Near Field of a Vortex Generated by Chevron-Tipped Flat Plates
نویسندگان
چکیده
Flat plates with chevron tips of variable depths (2h) were designed and their effect on the tip vortex was studied at downstream distances x=0.5c to 3c a Reynolds number 67,000. The test p...
منابع مشابه
Analytical Formulae for Radar Cross Section of Flat Plates in near Field and Normal Incidence
Radar Cross Section is most of the time defined in far field. In that case, RCS is totally independent of the range between the radar and the target. However, in several kinds of military scenario, it can be more realistic to deal with the target nearfield scattering characteristics. Using a relation to define near-field RCS, this communication proposes simple and approximated analytical formul...
متن کاملPolarization pattern of vector vortex beams generated by q-plates with different topological charges.
We describe the polarization topology of the vector beams emerging from a patterned birefringent liquid crystal plate with a topological charge q at its center (q-plate). The polarization topological structures for different q-plates and different input polarization states have been studied experimentally by measuring the Stokes parameters point-by-point in the beam transverse plane. Furthermor...
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 کاملVortex dynamics of clapping plates
Vortex formation and force generation of clapping plates with various aspect ratios (AR) and stroke angles were investigated. Experiments were performed with a pair of hinged rectangular plates that were rotated symmetrically in a static fluid, and defocusing digital particle image velocimetry was employed to measure the threedimensional flow field. Single-plate cases were also studied to compa...
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: AIAA Journal
سال: 2021
ISSN: ['0001-1452', '1533-385X', '1081-0102']
DOI: https://doi.org/10.2514/1.j059589