Subhub 200kw Version Delivered to Tocardo

QED Naval has recently delivered the specification and plans for a 200kW version of the Subhub to suit their 4,5m diameter rotor which operates in tidal streams of up to 4,5m/s.

CFD mesh on the Tocardo nacelle and turbine rotor.

Tocardo are considering the Subhub platform to take advantage of the quick deployment rates it offers and the large improvements in power output.

QED Naval collaborate with CMS

QED Naval have been invited to support a bid to develop an offshore wind foundation and delivery vessel called DTI-50. The highly innovative DTI-50 concept was developed by Concrete Marine Solutions (CMS).

Morrison Construction are heading a consortium of partners bidding for funding from Scottish Enterprise Offshore wind foundation fund including collaborative partnership including Mott MacDonald, CMS and QED Naval. 

QED Naval have been asked to support the stability and motions characteristics and Naval Architecture requirements of the DTI-50 foundation during its operational life and the transportation barge.

DTI-50 through the various stages of development.

Further collaboration with CMS is expected between CMS and QED Naval on the Subhub project where CMS will provide their expertise to produce a concrete version of Subhub offering the most commercially viable solution.

QED Naval Opens the Door to Collaboration with Tidal Developers

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.

QED Naval Team up to Full Strength

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.

Ian Smithson Joins QED Naval Team

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.

SE SMART Feasibility Study Gets Underway

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.

ANSYS Provide the Power to Simulate Subhub’s Capabilities

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.

QED Naval Offers a Great Job Opportunity

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.

Marine renewable engineering and design consultants