Viscothermal damping in thin gas or fluid layers

W.M. Beltman, T.G.H. Basten, H. Tijdeman

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

2 Citations (Scopus)
36 Downloads (Pure)

Abstract

This paper deals with viscothermal wave propagation, including acousto-elastic interaction, For wave propagation in thin gas of fluid layers, the effects of viscosity and thermal conductivity have to be accounted for. These effects can introduce a significant dissipation of energy. A model to describe viscothermal wave propagation was developed. It includes the effect on inertia, viscosity, compressibility and thermal conductivity. It was written in terms of dimensionless parameters. These parameters govern the validity of simplifications and they can be used to put models into perspective. The viscothermal model is validated with specially designed experiments. A numerical finite element model was developed that includes the full acousto-elastic coupling. This model was also validated with experiments. The influence of barriers in a thin layers was investigated experimentally. Finally, the new techniques were applied to a number of practical problems: the damping of double wall panels and the dynamical behavior of a folded array of solar panels during launch.
Original languageEnglish
Title of host publicationAdaptive Structures and Material Systems 1999
Subtitle of host publicationpresented at the 1999 ASME International Mechanical Engineering Congress and Exposition : November 14-19, 1999, Nashville, Tennessee
EditorsGreg Washington, James M. Redmond
Place of PublicationNew York, NY
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages387-395
ISBN (Print)9780791816424
Publication statusPublished - 1999
EventASME International Mechanical Engineering Congress & Exposition, IMECE 1999 - Nashville, United States
Duration: 14 Nov 199916 Nov 1999

Conference

ConferenceASME International Mechanical Engineering Congress & Exposition, IMECE 1999
Abbreviated titleIMECE
CountryUnited States
CityNashville
Period14/11/9916/11/99

Keywords

  • IR-58812

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