The stability of ventilated supercavitation is strongly influenced by gas leakage characteristics the cavity. In this study we conduct a systematic investigation such under different closure conditions including re-entrant jet (RJ), quad vortex (QV), twin (TV), and pulsating (PTV), generated from tunnel speeds ventilation conditions. Using high speed digital inline holography (DIH), all individ...

Abstract To investigate the cavitation and hydrodynamic characteristics of supercavitating projectiles in shear flow, Mixture multiphase Schnerr-Sauer models are employed to simulate underwater projectiles. The inflow average velocity is 600 m/s, rates range from 0 7500 s −1 . In uniform supercavity enveloping vertically symmetrical. drag dominated by pressure drag, lift coefficient 0. However,...

Optical supercavity modes (superstates), i.e., hybrid emerging from the strong coupling of two an open cavity, can support ultranarrow lines in their scattering spectra associated with quasi bound states continuum (quasi-BIC). These are great interest for sensing applications as they enable compact systems unprecedented sensitivity. However, classical quasi-BIC sensors fundamentally limited by ...

The understanding of the internal gaseous flow artificially ventilated supercavities is developed using a locally homogenous, multiphase computational fluid dynamics model that benchmarked experimental data. solutions indicate gas leakage from supercavity originates shear layers forming at gas-water interface. Not only do these observations corroborate previous theory for cavities with toroidal...

in this work, we report synthesis of silver nanoplates by a simple reduction process of silver nitrate in the presence of polyvinyl alcohol (pva) and n,n'-dimethyl formamide (dmf). the characterization of the samples were carried out using x-ray diffraction (xrd), transmission-electron microscopy (tem) and uv-vis spectroscopy. absorption spectra of the nanoplates in comparison with that of...