I met Nicolas Delbosc at NVScene at GTC2014 conference in San Jose. This is the result of this meeting :-)
Tau=0.51
Tau=0.501
-- Update 2014-04-30: youtube anim with steps http://youtu.be/v9Xpkab9K6g:
Computer Simulations in Physics. Numerical modelling of natural phenomena. All written by me in C/C++/HTML5. Most of them are with the code available from me,