Texas A&M University aerospace engineering Ph.D. candidate Shriram Jagannathan won first place in the university's Immersive Visualization Center's sixth annual competition.
Students from a range of disciplines presented work ranging from virtual reality games to turbulent flows. Students created a visualization using data of their choosing and were judged based on visual appeal, scientific accuracy or artistic merit (as applicable), and verbal presentation.
Jagannathan's entry, "Visualization of Coherent Structures in Incompressible and Compressible Turbulent Flows," focused on stereoscopic visualization of shocklets, vortices and high Mach number regions in a compressible turbulent flow. The visualization provided important physical insight. They showed, for example, that shocklets (highly compressed regions) move much faster than the mean fluid motion, and that regions of high Mach number tend to be more intermittent at high Reynolds number.
Jagannathan and his advisor, Professor Diego Donzis, conduct massively parallel direct numerical simulations to investigate existing fundamental issues in the field of turbulence. These high-fidelity simulations generate a wealth of spatial and temporal information regarding the flow that typically require extensive statistical and visual analysis.
For this competition, the latter was chosen for two type of flows (compressible and incompressible) and significant flow structures in each of these were educed. The method of eduction and applications of identifying these flow structures were highlighted in the talk. The incompressible flow simulations were conducted during Jagannathan's master's work. The prize included a Nvidia Quadro 6000 graphics card.