1–10 von 11 Ergebnissen
|

    Aeroacoustic Attenuation Performance of a Helmholtz Resonator with a Rigid Baffle Implemented in the Presence of a Grazing Flow

    Freier Zugriff
    Di Guan / Dan Zhao / Zhaoxin Ren | DOAJ | 2020
    To broaden its’ effective frequency range and to improve its transmission loss performance, a modified design of a Helmholtz resonator is ...

    Modeling of the Two-Dimensional Flow Caused by Sea Conditions and Wind Stresses on the Example of Dead Vistula

    Freier Zugriff
    Zima Piotr | DOAJ | 2018
    -dimensional flow in the form of the bi-harmonic Helmholtz equation for the current function has been adopted, taking into account additional impacts ...
    Schlagwörter: bi-harmonic helmholtz equation

    Influence of the geometry fidelity of resonant sound-absorbing liner samples on their acoustic characteristics

    Freier Zugriff
    O. Yu. Kustov / I. V. Khramtsov / R. V. Bulbovich | DOAJ | 2019
    Samples of sound-absorbing Helmholtz resonator-type liners of circular shape were manufactured from two types of ABS plastic and nylon on ...
    Schlagwörter: Helmholtz resonator

    Design and implementation of hardware-in-the-loop (HIL) test-bed for spacecraft attitude control

    Freier Zugriff
    Vahid Bohlouri / Hosein Haghighi / Samane Kaviri et al. | DOAJ | 2019
    respect to the practical consideration. This test-bed includes an air bearing 3-DOF table, Helmholtz coil, sun simulator, orbit simulator ...
    Schlagwörter: helmholtz coil

    Phase-Field-Based LBM Analysis of KHI and RTI in Wide Ranges of Density Ratio, Viscosity Ratio, and Reynolds Number

    Freier Zugriff
    Xun Zhou / Bo Dong / Weizhong Li | DOAJ | 2020
    Numerous studies have elaborated the dominated roles of Kelvin-Helmholtz instability (KHI) and Rayleigh-Taylor instability (RTI) in the ...

    Investigation of acoustic field near to elastic thin plate using integral method

    Freier Zugriff
    В.І. Токарев / О.І. Запорожець | DOAJ | 2004
    propagation, radiation and transmission through thin elastic plate is investigated. Necessary for that numerical model was found using the Helmholtz ...

    Parametric investigation of acoustic radiation by a beam under load and actuator forces

    Freier Zugriff
    Alexander Zaporozhets / Vadim Tokarev / Werner Hufenbach et al. | DOAJ | 2005
    radiation. The solution of the task is defined by solving of Helmholtz equation and inhomogeneous differential equation for beam bending vibration ...

    Numerical Investigation of Droplet Properties of a Liquid Jet in Supersonic Crossflow

    Freier Zugriff
    Yu-Qi Wang / Feng Xiao / Sen Lin et al. | DOAJ | 2021
    -Lagrangian scheme. The droplet stripping process was calculated by the KH (Kelvin-Helmholtz) breakup model, and the secondary breakup due to the ...

    Investigations On Water Circulation in Animal Sea-Water Basins – On the Example of Seals′ Breeding Pools

    Freier Zugriff
    Zima Piotr | DOAJ | 2017
    measurements. For description of flow field in steady conditions a simplified model of 2D flow in the form of Helmholtz biharmonic equation of stream ...

    TO THE STUDY OF WAKE VORTEX BEHIND THE AIRBUS-380 CHARACTERISTICS AT TAKEOFF AND LANDING

    Freier Zugriff
    A. I. Zhelannikov | DOAJ | 2017
    landing regimes it is - six-or eight-vortex system. A mathematical model of the far Wake vortex is based on the exact solution of the Helmholtz ...