0 Persons are tagged with #wing

#wing

mkwadee@diasp.eu
Khurram Wadee

Following on from yesterday's posting of flow around a #ZhukovskyAerofoil, I've added #equipotential lines (blue) in addition to #streamlines (black). The two families are #contours of the #real and #imaginary parts of an #AnalyticFunction and therefore have the property of intersecting #orthogonally. The plots aren't ideal as there is some anomalous features where the equipotential lines are very close to the #aerofoil but it's still not bad.

Here, each frame is a different #wing profile, obtained this time by keeping the imaginary eccentricity of the generating #circle constant and varying only the real part.

#MyWork #CCBYSA #AppliedMathematics #Aeronautics #Aerodynamics

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mkwadee@diasp.eu
Khurram Wadee

The #Zhukovsky #Aerofoil (sometimes transliterated as #Joukowsky from #Russian), is a 2D model of #streamlined #Airflow past a #wing. It uses #ComplexVariable and is an #AnalyticFunction (i.e. #Differentiable everywhere, save at isolated #Singularities). Take a circle in the #ComplexPlane which is not quite centred at the #origin but passes through the #coordinate (1,0) or (z=1+0i). Using the mapping w -> z+1/z, you get something that looks remarkably like an #aerofoil.

It is a #ConformalMapping meaning that angles are preserved during the mapping. In this animation, I've varied the imaginary part of the the eccentricity, while keeping the real part the same. With a zero #AngleOfAttack, you can see the change in the airflow around the #wing as its shape changes.

#MyWork #CCBYSA #AppliedMathematics #WxMaxima #FreeSoftware #Aeronautics #Aerodynamics #LaminarFlow

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thanatosincarnate@pod.geraspora.de
Thanatos die immer skurrilere Minderheit

FDO's conduct enforcement actions regarding Vaxry

#hyprland again - Some highlights:

  • Hazing someone in your discord because they have pronouns in their bio
  • Speaking pretty bluntly against queer people and minorities at large
  • "at 15 he doesnt even know what he will be studying at uni and he already wanna go get AIDS?"
  • "I think this server's motto should be 'love guns, hate damn minorities'"

https://drewdevault.com/2024/04/09/2024-04-09-FDO-conduct-enforcement.html

#hyprland #fdo #freedesktop #abuse #toxicity #right #wing #extremism #vaxry

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mkwadee@diasp.eu
Khurram Wadee

While the weather is awful in Germany and Belgium, here it feels like #summer with temperatures in the high twenties and #sunshine all day. The #allium #flowers have matured and are now attracting #pollinators. (I can't remember whether these are #onions or #SpringOninons.) Here's a close up of a #Bumblebee which was flower hopping. If you look under its right #wing, you can see another #insect riding on it. I don't know if it's a parasite or whether it just happened to be hitching a ride as I can't see it in other #photographs. My hunch is that it is a parasite.

#MyWork #MyPhoto #CCBYSA #Nikon #D7000 #Nature #Horticulture

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