Publications

Two new publications

I’ve had two publications appear online in the last few weeks, in the opposite order to that in which I actually did the work. They have a lot in common, using similar methods in different locations, so I thought I’d write about them together.

The most recent is my second journal article as lead author, and one that I’m quite proud of. It covers the work that I did in Japan last year, and in the months after returning, on the tidal energy resource of the Goto Islands of Nagasaki Prefecture. We produced estimates of the amount of power that could be obtained – which is mostly of interest for the people planning tidal development in that archipelago – but of more general interest are the findings about inter-channel interactions. The Goto Islands have several parallel channels that could contain turbines. ¬†When this arrangement has been studied in other places, it has usually been found that putting tidal turbines in one channel causes flow to divert into the others, and hence that to reach the full potential for power we would have to put turbines in every channel. Goto doesn’t behave like that – instead, the channels have very little effect on each other – and in the paper we looked a little into why that is. My thanks are due, of course, to my co-authors on this work, both in Scotland and Japan.

 

Plot showing the mean power produced by different numbers of turbines in the Goto Islands.

Plot showing the mean power available from various numbers of turbines in the channels of the Goto Islands, using simplified M2 tides.

Just a few weeks ago I attended the EWTEC conference in Cork and presented this paper on Lashy Sound, which is a channel with strong tides in the Northern part of Orkney. In this work, I used very similar methods to those that were developed in Japan to look at the tidal resource – in this case, not for realistic turbine developments but in terms of the theoretical maximum available power if we didn’t care about things like environmental impact, or allowing ships through. Unsurprisingly, it looks like achieving this maximum yield would have some significant impacts. I also considered the more plausible scenario of a smaller tidal farm, similar to the 30MW one that has been planned for the area, and was able to show that its effects would be small and confined to Lashy Sound itself – something that’s important when other potential tidal energy sites are just a few km away in neighbouring channels.

Both of these papers are available for free at the links above, or at the publications page on this site.

Posted by simon in Explaining my work, Publications, Working in Japan

First journal article!

Well, sort of. My last post also listed two journal articles but I was a minor author on those, contributing a small part of the text and comments on the rest. This post is about my first article as lead author.

It’s called “Implementation of tidal turbines in MIKE 3 and Delft3D models of Pentland Firth & Orkney Waters”, and it describes work that myself and two groups at Heriot-Watt and Edinburgh Universities did a few years ago, near the start of my PhD. Lots of people have represented tidal turbines in regional-scale flow models, but most of them have used academic codes that industry and investors won’t trust, or have modified trusted code – which itself tends to undermine that trust. Our aim for this work was to look at how tidal energy extraction can best be represented in two widely-used commerical modelling suites, without modifying their code. We also did some actual modelling, by way of example, and the results of that have been passed on to others in the project to use for ecological work.

In a small way this was perhaps a baptism by fire, in that I had to pull together work and writing done by people far senior to myself, add my own work on top of each, and try to construct a single coherent publication. Perhaps partly for this reason, coupled with my own inexperience, it had a long journey through review… but it’s out there now, and I’m glad it’s done!

If you have a subscription to Ocean & Coastal Management you can read the published version here; otherwise the “accepted version” (without journal formatting) is available at this finely crafted link.

Posted by simon in Publications, Reflective

New publications!

A quick post to announce a couple of new things listed on the publications page. In both cases I’m a minor contributor.

One is a summary paper covering the TeraWatt project, and drawing out conclusions from a number of primary publications (including one of mine which, while cited in this one, is actually still in review!).

The other is an updated review of the wave and tidal energy resource of Scotland. Contributors are from multiple universities across Scotland, including myself, skilfully corralled by Simon Neill.

Keen eyes may also notice a new paper listed as “in review”, based on the work that I did in Japan last summer. More on that if and when it is published.

Posted by simon in Publications