lecture 5 (scale and testing) v1.1

project 5 (wind tunnel design) v1.0

Quite a hefty lecture, that will need some clean-up next year. An enormous amount of material was created for these slides.

A set of remarks accompanies this release on my blog.

Other people’s work used in these slides:

• A few unattributed figures and drawings (please help me identify them!)
• Two quotes from Bertin 2008 (not an extraordinary book but rather solid)
• A quote from the most excellent Phillips 2009, go buy this book!
• Many photos from NASA (Public domain, most of which found on the commons Wind tunnels category page)
• Portrait of Prandtl GPL by DLR-Archiv Göttingen
• Prandtl’s apparatus in 1904 PD Universität Göttingen
• Cover from Bernouilli’s Hydrodynamica PD
• Part of Bernouilli’s Hydrodynamica’s cover PD
• A glorious Moody diagram GFDL S. Beck and R. Collins, University of Sheffield, may these people be greatly thanked!
• A quote from Barlow et al 1999, a very good and clear book
• Wright Brothers’ wind tunnel CC by-sa Wikimedia contributor Axda0002
• NASA Langley wind tunnel areal photography, CC by Jitze Couperus, lost link =(
• NASA Langley front photography, CC by-sa Wikimedia contributor Andareed, lost link =(

Public Domain media scanned/reworked from books and contributed back:

• Reynolds’drawing of his own 1883 experiment
• Reynolds’observations in his 1883 experiment
• Ernst Mach’s first successful photography of a shockwave, 1888

Derivative works:

• Boundary layer velocity profile CC by-sa Wikimedia contributors F l a n k e r | Olivier Cleynen
• Sub-sonic and trans-sonic airfoils CC by-sa Olivier Cleynen | PD Wikimedia contributor Pbroks13 | PD NASA

Media built for this lecture and released on the Wikimedia Commons:

• Elementary flows for potential flow theory CC-0, by Olivier Cleynen
• Types of flow analysis in fluid mechanics CC by-sa Olivier Cleynen

Media built for this lecture, not yet released:

• A320 wing profile (will be a nice one)
• Reynolds-number effects on flow attachment figure
• Pressure variation in tubes figures (will require work on Bernouilli eq. page to help anywhere)
• A few pictures, mostly of a wind tunnel, by myself.

The beutiful 1904 drawings by Ludwig Prandtl are not published on the Commons, because although they are public domain in the USA (published before 1923) they are not in Germany (Prandtl died in 1953). +70 years brings us to August 2023!