måndag 13 juni 2011

Mathematical Secret of Flight 2

Computed turbulent flow velocity around a NACA0012 wing at 15 degrees angle of attack in beginning stall with separation on top of the wing.

An updated version of my talk on June 15 at Svenska Mekanikdagar 2011, is now available for preview as
describing joint work with Johan Hoffman and Johan Jansson.

This work shows that computation of mean values such as lift and drag of an airplane, car or boat can be accurately computed without resolving thin boundary layers. Based on the computations a new mathematical theory for flight is presented which is fundamentally different from that by Kutta-Zhukovsky-Prandtl filling text books. The new flight theory was
first published in Normat 57:4 (2009) as The Mathematical Secret of Flight.

The spell of Prandtl as the father of modern fluid mechanics of attributing both lift and drag as effects of thin boundary layers requiring unreachable quadrillions of mesh points for computational resolution, can thus be broken. This opens a wealth of applications of computational fluid dynamics suddenly reachable with millions of mesh points.

The new theory of flight is presented in Mathematical Simulation Technology, a book which was officially banned by KTH in November 2010, as described in posts on KTH-gate. The reader can act as referee and decide if the ban is motivated from a scientific point of view. The last time a math book was banned was in 1632.

9 kommentarer:

  1. That's a great article! The neatly organized content is good to see. Can I quote a blog and write it on my blog? My blog has a variety of communities including these articles. Would you like to visit me later? keo nhacai


    SvaraRadera
  2. I must thank you for the efforts you’ve put in writing this blog. I am hoping to view the same high-grade blog posts from you later on as well. In fact, your creative writing abilities has inspired me to get my very own blog now ?? Thank you for the auspicious writeup. Feel free to visit my website; 배트맨토토프로

    SvaraRadera
  3. I like what you guys are up too. Such clever work and reporting! Keep up the superb works guys I¦ve incorporated you guys to my blogroll. I think it’ll improve the value of my site Feel free to visit my website; 카지노사이트위키

    SvaraRadera
  4. webgirls In terms of preventing candida albicans, victims often have their job remove for them. The reason being yeast infections can readily grow to be constant and ongoing. Knowing that, in this article, we will provide a variety of some of the best verified candida remedy and prevention tips all around.

    SvaraRadera
  5. webgirls With regards to battling candida albicans, sufferers often have their operate remove for these people. Simply because candidiasis can simply grow to be long-term and continuous. With that in mind, on this page, we will current a variety of some of the best confirmed candida albicans treatment and avoidance suggestions all around.

    SvaraRadera
  6. https://gameeffect.xyz A lot of people have loved the video game of baseball for several years. There are actually followers around the globe, from committed small-leaguers to perish-tough spectators. This information has tips to demonstrate how satisfying baseball really is.

    SvaraRadera
  7. https://gameboot.xyz The truth is them on mags and on Television, men and women who appear to be their forearms and thighs and legs will explode since their muscle tissues are really large! There is no will need that you can consider your body to that stage if you don't desire to, as being the basic tactics on this page will help you construct muscle mass inside a wholesome manner.

    SvaraRadera