Showing posts with label letter. Show all posts
Showing posts with label letter. Show all posts

Wednesday, 13 November 2013

Reply to 'FDS and the Challenge of Big Data'

While on the Tube's District Line from the office, I read the most recent blog article written by the developers of FDS. It is titled "FDS and the Challenge of Big Data".

For those of you who do not know it, FDS stands for Fire Dynamics Simulator, and it is the state of the art in fire modelling. It is a fine, advanced and excellent code of Computational Fluid Dynamics  (CFD), especially developed to simulate the behavior of flames and smoke in buildings and large open spaces. Its source code, in FORTRAN, is open and freely avaible to all. The work of development and maintenance is mostly carried by staff at NIST (VTT at Finland also plays a major role). NIST stand for National Institute of Standards and Technology, and it is a USA government agency which mission is to "promote U.S. innovation and industrial competitiveness by advancing science and technology".

Their blog article is mostly a complain. It is formulated around the apparent lack of good collaborations from academia around the world to support their difficult task of developing and maintaining FDS. They think the reason for this is down to the "publish or perish" stereotype, and use a blog article from a Cosmology researcher who expresses similar frustrations with academia.

I have four points to make regarding the FDS blog article:

0) Thank you. I felt bad that you think your contributions go thankless.This is unfair, because FDS is the state of the art, it is provided without cost and openly for all around the world to use. It has tremendously helped the Fire Safety Engineering community to develop further.

1) Test You Hypotheses. You should make sure you know and understand your potential collaborators, specially before you criticize them in the open. For example, the "primary currency of the academic reward structure" in engineering departments is funding and industrial relevance, not published papers. Be aware of using a Cosmology case to run your arguments against academic users of FDS who are mostly from engineering departments. Also, note that there are more jobs for research in Cosmology than for research in Fire Safety, so I find your final kick "there are only so many jobs available in cosmology" ill suited to the critique.

2) More Carrots. Find some of the true rewards that match the motivation of your potential collaborators. For example, I suggest you create the yearly NIST Award for Outstanding Contributions to FDS. This would create recognition and esteem which are highly valued in academic CVs, more than a bunch of papers, and in some cases it is the key for obtaining a position or promoting.

3) Elephant in the Room. Lets we forget that academia has played an essential role in the success of FDS, maybe also a thankless task. I have said in the past [*] that I believe the industrial success of FDS lies on three pillars; it is free, it is excellent for research, and there are hundreds of papers showing good modelling results (just google it). The third point is because no other fire code has ever received so much publication attention. The difference with other fire codes being of two orders of magnitude. This very high number of journal papers and the multiple open discussions taking place in any fire conference every single year have promoted somehow the image that FDS is 'the validated', 'the accepted' or 'the standard' model for a wide range of industrial designs. And industry uses FDS extensively, in thousands of fire protection projects worldwide in any one year, with the approval of the corresponding authorities. Hence, FDS contributes to fulfill the mission of NIST, and promotes innovation and industrial competitiveness by advancing science and technology, in the USA and also in the rest of the world. This industrial projection is thanks to all the research users of FDS who decided to publish and go public at some point. Thanks go to them too.

[*] Advantages and Disadvantages of Fire Modelling, Irish Chief Fire Officers Association Annual Conference, Dundalk, May 2012.

Thursday, 5 July 2012

Geoengineering and Burt Rutan - The Economist

Letter to the Editor of The Economist sent on 6 of June 2012.

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Dear Sir,

SpaceShipOne (designed by Mr Rutan)
at the National Air and Space Museum, Washington D.C.
Photo from wikipedia.
In your last Brain Scan article ("A maverick in flight", Technology Quarterly, June 2012) on the accomplishments of Burt Rutan, a pioneering and unconventional aerospace engineer, I find entertaining how Mr Rutan uses acrobatics to announce that global warming will lead environmentalists into an engineering breakthrough. He refers to unprecedented global warming and the tipping point for atmospheric carbon dioxide as "it’s just nonsense".

But this might not be a pejorative term for him. The statement is followed by the clarification:
 "You run into them [breakthroughs] when you’ve found something that doesn’t make sense and you find a way to make it work".

Maybe he is announcing the arrival of geoengineering. I would approve.

Best Regards,

-
Dr Guillermo Rein
Senior Lecturer in Mechanical Engineering
Imperial College London
http://www.eng.ed.ac.uk/~grein

Friday, 22 June 2012

Safety disadvantage of Plastic houses

Letter to the Editor of The Independent. Sent on 22 Jun 2012

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Dear Sir,

EFTE roofs used in the Eden Project (wikipedia)
In your article "Here's one I won earlier" (21 Jun 2012), Alex Aldridge describes the winning idea of "Plastic houses" (eco homes with ETFE roofs) at the European Inventor Awards. He mentions its three main advantages (energy efficiency, blasts resistant, and light weight) but only two minor disadvantages (easy to cut through, noisy in rain).
He forgot to mention the most important of the disadvantages that happens to cancel one of advantages: while EFTE might be suited to resist terrorist bomb blasts, it definitely cannot resist fire. Moreover, it feeds to it as EFTE is a flammable material.

This brings bad news to plastic housing from a safety perspective.

Best Regards,
Dr Guillermo Rein
Senior Lecturer in Mechanical Engineering
Imperial College London
http://www.imperial.ac.uk/people/g.rein