한양대학교 · Engineering
윤준용 교수의 연구실은 유체역학과 응용유체역학을 기반으로 하며, 특히 모래입자 거칠기와 빙상 표면 등 다양한 거칠기 조건에서의 흐름 구조를 수치모델링하고 실험적으로 분석하는 데 중점을 두고 있습니다. 고정된 모래언덕 형상의 채널 내 흐름, 수중 빙상의 영향, 그리고 하이드로다이내믹 캐비테이션을 이용한 슬러지 처리 기술 등 다양한 응용 분야에서의 유동 제어 및 성능 향상에 기여하고 있습니다. 특히, 레이놀즈 평균 나비에-스토크스 방정식과 k-ω 난류 모델을 기반으로 한 정밀한 수치 해석 기법을 개발하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
A two-dimensional numerical model, based on solution of the Reynolds-averaged Navier-Stokes equations and the k -ω turbulence model, which takes into account sand-grain roughness, is developed to describe the flow in a fixed dune-bed channel. The model predicts the velocity and turbulence fields, as well as the pressure and friction distributions along the dune. The details of the flow in the separation eddy are calculated. The model predictions are in general agreement with existing detailed ex
In the present work, the sludge treatment performance of a sludge treatment using a rotor-stator type hydrodynamic cavitation reactor (HCR) was investigated. To verify the performance, a comparison with an ultrasonic bath was conducted in four experimental cases using three assessment factors. The HCR consisted of a rotor and three covers with inserted dimples resulting in variation of the cross-sectional area in a flow. The experimental cases were established using the same energy consumption f
A two-dimensional numerical model for a dune-bed channel is extended to describe the flow structure in a channel with a bed of prescribed geometry and roughness, and a free-floating ice cover of known roughness. The model involves solution of the Reynolds-averaged Navier-Stokes equations with the k -ω turbulence model, which accounts for wall roughness. It is validated against recent experiments in channels with simulated ice covers of varying roughness, and is applied to estimate the effect of
