2013 Lubbock Lecture - Phoenics

28/35. Turbulence trends:A 2-member population modelcan do itLubbock,TexasOct 18 2013Applications of CFDEach member hasits own verticaldirectionvelocity.One is +ve theother –ve. Valuesare calculated fromNavier Stokes.At the start (on the left), the volume fraction is unity in thebottom half and zero in the top half.Later (in the middle) fragments of salty fluid rise, and even beginto concentrate at the upper surface.Later still (on the right), the heating has stopped; so the saltyfragments, lose heat to the fresh water and fall down to the bottomagain. Just as the video showed.Two-member models can simulate both mixing and un-mixing.