Vortex Breakdown
FERGUL - Fluids Engineering Research Group at the University of Liverpool.
The video shows the development of vortex breakdown in a swirling pipe flow. The experiment consists of two smoothly joined pipe sections that can be rotated independently about the same axis. In this clip, the pipe on the left hand side of the video is rotating whilst the pipe on the right hand side remains stationary. The flowrate through the pipe remains fixed (giving a Reynolds number of 25 based on the average velocity and pipe diameter) whilst the rotational speed of the left pipe is slowly increased. Once the swirl imparted to the flow goes above a critical value then flow reversal - so-called "vortex breakdown" occurs. For full details see
D. J. C. Dennis, C. Seraudie and R. J. Poole "Controlling vortex breakdown in swirling pipe flows: Experiments and simulations". Phys. Fluids 26, 053602 (2014)
http://dx.doi.org/10.1063/1.4875486
Видео Vortex Breakdown канала FERGUL
The video shows the development of vortex breakdown in a swirling pipe flow. The experiment consists of two smoothly joined pipe sections that can be rotated independently about the same axis. In this clip, the pipe on the left hand side of the video is rotating whilst the pipe on the right hand side remains stationary. The flowrate through the pipe remains fixed (giving a Reynolds number of 25 based on the average velocity and pipe diameter) whilst the rotational speed of the left pipe is slowly increased. Once the swirl imparted to the flow goes above a critical value then flow reversal - so-called "vortex breakdown" occurs. For full details see
D. J. C. Dennis, C. Seraudie and R. J. Poole "Controlling vortex breakdown in swirling pipe flows: Experiments and simulations". Phys. Fluids 26, 053602 (2014)
http://dx.doi.org/10.1063/1.4875486
Видео Vortex Breakdown канала FERGUL
Показать
Комментарии отсутствуют
Информация о видео
Другие видео канала
Evolution and Breakdown of Elliptic Vortex RingTwo Vortex Rings Colliding in SLOW MOTION - Smarter Every Day 195Rotational & irrotational flowsAero myths busted!Ring VortexStunning Flow Visualizatoin LabPoint Vortex DynamicsVortex Technologies Accretion Disk DemonstrationHow to Make a Simple Air CannonNew open-air tornado simulator - single-cell vortex to two-cell vortex transitionEuler solution, NACA0012, Mach = 2.0, AoA = 0Euler solution, NACA0012, Mach = 0.4, AoA = 8Tornado Machine Test 06 - Vortex breakdown and helix tornadoesUnderstanding Aerodynamic DragUnsteady laminar separation bubble (#2)Simulations of vortex breakdown in swirling flows using Incompact3dKarman Vortex street behind 2D (Vorticity) Re=1.0E+3 90゜Karman vortex street past a cylinderKarman Vortex street behind 2D (Vorticity) Re=1.0E+3 0024 15゜Tip vortex simulation