EFFICIENT FLUIDIZED GROUND ANALYSIS USING <i>μ</i>(<i>I</i>) RHEOLOGY　WITH IMPLICIT SPH METHOD

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  • <i>μ</i>(<i>I</i>) レオロジーを用いた流動化地盤解析の陰的 SPH 法による効率化

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<p>For simulating the fluidized ground during landslides, a new ISPH using the fully implicit time integration has been developed to decrease total simulation costs for highly viscous fluid simulation in non-Newtonian fluids. With the help of the proposed fully implicit ISPH, μ(I) rheology model, which is one of the reliable non-Newtonian fluids for dense granular materials, can be implemented with lower numerical costs than the semi-implicit ISPH keeping the same accuracy. The fully implicit ISPH method was implemented on a GPU computer to speed up their heavy computations and achieve stable and fast analysis by combining hardware speed-up and software improvement. Finally, comparing numerical and experimental results for sand flow supports the usefulness of the μ(I) rheology model and fully implicit ISPH method for granular flow.</p>

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