Once upon a time there were several members representing the Fluid Dynamics Group.

After my retirement, I alone represent the Fluid Dynamics Group,
doing research work in several fields.

In addition, I picked up my most beloved subject
of applied mathematics, especially the historical question,
wherefrom the special functions came into discussion and
what motivated the famous mathematicians of earlier times
to investigate them so carefully.

---

---

Prof. Dr.rer.nat. K. G. Roesner
http://www.kgroesner.de
Gesamtverzeichnis der Veröffentlichungen - List of publications

Current research:

Experimental investigation:

• Wake flow of an evaporating polyethylene sphere under gravity
  (vortex formation in the wake depending on the amount of evaporated material)
  

  ---

  
  
• Sound emission of gas bubbles
  released from a small orifice in water
  (level of noise reduction by special formation of the orifice shape)
  

  ---

  
  
• Transition to turbulence in an ultracentrifuge
  (small scale experiment in a cylinder driven by air lubricating jets)
  

  ---

  
  
• Influence of roughness elements
  on the stability of cylindrical Couette flow
  (Theoretical and experimental investigation of slip boundary condition)
  

  ---