The non-negative intensity (NNI) method is applied to large-scale coupled fluid–structure interaction (FSI) problems using the fast multipole boundary element method (FMBEM). The NNI provides a field on the radiating structure surface that consists of positive-only contributions to the radiated sound power, thus avoiding the near-field cancellation effects that otherwise occur with the sound intensity field. Thus far the NNI has been implemented with the boundary element method (BEM) for relatively small problem sizes to allow for the full BEM coefficient and inverse matrices to be explicitly constructed and stored. In this work, the FMBEM is adapted to the NNI by calculating the eigenvalue solution of the symmetric acoustic impedance matrix using the FMBEM via a two-stage solution method. The FMBEM implementation of the NNI is demonstrated for a large-scale model of a submerged cylindrical shell. The coupled FSI problem is first solved using a finite element–FMBEM model and the resulting surface fields are then used in the FMBEM calculation of the NNI. An equivalent reactive NNI field representing the evanescent near-field radiation is demonstrated and the effect of the chosen number eigenvectors on the NNI field is investigated.
Skip Nav Destination
Article navigation
June 2017
June 09 2017
Non-negative intensity for coupled fluid–structure interaction problems using the fast multipole method
Daniel R. Wilkes;
Daniel R. Wilkes
Centre for Marine Science and Technology, Department of Imaging and Applied Physics, Curtin University
, GPO Box U1987, Perth, Western Australia 6845, Australia
Search for other works by this author on:
Herwig Peters;
Herwig Peters
a)
School of Mechanical and Manufacturing Engineering, The University of New South Wales
, Sydney, New South Wales 2052, Australia
Search for other works by this author on:
Paul Croaker;
Paul Croaker
School of Mechanical and Manufacturing Engineering, The University of New South Wales
, Sydney, New South Wales 2052, Australia
Search for other works by this author on:
Steffen Marburg;
Steffen Marburg
Chair of Vibroacoustics of Vehicles and Machines, Department of Mechanical Engineering,
Technische Universität München
, Boltzmannstraße 15, Garching, D-85748, Germany
Search for other works by this author on:
Alec J. Duncan;
Alec J. Duncan
Centre for Marine Science and Technology, Department of Imaging and Applied Physics, Curtin University
, GPO Box U1987, Perth, Western Australia 6845, Australia
Search for other works by this author on:
Nicole Kessissoglou
Nicole Kessissoglou
School of Mechanical and Manufacturing Engineering, The University of New South Wales
, Sydney, New South Wales 2052, Australia
Search for other works by this author on:
a)
Electronic mail: [email protected]
J. Acoust. Soc. Am. 141, 4278–4288 (2017)
Article history
Received:
February 17 2017
Accepted:
May 04 2017
Citation
Daniel R. Wilkes, Herwig Peters, Paul Croaker, Steffen Marburg, Alec J. Duncan, Nicole Kessissoglou; Non-negative intensity for coupled fluid–structure interaction problems using the fast multipole method. J. Acoust. Soc. Am. 1 June 2017; 141 (6): 4278–4288. https://doi.org/10.1121/1.4983686
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
All we know about anechoic chambers
Michael Vorländer
A survey of sound source localization with deep learning methods
Pierre-Amaury Grumiaux, Srđan Kitić, et al.
Does sound symbolism need sound?: The role of articulatory movement in detecting iconicity between sound and meaning
Mutsumi Imai, Sotaro Kita, et al.
Related Content
Acoustic coupled fluid–structure interactions using a unified fast multipole boundary element method
J. Acoust. Soc. Am. (April 2015)
Simulation for air-coupled ultrasound testing using time-domain BEM
AIP Conference Proceedings (February 2014)
Large‐Scale Multiple Scattering Analysis Using Fast Multipole BEM in Time‐Domain
AIP Conference Proceedings (May 2010)
Application of Fast Multipole Boundary Element Method to Multiple Scattering Analysis of Acoustic and Elastic Waves
AIP Conference Proceedings (March 2007)