver the Subhub Feasibility Study including hydrostatic stability characteristics using Paramarine, structural response and fluid loading analysis using ANSYS Mechanical and Fluent, respectively.
We now have the technical team in place to allow us to fully utilise these tools and are keen to work with tidal developers to optimise their turbines using the Subhub foundation structure and assess its abilities to enhance the power output and the potential to reduce turbulent gusts.
Our fluid mechanics specialist, Jairo Gonzalez, has joined us today and is charged with the development of the fairing structure of the Subhub platform and the optimisation of the flow into the tidal turbine rotor. He recently joined us after completing a 2nd Post Graduate degree from Newcastle University where he studied Renewable Engineering and completed his thesis on the hydrodynamic modelling of the EvoPod tidal turbine model in ANSYS Fluent.
QED Naval is proud to welcome a new member of staff into the ranks. Ian Smithson who has recently joined us has a Renewable Energy Master degree from the University of Newcastle and has been recruited to manage the geometry development (CAD) and perform the through life structural response analysis of the Subhub during transit, installation, operation and maintenance.
Scottish Enterprise have recently released the first tranche of funding to allow QED Naval to commence with the feasibility study on the Subhub Wave and Tidal Platform. This unlocks the funds to recruit the personnel and acquire the numerical modelling software and hardware tools to complete the study.
Simulating Real-time Loads & Responses
QED Naval has recently acquired simulation and assessment tools from ANSYS to help realize and demonstrate the Subhub Platform’s promise, to significantly reduce the cost of deployment of wave and tidal turbines.
In order to assess the fluid loadings during transportation, installation and operation through life, ANSYS Fluent will be used. These working loads and more conservative extreme loads will be used to calculate the structural response of the Subhub using ANSYS Structural.
Within the ANSYS universal simulation environment, effective Fluid Structure Interaction (FSI) assessments will allow QED Naval to understand the capabilities of the Subhub and the safe operational windows which is so important when considering installation, operation and maintenance procedures within these energetic areas.
ANSYS was selected for the unique features of its unified front end, called Workbench, that can combine and share data from multi-physics design simulations and provide potential for exploring the Subhub’s key parameters using optimisation methods.
Graduate Naval Architect
This role is a exciting opportunity to join an SME and have a high degree of responsibility from the start which will quickly progress a career within Naval Architecture to Chartered Status. The candidate will experience many different aspects of engineering design and production that you just wouldn’t get from larger corporate firms. The role requires a strong independent and motivated personality who is willing to take on a challenging research and development project.
Subhub is a large marine platform for the transport, installation and operation of marine renewable turbines at the intended site. The first stage (12 months) is a feasibility study which involves:
- A sizing/parametric study of platform and the development of an initial geometry, based mainly on the assessment of the platform’s stability characteristics in all it’s operational roles to various classification standards.
- The project then moves from statics to dynamics to develop numerical models of the installation procedure whilst subjected to the powerful environmental loading conditions.
- Once confidence has been provided for the installation procedure further modelling methods will be used to determine the stability of the Subhub and turbines on the seabed during operation.
- The final part of the feasibility study is the development of a commercial model building the relationships with the supply chain required to procure this large marine structure.
The skills required by the candidate(s) place a strong emphasis on numerical analysis of marine systems and utilise state of the art Computer Aided Design (CAD)/Computer Aided Engineering (CAE) tools including GRC Paramarine and ANSYS AQWA, Mechanical (FEA), and CFX (CFD) tools. A working knowledge of one or all of these tools is preferable but the principals of how they work is essential.
For further details and to indicate and interest in the post, please submit CV’s to Jeremy Smith.
As earlier posts have suggested, QED Naval has been awarded a SMART Grant from Scottish Enterprise for £100k to conduct a feasibility study on the technical and commercial viability of Subhub. The assumptions made in the financial projections submitted to Scottish Enterprise have led to conditions that now need to be met to successfully unlock the grant. The main one being to secure £55-80k of private investment and will allow QED Naval to purchase the tools and equipment needed to perform the analysis and help secure another permanent member of staff.
Any investor interested in an equity stake in QED Naval and the Subhub concept would be welcomed. QED Naval is confident of delivering a high and quick turn around on the investment which is used to fund the R & D stages over 24-36 months. QinetiQ intend to register for EIS providing tax efficient method of investment. Please direct all enquiries towards Jeremy Smith (Director).
A start up meeting took place on the 28th September between ETP (Dr. Tom Davey), QED Naval and M.Eng Student, Steven MacKinnon who will be conducting experimental analysis on the stability and hydrodynamics of the Subhub during transportation, installation and operation within a wave and tidal environment.
Steven has just returned from a summer sabbatical with Xodus so we are confident that he is going to use this experience to the full and produce very useful results to take forward to a large scale prototype. The aim of the project is primarily to fulfil the requirements for achieving Steven’s M.Eng qualification but in doing so produce a scale model for laboratory testing using the facilities at Edinburgh University.
The geometry of the Subhub will be similar to the one produced from the initial sizing studies created by QinetiQ GRC but with some improvements integrating lessons learned from the original analysis. The model is scheduled to be completed by professional model builders by Christmas ready for tank testing early in 2013. It will be instrumented to provide validation of the numerical modelling that is due to be run in parallel to the tank testing as part of the Scottish Enterprise SMART feasibility study.