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Simulation of compressible flows using Hermite methods

Hagstrom, Thomas and Appelö, Daniel and Colonius, Tim and Inkman, Matthew and Jang, Chang Young (2012) Simulation of compressible flows using Hermite methods. In: Acoustics 2012 Hong Kong, 14-18 May 2012, Hong Kong.

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Spectral element methods based on Hermite interpolation have a number of unique properties. First of all, the stabilization inherent in the interpolation process is sufficient to suppress nonlinear instabilities observed with other discretization schemes and leads to accurate linear transport of nonsmooth solutions. Second, and most important, they allow purely local time-stepping procedures limited only by geometric domain-of-dependence requirements. Thus high-order Hermite methods maximize the computation-to-communication ratio and therefore they admit highly efficient implementations on multicore processors. In this talk we focus on the application of Hermite methods to simulate unsteady compressible flows. Examples will include the direct simulation of the aeroacoustics of a low Reynolds number subsonic jet, as well as studies of more basic sound radiating flows. The latter will illustrate the coupling of Hermite methods with more standard discontinuous Galerkin discretizations to handle physical boundaries.

Item Type:Conference or Workshop Item (Paper)
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URLURL TypeDescription ItemConference Site ItemConference Program
Colonius, Tim0000-0003-0326-3909
Additional Information:© Acoustical Society of America. Published Online: 12 April 2012.
Subject Keywords:Aeroacoustics; Fluid flows; Numerical methods; Computational fluid dynamics
Record Number:CaltechAUTHORS:20190712-112320617
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97099
Deposited By: Melissa Ray
Deposited On:15 Jul 2019 16:55
Last Modified:16 Nov 2021 17:26

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