The University of Osaka · 공학
Takuya Tsuji 교수의 연구실은 다상유동, 특히 기체-입자 혼합 유동과 입자 기반 유체역학을 중심으로 연구를 진행하고 있습니다. 유한요소법 기반 수치모델링과 이산요소법(DDEM)을 활용해 입자 상호작용, 유동장 내 입자 거동, 그리고 열대류 현상에 대한 정밀한 시뮬레이션을 수행하며, 공정 설계 및 산업적 응용에 기여하고자 합니다. 특히 유동장 내 입자 군집의 거동과 비정상적 힘의 진동 현상, 경계층 내 난류의 구조적 특성에 대한 분석이 핵심 연구 주제입니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Large solids coexist with small solids in a number of dense gas‐solid flow applications such as fluidized beds and pneumatic conveyers. A new numerical model that is based on the discrete element method–computational fluid dynamics mesoscopic model and extended by introducing an idea appearing in volume penalization method is presented. In computational cells including large and small solids, the amount of momentum exchange between the fluid and the solids is estimated by assuming that a large s
The interaction between dry granular materials and an inclined plate is numerically studied using a three-dimensional discrete element method (DEM) simulation. In the simulation, a plate is dragged horizontally through densely packed dry granular materials. To examine the effect of the rake angle α of the plate on the drag force acting on the plate, three cases with α = 50°, 70°, and 90° are compared (α = 90° for a vertical plate). The results show that for all cases, the force oscillates as the
The spatio-temporal structures of a turbulent natural convection boundary layer along a vertical flat plate in air have been examined using a thermocouple rake and a pair of hot-wire/cold-wire arrangements. The instantaneous temperature profile clearly indicates the evolution of a large-scale motion originating in the outer region of the boundary layer. However, the space-time correlation measurements did not suggest the existence of any quasi-coherent structures such as low-speed streaks and bu
