Comments for Andrew Birkett's blog http://www.nobugs.org/blog Thoughts of a software engineer Thu, 28 Feb 2013 19:36:51 +0000 hourly 1 http://wordpress.org/?v=3.5.1 Comment on Myron Tribus by Szymon Jachim http://www.nobugs.org/blog/archives/2013/02/17/531/comment-page-1/#comment-86004 Szymon Jachim Thu, 28 Feb 2013 19:36:51 +0000 http://www.nobugs.org/blog/?p=531#comment-86004 Isn’t it actually the same entropy observed, measured differently?
http://arstechnica.com/science/2012/03/information-and-entropy-finally-linked-through-experiment/

]]> Comment on Turbulence by Andrew http://www.nobugs.org/blog/archives/2013/01/14/turbulence/comment-page-1/#comment-85221 Andrew Fri, 25 Jan 2013 21:08:06 +0000 http://www.nobugs.org/blog/?p=521#comment-85221 Interesting. “Anemometry” .. now that’s not an easy word to say.

]]> Comment on Turbulence by Tim http://www.nobugs.org/blog/archives/2013/01/14/turbulence/comment-page-1/#comment-85165 Tim Thu, 24 Jan 2013 10:19:18 +0000 http://www.nobugs.org/blog/?p=521#comment-85165 CFD comparisons: in a nutshell that’s why windtunnels still exist; while CFD is very good (and improving) there are lots of areas (usually the most interesting ones) where the CFD codes just aren’t good enough: hypersonics, anything involving heat transfer & fluid flows, turbulence (in general), simulations where you need to model across a broad spatial scale range, etc. Most of our wind tunnels campaigns were for other aerospace companies e.g. boeing, airbus, eurocopter and in turn we were just a small part of the experimental picture; we could di instantaneous 2D with 2C, 2.5C velocity measurements but not time resolved; LDA is normally used for time resolved measurements but that in turn is point wise…

]]> Comment on Turbulence by Andrew http://www.nobugs.org/blog/archives/2013/01/14/turbulence/comment-page-1/#comment-85052 Andrew Mon, 21 Jan 2013 22:03:27 +0000 http://www.nobugs.org/blog/?p=521#comment-85052 It’s by Frank White – http://www.amazon.co.uk/gp/product/0071311211

I once went to a Ed Scifest talk by a F1 aero bod. I wanted to ask him to what degree they trust their CFD simulations – as in, do they ever get to the track or wind tunnel and find the aerodynamics are substantially different from those out of the sim. Unfortunately, the chairpersondude didn’t pick me for a question.

Hey, Tim – did you ever compare CFD results with your funky wind tunnel? Presumably there’s a reason why F1 teams and Boeing/etc still have wind tunnels and don’t totally rely on sims?

]]> Comment on Kindle Fire versus “our stuff”? by Tim http://www.nobugs.org/blog/archives/2013/01/16/kindle-fire-versus-our-stuff/comment-page-1/#comment-85025 Tim Mon, 21 Jan 2013 10:17:27 +0000 http://www.nobugs.org/blog/?p=526#comment-85025 The next thing you should worry about is: at what point will you cease to actually own the stuff stored in the cloud; music especially seems to be moving in this direction. What, you want to sell the thing you paid for? Nonononono.

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