1–19 von 19 Ergebnissen
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    CFD ANALYSIS OF ACOUSTIC DAMPING ON HELMHOLTZ RESONATORS INSIDE ROCKETS COMBUSTION CHAMBERS

    Betancourt, César Augusto Páez / Flores, Alejandra Michelle Penaloza | TIBKAT | 2021

    An experimental evaluation of Helmholtz potentials as a source of acoustic emission due to fatigue crack

    Faisal Haider, Mohammad / Joseph, Roshan / Giurgiutiu, Victor | British Library Conference Proceedings | 2019

    Design and Application of a Helmholtz Cage for Testing Nano-satellites

    Poppenk, F.M. / Amini, R. / Brouwer, G. et al. | British Library Conference Proceedings | 2007

    Nonlinear Helmholtz equation resolution through the finite element method

    Cucinotta, A. / Selleri, S. / Vincetti, L. et al. | British Library Conference Proceedings | 1998

    Evaluation of Aeroacoustic Performance of a Helmholtz Resonator System with Different Resonator Cavity Shapes in the Presence of a Grazing Flow

    Dastourani, Hadi / Bahman-Jahromi, Iman | ASCE | 2021
    aeroacoustics performance of a Helmholtz resonator system. This scrutiny is performed for various Mach numbers of the grazing flow in the range of 0–0.4 ...

    Simulation of scattering and reflection problems via solution of the 2D Helmholtz equation

    Schmidt, F. / Optical Society of America | British Library Conference Proceedings | 1998

    Herstellung von Karosseriebauteilen aus Magnesiumblech

    Hillebrecht,M. / Kiel,B. / Letzig,D. et al. | Kraftfahrwesen | 2015

    Tabletop Testbed for Attitude Determination and Control of Nanosatellites

    Silva, Rodrigo Cardoso da / Guimarães, Fernando Cardoso / Loiola, João Victor Lopes de et al. | ASCE | 2018
    testbed is composed of an air-bearing table and a Helmholtz cage. The air-bearing table is a spacecraft simulator that can simulate frictionless ...

    METHOD FOR REDUCING THE SPEED OF PROPAGATION OF A CRACK IN A METAL SUBSTRATE

    Freier Zugriff
    GROTH ANNE / KASHAEV NIKOLAI / HUBER NORBERT | Europäisches Patentamt | 2016

    Numerical modelling of sound transmission loss of interior aircraft lining elements

    Von Estorff, Otto / Wandel, Martin | Tema Archiv | 2003
    Schlagwörter: Helmholtz-Gleichung

    Analyse und Reduzierung der Lärmemission von ummantelten Hubschrauber-Heckrotoren

    Recker, O. | Tema Archiv | 1999
    Lärms eignen sich besonders Helmholtz-Resonatoren. Diese bestehen aus einem Volumen, welches eine (Einzelresonatoren) oder mehrere Bohrungen ...
    Schlagwörter: Helmholtz-Resonator

    CAIRe : Abschlussbericht : Berichtszeitraum: 01.04.2012 bis 31.12.2015

    Freier Zugriff
    Holzhüter, Dirk / Wölper, Johannes / Kosmann, Jens et al. | TIBKAT | 2016
    Verlag: Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft , [Köln]

      CAIRe : Abschlussbericht : Berichtszeitraum: 01.04.2012 bis 31.12.2015

      Holzhüter, Dirk / Wölper, Johannes / Kosmann, Jens et al. | TIBKAT | 2016
      Verlag: Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft , [Köln]

    Schlussbericht SB: Smart Blades : 01.12.2012-30.04.2016

    Freier Zugriff
    Teßmer, Jan / Icpinar, Ceyda / Sevinc, Alper et al. | TIBKAT | 2016
    Verlag: Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft , [Braunschweig]

      Schlussbericht SB: Smart Blades : 01.12.2012-30.04.2016

      Teßmer, Jan / Icpinar, Ceyda / Sevinc, Alper et al. | TIBKAT | 2016
      Verlag: Deutsches Zentrum für Luft- und Raumfahrt e.V. in der Helmholtz-Gemeinschaft , [Braunschweig]

    Preliminary Study on Mixing Mechanism of Three-Dimensional Vortices in the Wake of Lobe-Type Rear Variable Area Bypass Injector

    Li, Chao / Huang, Guoping | ASCE | 2022
    Kelvin-Helmholtz (K-H) vortices. When the BR is raised to 0.36, the increasing SV-LP will gradually replace the low-disturbance K-H vortices in ...

    Schallabsorption ohne Schaum und Vlies? Problemlösung mit Formteilen aus kompaktem Polypropylen

    Müller-Broll, G. | Tema Archiv | 1993
    Schallabsorber nutzt die Prinzipien des Helmholtz- und Plattenresonators um Luftschall wirkungsvoll zu dämpfen. Die erforderliche Absorberbestückung wird ...

    Experimental and Numerical Investigations of Modified Synthetic Jet Actuator for Active Flow Control

    Kurowski, Marcin / Szwaba, Ryszard | ASCE | 2022
    which the output jet velocity reaches a maximal value, namely, the resonant frequency of the actuator (Helmholtz frequency) and of the membrane ...

    Sound transmission loss of double-panel partitions with internal microperforated panel absorbers

    Thomas, Christian / Weltin, Uwe / Petersen, Sven | Tema Archiv | 2003
    -mass frequency of the partition. Instead of Helmholtz resonators the use of microperforated panel absorbers (MPAs) is theoretically and ...

    Aerodynamic Performance of Morphing and Periodic Trailing-Edge Morphing Airfoils in Ground Effect

    Clements, Dominic / Djidjeli, Kamal | ASCE | 2023
    increased the efficiency by 5.4%; however, it reduced the lift by 0.7%, the drag reduced by 5.8%, and it showed Kelvin–Helmholtz instability at 9.8 ...