User:Srlg36/Ludwig prandtl

Article body
Later years (from the original article)

In 1922 Prandtl, together with Richard von Mises, founded the GAMM (the International Association of Applied Mathematics and Mechanics). and was its chairman from 1922 until 1933. Until 1945 he also worked closely with the RLM.

My additions to the Later Years Section

Prior to World War I, the Society of German Natural Scientists and Physicians (GDNÄ) was the only opportunity for applied mathematicians, physicists, and engineers in German speaking countries to discuss. In 1920, they met in Bad Nauheim and came to the conclusion that there was a need for a new umbrella for applied sciences due to their experience during the war. In the same year, physicists primarily from industrial laboratories formed a new society called the German Physical Society (DGTP). In September 1921, the two societies held a meeting with the German Mathematical Society (DMV) in Jena. In its first volume, ZAMM (Journal of Applied Mathematics and Mechanics) stated that this meeting "for the first time, applied mathematics and mechanics was coming to its own to a larger extent" This journal advertised the common goals of Prandtl, Theodore von Kármán, Richard von Mises, and Hans Reissner.

On top of the foundation of ZAMM, the GAMM (International Association of Applied Mathematics and Mechanics) was also formed due to the joint efforts of Prandtl and his peers. After these initial meetings of GAMM, it became clear that there was now a new international community of mathematicians, "scientific engineers", and physicists.

From the Article (my changes will be in bold):

The effect of the paper was so great that Prandtl would succeed Hans Lorenz as director of the Institute for Technical Physics at the University of Göttingen later in the year. In 1907, during his time at Göttingen, Prandtl was tasked with establishing a new facility for model studies of motorized airships called Motorluftschiffmodell-Versuchsanstalt (MVA), later the Aerodynamische Versuchsanstalt (AVA) in 1919. '''The facility was focused on wind tunnel measurements of airship models with the goal of shapes with minimal air resistance. During WWI, it was used as a large research establishment with many tasks including lift and drag on airfoils, aerodynamics of bombs, and cavitation on submarine propeller blades. In 1925,''' the university spun off his research arm to create the Kaiser Wilhelm Institute for Flow Research (now the Max Planck Institute for Dynamics and Self-Organization).

LATER IN SECTION:

Following Prandtl's investigation into instabilities from 1921-1929, he then moved to exploring developed turbulence. This was also being investigated by Kármán, resulting in a race to formulate a solution for the velocity profile in developed turbulence. '''Regarding the professional rivalry that started between the two, Kármán commented: “I came to realize that ever since I had come to Aachen my old professor and I were in a kind of world competition. The competition was gentlemanly, of course. But it was first-class rivalry nonetheless, a kind of Olympic games, between Prandtl and me, and beyond that between Göttingen and Aachen. The ‘playing field’ was the Congress of Applied Mechanics. Our ‘ball’ was the search for a universal law of turbulence.”''' Around 1930, the race ended in a draw as both men concluded that the inverse square of skin friction was related to the logarithmic value of the product of Reynold's number and skin friction as seen below where k and C are constants.

In response to the peer review:

Per the recommendation in the peer review, I will try to seek out another source. I currently have two, but another definitely couldn't hurt to have as reference. I will continue to add information from my bulleted list and cite them. I will try to remain unbiased, ensure that what I add flows well with the article, and keep the details I add to the article important to the topic.

Points that could be mentioned (this is just so I can keep track of possibilities from the sources I have)
 * Wind tunnel sphere investigation and bounder layer concept (Eckert, 385)
 * Göttingen wind funnel vs. Gustave Eiffel's wind tunnel
 * 1914, he and Carl Wieslesberger trip wire experiment
 * Working program for theory (maybe?) (Eckert, 386)
 * Prandtl-Tietjens approach (Eckert, 388)
 * Student Oskar Tietjens
 * Instability problems
 * Solved by Tollmien in 1929
 * GAMM and conference presentations (Eckert, 389)
 * Dresden, 1925
 * Again in more detail in Göttingen and Zurich in 1926
 * Mixing length approach and Kármán's modifications (Eckert, 390)
 * Kármán and Prandtl's claims of who did what (Eckert, 390-391)
 * Nobel Prize opinions (maybe?) (Eckert, 393)
 * Kaiser-Willhelm-Institute and why he was the head (Eckert, 394)
 * Hot wire techniques (Eckert, 395)
 * Fourth and Fifth Congress (Eckert, 395-396)
 * Symposium and politics (Eckert, 397-398)
 * Post-WWII work (Eckert, 398)
 * Prandtl's approach to solving problems (Eckert, 399-400; Darrigol, 286-289)
 * Water tank, teaching at Hannover, and 1905 report (Darrigol, 283-286)
 * Göttingen (Darrigol, 291-292)
 * Wing theory in 1910s to turbulence in 1921 (Darrigol, 294)
 * Wing theory publications (Darrigol, 316)
 * Lanchester's trailing vortex and Helmholtz's vortex theorems (Darrigol, 317)
 * Betz and Prandtl (Darrigol, 319-320)
 * Memoir and approximations for wing problem (Darrigol, 321)
 * "Prandtl Correction (Darrigol, 321)