BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Analysis of aberrations generated in aerodynamic random media usin
 g computational fluid dynamics
DTSTART;VALUE=DATE-TIME:20110714T150000Z
DTEND;VALUE=DATE-TIME:20110714T170000Z
DTSTAMP;VALUE=DATE-TIME:20260711T203758Z
UID:indico-contribution-4878@events.saip.org.za
DESCRIPTION:Speakers: Cosmas Mafusire (CSIR National Laser Centre)\nMedia 
 generated by random mixing of hot and cold gases can be of great importanc
 e for laser beam propagation. However\, it is not always possible to repre
 sent the media’s behaviour using simple formulation. This opens the door
  for the use of numerical methods. We show that\, for aerodynamic media\, 
 we can use computational fluid dynamics (CFD) software to acquire density 
 distribution data to characterize both local and overall behaviour of the 
 media. Using the Gladstone-Dale law\, we acquired refractive index distrib
 ution which we use to calculate Zernike coefficients from the respective l
 ocal phase values at various sections of the media. We show that once we h
 ave this data\, we can simulate the propagation of laser beams of various 
 shapes in such media. We apply the method to analyse a spinning pipe gas l
 ens (SPGL) which is a horizontal pipe whose walls are heated rotated along
  its axis. We show that the results from the model agree with the SPGL exp
 erimental results.\n\nhttps://events.saip.org.za/event/7/contributions/487
 8/
LOCATION: Asteria
URL:https://events.saip.org.za/event/7/contributions/4878/
END:VEVENT
END:VCALENDAR