We hold these truths to be self-evident: That all mass is conserved, all momentum flux is balanced, and energy is neither created nor-destroyed.
Author Archives: saemiller
History of the Florida Aerospace Department
Professors Richard L. Fearn and Wei Shyy wrote a short history of my department [link] – Department of Mechanical and Aerospace Engineering at University of Florida. Previously, it was a stand-alone aerospace department that merged. It is worth reading and sharing if you have a connection to UF Aerospace. [link]
On Living In An Atomic Age, Lewis
In one way we think a great deal too much of the atomic bomb. ‘How are we to live in an atomic age?’ I am tempted to reply: ‘Why, as you would have lived in the sixteenth century when the plague visited London almost every year, or as you would have lived in a Viking …
Mythologists and Theologians
“Mythologists and experimental theologians are needed for the development of a new method of attack” Telegram to Meyer while in trenches after recovery which was mistranslated from “Meteorologists and experimental physicists,” where Meyer then traveled and met Fritz Haber (german gas warfar pioneer)
Ode to Eddies
Many eddies form a cascade,Glance with the fresh wind at autumn,Ere the south wind’s enchanted shade,O, it stretches toward the water!
Prandtl and Meyer
It would be difficult to create the right mood under the present circumstances, but perhaps by accident another beautiful differential equation will come along again, as it once did when I worked with you. Letter from Meyer to Prandtl, May 5, 1918. Ref. no. GOAR:2647, DLR-Gottingen Archives
The prediction of cross-spectra from first mode instability waves within high-speed flow over sharp and blunt cones with plasma actuation
Abstract: Leading edge geometries, such as cones, moving at high-speed undergo intense loading due to the growth of instability waves and turbulent transition. These instability waves are highly spatially coherent. Aerodynamic loading related to instability waves and transition cause large-amplitude vibrations within the underlying structure, which may lead to flight-vehicle failure. We examine the effect …
On Challenges in Turbulent Flow Theory and Experiment
Research in macroscopic classical physics, such as fluid dynamics or aspects of condensed matter physics, continues to confront baffling challenges that are by no means less demanding than those at the post-Newtonian frontiers of physics that have been explored since the beginning of this century. This is so even though the basic equations of macroscopic …
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On Lift
It’s easy to explain how a rocket works, but explaining how a wing works takes a rocket scientist Philippe Spalart, Boeing Technical Fellow