A numerical visualization technique based on the hydraulic analogy
- 95 Downloads
The principles of experimental visualization are widely used in developing numerical visualization techniques. Numerous techniques have been created by the simulation of experimental techniques, such as dye, smoke, surface oil, and optical techniques. In this research, a numerical visualization technique is proposed by the computational modeling of the visualization process of hydraulic analogy. First, the principle and implementation of the current technique are introduced and defined, respectively. Then, flow datasets of double Mach reflection and Rayleigh–Taylor instability are used for examining the display effects of the current technique. The effects of physical parameters and specific heat ratio on the current technique are investigated. In addition, the current technique is compared with six other techniques. The comparison indicates that the current technique not only can accurately display shock waves and slip lines, but also has an advantage in stereoscopically and cleanly visualizing vortices. Furthermore, the relationship between the current technique and numerical Schlieren and Shadowgraph is discussed. The current technique is further improved for the presentation of the information of colors and illumination. Finally, the limits of the current technique are highlighted.
KeywordsNumerical visualization technique Hydraulic analogy Implementation Display effects
This study was supported and funded by the State Key Laboratory of Aerodynamics of China (No. SKLA2017-3-4).
- Drebin R A, Carpenter L, Hanrahan P (1988) Volume rendering. In: ACM Siggraph computer graphics, vol 22, no 4. ACM, pp 65–74Google Scholar
- Heller HH, Bliss DB (1975) Aerodynamically induced resonance in rectangular cavities—physical mechanisms and suppression concepts. No: AFFDL-TR-74-133Google Scholar
- Peng Z, Laramee RS (2008) Vector glyphs for surfaces: a fast and simple glyph placement algorithm for adaptive resolution meshes. In: Proceedings of vision, modeling, and visualization 2008, pp 61–70Google Scholar
- Post FH, Van Walsum T (1993) Fluid flow visualization. In: Hagen H, Müller H, Nielson GM (eds) Focus on scientific visualization. Springer, Berlin, pp 1–40Google Scholar
- Quirk JJ (1998) AMRITA—a computational facility (for CFD modelling). In: VKI 29th CFD series, pp 23–27Google Scholar
- Tamura Y, Fujii K (1990) Visualization for computational fluid dynamics and the comparison with experiments. In: Flight simulation technologies conference and exhibit. No: AIAA-1990-3031Google Scholar