1–20 von 79 Ergebnissen
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    Analysis for vehicle interior noise using helmholtz resonator

    Kozukue, Wakae / Hagiwara, Ichiro / Mohri, Yasuhiro | Tema Archiv | 2005
    carry out by using the finite element method. For the reduction method a Helmholtz resonator, which is well known in the field of acoustics, is ...

    Kelvin-Helmholtz wave generation beneath hovercraft skirts

    Sullivan, P.A. / Walsh, C. / Hinchey, M.J. | Tema Archiv | 1993
    selbsangeregten Schwingungen resultieren. Unter Anwendung der klassischen Kelvin-Helmholtz-Theorie untersuchen die Verfasser die dynamischen Erscheinungen ...

    Numerical simulation of Kelvin-Helmholtz instability via direct- and large-eddy simulation

    Lund, T.S. / Werne, J.A. | Tema Archiv | 2004
    Kelvin-Helmholtz (K-H) instability in a stably stratified background is studied numerically in order to support the AirBorne Laser (ABL ...
    Schlagwörter: Kelvin-Helmholtz-Instabilität

    Investigation of Kelvin-Helmholtz induced separation bubble flapping via time-resolved and scanning PIV measurements

    Burgmann, S. / Schröder, W. | Tema Archiv | 2007
    layer to reattach is governed by Kelvin-Helmholtz instabilities. Large scale vortices are formed due to this mechanism at the downstream end of ...
    Schlagwörter: Helmholtz-Gleichung , Kelvin-Helmholtz-Instabilität

    Visualization of vehicle interior sound field using Nearfield Acoustical Holography based on the Helmholtz-Equation Least-Squares (HELS) method

    Moondra, Manmohan S. / Wu, Sean F. | Tema Archiv | 2005
    This paper examines the application of Nearfield Acoustical Holography based on the Helmholtz Equation Least-Squares (HELS) method for ...
    Schlagwörter: Helmholtz-Gleichung

    Methods to control low frequency pulsation in open-jet wind tunnel

    Wang, Yigng / Yang, Zhigng / Li, Qilang | Tema Archiv | 2012
    tunnel. On the basis of the method, two new control methods that are based on a Helmholtz resonator and addition pipes connected with airline of ...
    Schlagwörter: Helmholtz-Gleichung , Helmholtz-Resonator

    Noise reductions for low speed diesel engines and application of noise measurement using spherical beamforming technique

    Kajihara, Shuhei / Takashima, Kazuhiro / Hoejgaard, Jens et al. | Tema Archiv | 2010
    in the engine room. Secondly, we report some samples of the countermeasures for noise reduction including the application of Helmholtz ...
    Schlagwörter: Helmholtz-Gleichung , Helmholtz-Resonator

    Modeling of electron-electron collisions for particle-in-cell simulations

    D'Andrea, D. / Munz, C.D. / Schneider, R. | Tema Archiv | 2006

    Nationale Innovationsstrategien für neue Techniken und Dienste zur Erreichung einer "nachhaltigen Entwicklung" im Verkehr

    Halbritter, Günter / Fleischer, Torsten / Kupsch, Christel et al. | Tema Archiv | 2005
    Entwicklung im Verkehr wurde vom Institut für Technikfolgenabschätzung und Systemanalyse des Forschungszentrums Karlsruhe in der Helmholtz ...

    Analysis of transaxle noise using HELS-based near-field acoustic holography

    Moondra, Manmohan / Beniwal, Ravi / Wu, Sean | Tema Archiv | 2006
    This paper describes the analyses of automobile transaxle noise under both stationary and non-stationary conditions using the Helmholtz ...
    Schlagwörter: Helmholtz-Gleichung

    A Comparison Between PSRK and GERG-2004 Equation of State for Simulation of Non-Isothermal Compressible Natural Gases Mixed with Hydrogen in Pipelines

    Uilhoorn, Frits E. | Tema Archiv | 2013
    In this work, the GERG-2004 equation of state based on a multi-fluid approximation explicit in the reduced Helmholtz energy is compared ...
    Schlagwörter: Helmholtz-Energie

    The effect of underwater noise radiation on ship vibration

    Wilken, Marc / Maess, Matthias / Junge, Michael et al. | Tema Archiv | 2007
    been developed to solve the Helmholtz equation, which allows the computation of the sound pressure field in the water due to a structural ...
    Schlagwörter: Helmholtz-Gleichung

    Dynamics of low-viscosity oils retained by rigid and flexible barriers

    Amini, Azin / Bollaert, Erik / Boillat, Jean-Louis et al. | Tema Archiv | 2008
    Schlagwörter: Kelvin-Helmholtz-Instabilität

    Entschärfung des Zielkonfliktes zwischen wirksamer Schalldämpfung und niedrigem Abgasgegendruck

    Diez, R. / Herbig, M. / Münzing, S. | Tema Archiv | 2000
    : 2001), das einen Helmholtz-Resonator mit einer Abgasklappe kombiniert. Im Kern besteht das System aus zwei parallelen Schalldämpfern, die ...
    Schlagwörter: Helmholtz-Gleichung

    Experimental investigation of some aspects of insect-like flapping flight aerodynamics for application to micro air vehicles

    Ansari, Salman A. / Phillipps, Nathan / Stabler, Graham et al. | Tema Archiv | 2009
    numbers is studied and the presence of Kelvin-Helmholtz instability observed at the higher Reynolds number in computational fluid dynamics ...
    Schlagwörter: Helmholtz-Gleichung

    Increase in transmission loss of single panels by addition of mass inclusions to a poro-elastic layer: experimental investigation

    Kidner, M.R.F. / Fuller, C.R. / Gardner, B. | Tema Archiv | 2006
    Schlagwörter: Helmholtz-Gleichung

    O primenenii resonatora Gelmgolca dlja snizenija suma gisravliceskich sistem sudovych eu

    Vnukov, A.M. | Tema Archiv | 1992
    Schlagwörter: Helmholtz-Resonator

    Influence of ballast on wave steepening in tunnels

    Vardy, A.E. / Brown, J.M.B. | Tema Archiv | 2000
    ballast is linked to a series of Helmholtz resonators, yielding analytical relationships whose characteristics are explored. Then the resonators ...
    Schlagwörter: Helmholtz-Resonator

    Vibro-acoustic simulations of ships by coupled fast BE-FE approaches

    Brunner, Dominik / Junge, Michael / Wilken, Marc et al. | Tema Archiv | 2009
    comparing the solutions of the Helmholtz and the Laplace equation. The ship itself is modeled with the finite element method. A binary interface to ...
    Schlagwörter: Helmholtz-Gleichung

    Structural-acoustic mode synthesis for vehicle interior using finite-boundary elements with residual flexibility

    Thomas, B. / Gu, R.J. | Tema Archiv | 2000
    Schlagwörter: Helmholtz-Gleichung