Results 81 to 90 of about 26,103 (305)

Continuous Reynolds number effect analysis of the influence of vortex generator on the aerodynamic performance of airfoil [PDF]

Journal of Hebei University of Science and Technology
In order to effectively improve the power generation efficiency of large wind turbines, studies on the optimization measures for the aerodynamic performance of wind turbine airfoils were conducted. Wind tunnel experiments were conducted to systematically
Yaya JIA, Jiacheng ZHAO, Wanpeng CAO, Qingkuan LIU, Shanning LYU   +4 more
doaj   +1 more source

Integrated multi vector vortex beam generator

Optics Express, 2013
A novel method to generate and manipulate vector vortex beams in an integrated, ring resonator based geometry is proposed. We show numerically that a ring resonator, with an appropriate grating, addressed by a vertically displaced access waveguide emits a complex optical field.
Schulz, Sebastian A., Machula, Taras, Karimi, Ebrahim, Boyd, Robert W.   +3 more
openaire   +3 more sources

Application of a computational model for vortex generators in subsonic internal flows [PDF]

A model for the analysis of vortex generators in a fully viscous subsonic internal flow is evaluated. A vorticity source term is used in a modified form of the Parabolized Navier-Stokes equations to model the shed vortex.
Kunik, W. G.
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

A study on vortex flow control on inlet distortion in the re-engined 727-100 center inlet duct using computational fluid dynamics [PDF]

Computational fluid dynamics was used to investigate the management of inlet distortion by the introduction of discrete vorticity sources at selected locations in the inlet for the purpose of controlling secondary flow.
Anderson, Bernhard H., Cavatorta, Enrico, Huang, Pao S., Paschal, William A.   +3 more
core   +1 more source

Evaluation of the Performance of Vortex Generators on the DU 91-W2-250 Profile using Stereoscopic PIV [PDF]

, 2008
Stereoscopic PIV measurements investigating the effect of Vortex Generators on the lift force near stall and on glide ratio at best aerodynamic performance have been carried out in the LM Glasfiber wind tunnel on a DU 91-W2-250 profile.
Fuglsang, Peter, Hansen, Martin Otto Laver, Meyer, Knud Erik, Velte, Clara Marika   +3 more
core   +2 more sources

On the curvature of vortex moduli spaces [PDF]

, 2013
We use algebraic topology to investigate local curvature properties of the moduli spaces of gauged vortices on a closed Riemann surface. After computing the homotopy type of the universal cover of the moduli spaces (which are symmetric powers of the ...
A Bertram, A Bertram, A Hatcher, A Jaffe, A Mattuck, A Sen, B Collie, DMA Stuart, E Arbarello, F Fang, G Segal, I Biswas, I Biswas, I Biswas, I Biswas, I Biswas, I Biswas, I Moss, IAB Strachan, IG Macdonald, JM Baptista, K Cieliebak, LA Takhtajan, M Itoh, Marcel Bökstedt, MG Eastwood, N Manton, N Mok, NJ Hitchin, NJ Hitchin, NM Romão, NM Romão, NS Manton, NS Manton, NS Manton, NS Manton, Nuno M. Romão, O García-Prada, O García-Prada, P Griffiths, S MacLane, S Sethi, SB Bradlow, SB Bradlow, SI Gel’fand, SI Goldberg, SK Donaldson, TM Samols, W Fulton, W Lück   +49 more
core   +2 more sources

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

Comparative study of different vortex generator designs in corrugated channel for turbulent heat transfer enhancement

Results in Physics
In this study, we numerically investigated the enhancement of heat transfer and pressure drop characteristics using vortex generators (VGs) inside a corrugated channel.
Aimen Tanougast, Rachid Bessaih, Krisztián Hriczó   +2 more
doaj   +1 more source

Experimental study of wing leading-edge devices for improved maneuver performance of a supercritical maneuvering fighter configuration [PDF]

Wind tunnel tests were conducted to examine the use of wing leading-edge devices for improved subsonic and transonic maneuver performance. These devices were tested on a fighter configuration which utilized supercritical-wing technology.
Campbell, R. L., Fox, C. H., Jr., Huffman, J. K., Mann, M. J.   +3 more
core   +1 more source