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Numerical Simulations in Room Acoustics Using Direct Coupling Techniques and Finite Elements - Softcover
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This thesis presents a coupling approach for time-harmonic problems in linear room acoustics. Therein the closed acoustic system is subdivided into air, sound source and different boundary components. The sound field of each air component is approximated with the help of modal basis functions and continuous transitions between single components are enabled by enforcing coupling conditions. Coupling to realistic boundary conditions is realized by wavenumber- and frequency-dependent impedance functions for plate-like sound absorbers. Afterwards the solution is computed by minimizing the energy based on Hamilton's Principle. For computing the basis functions and the energies of the components the Spectral Finite Element Method and the adapted Patch Recovery Method are applied. Finally numerical benchmark-simulations show the applications of this coupling approach.
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Numerical Simulations in Room Acoustics using direct Coupling Techniques and Finite Elements
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ISBN 13: 9783832531393
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Numerical Simulations in Room Acoustics Using Direct Coupling Techniques and Finite Elements
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Numerical Simulations in Room Acoustics Using Direct Coupling Techniques and Finite Elements (Paperback)
Published by
Logos Verlag Berlin GmbH, Berlin, 2012
ISBN 10: 3832531394
ISBN 13: 9783832531393
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Paperback. Condition: new. Paperback. ?Numerical Simulations of Room Acoustics using direct Coupling Techniques and Finite Elements" : This thesis presents a coupling approach for time-harmonic problems in linear room acoustics. Therein the closed acoustic system is subdivided into air, sound source and different boundary components. The sound field of each air component is approximated with the help of modal basis functions and continuous transitions between single components are enabled by enforcing coupling conditions. Coupling to realistic boundary conditions is realized by wavenumber- and frequency-dependent impedance functions for plate-like sound absorbers. Afterwards the solution is computed by minimizing the energy based on Hamilton?s Principle. For computing the basis functions and the energies of the components the Spectral Finite Element Method and the adapted Patch Recovery Method are applied. Finally numerical benchmark-simulations show the applications of this coupling approach. ?Numerische Simulation raumakustischer Fragestellungen unter Verwendung eines direkten Kopplungsansatzes und Finiter Elemente?:Diese Dissertation befasst sich mit einem Kopplungsansatz fur zeitharmonische Probleme der linearen Raumakustik. Das geschlossene akustische System wird in die einzelnen Komponenten Luftvolumen, Rander und Schallquellen untergliedert, deren Schallfeld jeweils mit Hilfe von modalen Basisfunktionen beschrieben wird. Stetige Ubergange zwischen einzelnen Komponenten werden durch Kopplungsbedingungen erzwungen. Die Kopplung zu realistischen Randbedingungen wird durch wellenzahl- und frequenz-abhangige Impedanzfunktionen fur plattenformige Schallabsorber realisiert. Anschliessend wird die Losung mittels Energieminimierung basierend auf dem Hamiltonschen Prinzip berechnet. Zur Berechnung der Basisfunktionen und der Energien der einzelnen Komponenten werden die Spectral Finite Element Method und eine adaptierte Patch Recovery Methode verwendet. Abschliessend wird die Anwendung des Kopplungsansatzes mittels numerischer Benchmark-Simulationen prasentiert. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. Seller Inventory # 9783832531393
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Numerical Simulations in Room Acoustics Using Direct Coupling Techniques and Finite Elements (Paperback)
Published by
Logos Verlag Berlin GmbH, Berlin, 2012
ISBN 10: 3832531394
ISBN 13: 9783832531393
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Paperback. Condition: new. Paperback. ?Numerical Simulations of Room Acoustics using direct Coupling Techniques and Finite Elements" : This thesis presents a coupling approach for time-harmonic problems in linear room acoustics. Therein the closed acoustic system is subdivided into air, sound source and different boundary components. The sound field of each air component is approximated with the help of modal basis functions and continuous transitions between single components are enabled by enforcing coupling conditions. Coupling to realistic boundary conditions is realized by wavenumber- and frequency-dependent impedance functions for plate-like sound absorbers. Afterwards the solution is computed by minimizing the energy based on Hamilton?s Principle. For computing the basis functions and the energies of the components the Spectral Finite Element Method and the adapted Patch Recovery Method are applied. Finally numerical benchmark-simulations show the applications of this coupling approach. ?Numerische Simulation raumakustischer Fragestellungen unter Verwendung eines direkten Kopplungsansatzes und Finiter Elemente?:Diese Dissertation befasst sich mit einem Kopplungsansatz fur zeitharmonische Probleme der linearen Raumakustik. Das geschlossene akustische System wird in die einzelnen Komponenten Luftvolumen, Rander und Schallquellen untergliedert, deren Schallfeld jeweils mit Hilfe von modalen Basisfunktionen beschrieben wird. Stetige Ubergange zwischen einzelnen Komponenten werden durch Kopplungsbedingungen erzwungen. Die Kopplung zu realistischen Randbedingungen wird durch wellenzahl- und frequenz-abhangige Impedanzfunktionen fur plattenformige Schallabsorber realisiert. Anschliessend wird die Losung mittels Energieminimierung basierend auf dem Hamiltonschen Prinzip berechnet. Zur Berechnung der Basisfunktionen und der Energien der einzelnen Komponenten werden die Spectral Finite Element Method und eine adaptierte Patch Recovery Methode verwendet. Abschliessend wird die Anwendung des Kopplungsansatzes mittels numerischer Benchmark-Simulationen prasentiert. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability. Seller Inventory # 9783832531393
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