한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
- /
- Pages.676-679
- /
- 2008
수압작용에 따른 지반내 공동생성 및 수리거동에 대한 개별요소해석
Distinct element simulation of cavity development and fluid behavior caused by fluid injection
-
Jeon, Je-Sung
(Korea Water Resources Corporation, KIWE) ;
-
Kim, Ki-Young
(Korea Water Resources Corporation, KIWE) ;
- Kim, Jae-Hong (Korea Water Resources Corporation, KIWE) ;
-
Lee, Jong-Wook
(Korea Water Resources Corporation, KIWE)
- 발행 : 2008.03.28
초록
Numerical simulations of fluid injection into particulate materials were conducted to observe cavity initiation and propagation using distinct element method. After generation of initial particles and wall elements, confining stress was applied by servo-control method. The fluid scheme solves the continuity and Navior-Stokes equations numerically, then derives pressure and velocity vectors for fixed grid by considering the existence of particles within the fluid cell. Fluid was injected as 7-step into the assembly in the x-direction from the inlet located at the center of the left boundary under confining stress condition, 0.1MPa and 0.5MPa, respectively. For each simulation, movement of particles, flow rate, fluid velocity, pressure history, wall stress including cavity initiation and propagation by interaction of flulid-paricles were analyzed.