| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
This study proposed a new calculation method, GBVC4-DWL, which was developed by coupling General Bottom Velocity Computation (GBVC) method with Dynamic Wall Law to calculate three dimensional flow structures and complex bottom velocity fields in open channel flows in the frame work of two dimensional computation method. The dynamic wall law allows us to calculate bottom velocity dynamically based on continuity and momentum equations for bottom thin layers of vortex and roughness layers without assuming equilibrium flow condition, such as log law velocity distribution, for the bottom boundary condition for the computation of three dimensional flows. The method has been validated though the comparison with experimental data not only for three dimensional flow structures with multi-scale toughness, but also for bed variation analysis.
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