세미나 및 이벤트
Experiments on Separated Flow, Its Control and Bluff-Body Wake
세미나 날짜
2006-04-19
작성자
임아주
작성일
2006-04-12
조회
1600
1. 제 목 : Experiments on Separated Flow, Its Control and Bluff-Body Wake
2. 연 사 : Professor Hiroshi Higuchi
Department of Mechanical and Aerospace Engineering
Syracuse University, Syracuse, NY.
3. 일 시 : 2006년 4월 19일 (수) 오후 5시 - 6시
4. 장 소 : 301동 1512호 세미나실
5. 내 용 : Controls of the flow separation over the airfoil and the wake behind axisymmetric/3D bluff-body are presented. The passive controls include base-bleed, edge-induced longitudinal vortices behind polygonal plates, and surface protrusion. The disk wake was further actively controlled in air using actuated tabs and in water using net-zero mass actuators along the edge. The active control suppressed the helical mode of oscillation, but enhanced the closing of the reverse flow region with reduced base pressure. Unsteady velocity vector fields from the time-resolved PIV are presented and issues related to future feedback flow control for the bluff-body wake will be addressed. Results from the feedback control of the airfoil flow separation and a unique experiment with the magnetically suspended model will be introduced. Some applied examples in the talk include sports aerodynamics and biofluid dynamics related to indoor environment.
6. 문 의 : 기계항공공학부 최 해 천 교수 (☏ 880-8361)
2. 연 사 : Professor Hiroshi Higuchi
Department of Mechanical and Aerospace Engineering
Syracuse University, Syracuse, NY.
3. 일 시 : 2006년 4월 19일 (수) 오후 5시 - 6시
4. 장 소 : 301동 1512호 세미나실
5. 내 용 : Controls of the flow separation over the airfoil and the wake behind axisymmetric/3D bluff-body are presented. The passive controls include base-bleed, edge-induced longitudinal vortices behind polygonal plates, and surface protrusion. The disk wake was further actively controlled in air using actuated tabs and in water using net-zero mass actuators along the edge. The active control suppressed the helical mode of oscillation, but enhanced the closing of the reverse flow region with reduced base pressure. Unsteady velocity vector fields from the time-resolved PIV are presented and issues related to future feedback flow control for the bluff-body wake will be addressed. Results from the feedback control of the airfoil flow separation and a unique experiment with the magnetically suspended model will be introduced. Some applied examples in the talk include sports aerodynamics and biofluid dynamics related to indoor environment.
6. 문 의 : 기계항공공학부 최 해 천 교수 (☏ 880-8361)
