72th Annual Meeting of the APS Division of Fluid Dynamics (November 23, 2019 — November 26, 2019)

V0070: 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
DOI: https://doi.org/10.1103/APS.DFD.2019.GFM.V0070

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).

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