Visualization of DNS data via Virtual Reality

Visualization of DNS data via Virtual Reality

Jean Santiago, HPCVLab, University of Puerto Rico at Mayaguez
Guillermo Araya, HPCVLab, University of Puerto Rico at Mayaguez

High spatial/temporal resolution Direct Numerical Simulation (DNS) of a spatially-developing turbulent boundary layer subject to a very strong favorable pressure gradient (FPG) is performed, by imposing an acceleration parameter of K = 4x10E-6. The strong flow acceleration provokes ``quasi-laminarization" since there are significant enduring turbulence intensities and Reynolds stresses in the FPG zone, therefore, the flow is not completely laminar. An important symbiosis between quasi-streamwise vortices and low-speed streaks (or regeneration cycle) has been observed in the FPG zone (J. of Visualization, 21, pp. 191-202, 2018 and 22, pp. 529–540, 2019). It has been hypothesized that this interaction is the main responsible for ``residual turbulence production", keeping the flow “alive” or laminarescent. In this video, we show how a DNS database can be ``immersively" visualized in Virtual Reality (VR).