... counterpart of the control implemented on the tip-leakage vortex (Fig. 2 ) and shed vorticity. In order to give hints on the directivity of noise spectra, Fig. 7 shows the L p autospectra mapped in the frequency range 50 Hz–1 kHz changing the azimuthal...

... complex with interactions of vortices shed from various locations along the chord of the airfoil. At a low angle of attack and a low Strouhal number, increasing reduced frequency results in a decrease and an increase in the mean sectional lift and drag coefficients, respectively. Also, at a low angle...

... drag shapes (structures) vibrations vortices Flow-induced vibration (FIV), vortex-induced vibration (VIV), and wind-induced oscillation (WIO) refer to a fluid-structure interaction problem, in which a body undergoes unsteady motion when it is subject to a fluid flow. This phenomenon can...

...) vortices jets Navier-Stokes equations force Labyrinth seals are widely used in turbomachinery to minimize secondary leakage inside turbomachinery, including gas turbines and compressors. Accurate leakage prediction is vital for reliable performance prediction. The large gas pressure of high...