第１部門④

[21006-11-03] Reproducibility of Vertical One-Dimensional Unsaturated Permeability in the Tank Model (Proceedings of Symposium on Applied Mechanics)

*Satoshi Nakamura¹, Kazuaki Hioki² (1. Syouwa Engineering, 2. Osaka Institute of Technology)

Keywords:Tank Model, Genetic Algorithm, Optimization

In this study, various tank model constants were optimized using Powell’s conjugate direction (Powell) method and a random search method using a genetic algorithm (GA) method. Herein, two tank models, Sugawara model wherein the permeability from top to bottom is constant, and Aoki-Hioki model, wherein the variation in the storage height causes changes in permeability, were used and the reproducibility of vertical one-dimensional unsaturated permeability characteristics were evaluated. From the results, it was revealed that tank model constants with a higher level of reproducibility were achieved with the GA method than the Powell method, and more accurate vertical one-dimensional unsaturated permeability characteristics were reproduced with Aoki-Hioki model than with Sugawara model.