Vortex patterns generated by a heaving flexible plate
نویسندگان
چکیده
منابع مشابه
Vortex patterns generated by a heaving flexible plate
We present dye visualizations of the wake behind a flexible plate flow when its leading edge is forced into harmonic heave motion. We show that, when the forcing amplitude is sufficiently large, a reverse Bénard-von Kármán vortex street is formed in the wake, indicative of the production of positive thrust.
متن کاملDirect Femtosecond Laser Surface Structuring with Optical Vortex Beams Generated by a q-plate
Creation of patterns and structures on surfaces at the micro- and nano-scale is a field of growing interest. Direct femtosecond laser surface structuring with a Gaussian-like beam intensity profile has already distinguished itself as a versatile method to fabricate surface structures on metals and semiconductors. Here we present an approach for direct femtosecond laser surface structuring based...
متن کاملMotor Learning on a Heaving Plate via Improved-SNR Algorithms
Creatures in nature have subtle and complicated interactions with their surrounding fluids, achieving levels of performance as yet unmatched by engineered solutions. Model-free reinforcement learning (MFRL) holds the promise of allowing man-made controllers to take advantage of the subtlety of fluid-body interactions solely using data gathered on the actual system to be controlled. In this thes...
متن کاملVortex flow generated by a magnetic stirrer
Gábor Halász, Balázs Gyüre, Imre M. Jánosi, K. Gábor Szabó, and Tamás Tél von Kármán Laboratory for Environmental Flows, Eötvös University, Pázmány P. s. 1/A, H-1117 Budapest, Hungary Department of Fluid Mechanics, Budapest University of Technology, H-1111, Bertalan L. u. 4–6, Budapest, Hungary and Previous address: HAS Research Group for Theoretical Physics, H-1518, P.O. Box 32, Budapest, Hung...
متن کاملKelvin-wave turbulence generated by vortex reconnections
Reconnections of quantum vortex filaments create sharp bends which degenerate into propagating Kelvin waves. These waves cascade their energy down-scale and their waveaction up-scale via weakly nonlinear interactions, and this is the main mechanism of turbulence at the scales less than the inter-vortex distance. In case of an idealised forcing concentrated around a single scale k0, the turbulen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Visualization
سال: 2014
ISSN: 1343-8875,1875-8975
DOI: 10.1007/s12650-014-0208-3