| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
A discontinuous Galerkin method for unstructured mesh for solving viscous compressible flow is developed for examining flows over submerged vortex generators (SVG) which have complicated geometries. Validation of the present numerical method is accomplished by comparing the computed results with the existing wind tunnel data.Then, flows over SVGs having either vane, doublet, and wishbone geometries are closely examined.
The computed flowfield over a pair of doublet SVGs in series configuration shows that a longitudinal vortex generated at the first doublet SVG is merged with another longitudinal vortex from the second one to strengthen the overall longitudinal vortex in the downstream region. It is also shown that the vortex core of the merged vortex lifts up from the wall region when it leaves from the trailing edge of the second SVG for escaping from the highly dissipative region close to the wall surface.
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