Dare I say it I'm very unlikely to achieve anything "new". What I'm hoping to do is prove or otherwise that the MLW and mesh burners do offer an improvement, both in the real world and under experimental conditions (oh look, that means I get to play trains, erm, I mean test, as part of my degree...) and also to be able to explain, with a degree of accuracy and with example equations (as opposed to a complete theoretical analysis, although that's still a possibilty if I use a CFD programme) why this is so. As I'll have to get the workshop guys to make up the burners (apparently students aren't allowed to do their own thing with the lathes) I'll probably try and get them to make up a "standard" Milton style one and one with varying hole sizes and and spacings as suggested by Chris to see if there is any difference. I'll also use mesh on the standard burner, and on all will try a bunsen style inlet air regulator. Nothing radical, but at least we should have some form of numerical explanation for the behaviour of these things.