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Tidewright · University of Strathclyde

Tidal array wake study

Two devices are a conversation. An array is a neighbourhood dispute. We would like to measure the wakes before the planning inquiry does.

Tank work first, site data second. The collaboration will produce an open method note and a private dataset for participants.

Vessel time is not free. Enthusiasm is not a substitute for a risk assessment.

The technical question is straightforward to state and expensive to answer: how far downstream does a tidal device's wake meaningfully reduce the resource available to its neighbour, and how does that scale with spacing, blockage and the particular character of a site. Developers currently answer this with assumptions, and consenting authorities are beginning to ask for evidence.

A second device developer is genuinely wanted. Array interaction cannot be studied honestly with one geometry, and the participant who joins gains array-scale data that would be unaffordable alone. The commercial sensitivities are real and are addressed in the terms rather than avoided.

How it runs

The mechanics, stated plainly.

  • Phase one: tank campaign

    Scaled devices at several spacings in the Strathclyde tank complex, with wake measurement and agreed pass criteria. Roughly four months.

  • Phase two: site measurement

    Instrumented measurement at an Orkney site, subject to vessel availability and weather. Scheduled generously, because it must be.

  • Phase three: method note

    An open publication describing the method and the scaling relationships found. The underlying dataset stays with participants.

What you provide

  • A device geometry, at model scale, or the modelling capability to study one
  • A contribution to vessel and instrumentation costs, scaled to participation
  • A named engineer for the tank campaign, present rather than corresponding
  • Site data, if you hold any, for the sites under consideration

What you get

  • Array-scale wake data that no single developer could economically obtain
  • Scaling relationships usable in your own array layout decisions
  • Evidence of a kind that consenting authorities are starting to expect
  • Co-authorship of the method note, if you want it

Terms

Agreed before anybody contributes anything, which is the only moment it works.

  • Device geometries are disclosed only to the extent required for the hydrodynamics
  • The measured dataset is held by participants for two years before any release
  • The method note is published openly and names participating organisations by consent
  • Vessel and instrumentation costs are apportioned before phase two begins, not after