Currently a third year PhD student and has already produced some outstanding work. He is the guy behind smoke3d (code.google.com/p/smoke3d), 2dsmoke and other open source fluid code out there.
He invented flip3d, sheet preserving fluids (http://vacation.aid.design.kyushu-u.ac.jp/~and/sheetflip/index.html ) as well as highly adaptive liquid simulation recently published at SIGGRAPH 2013 (http://pub.ist.ac.at/group_wojtan/projects/2013_Ando_HALSoTM/index.html)
Whats realy good about him is that he has kept all of his work open sourced with a permissive BSD license. Really awesome work.