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Title
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Modelling Of Nonlinear Dilatation Response Of Fluids Containing Columns - Plastic And Shear Relaxation Considered
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Description
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The non-linear wave equation governing the propagation and scatter of dilatation waves in discontinuous media is presented and its Eulerian numerical analogue is used to study scatter of acoustic dilatation waves by columns and ducts in elastic and visco-elastic fluids. Plastic and viscoelastic relaxation mechanisms are considered. The spectral form of the wave equation is developed and used to discuss dispersion. Selected applications of the numerical analogue to simulation of scatter, propagation and echo attenuation are presented.
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Creator
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Wendlandt, Bernd
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Publisher
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Wright-Patterson Air Force Base, OH : Wright Laboratory, Flight Dynamics Directorate, Air Force Systems Command
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Date
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1991
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Format
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1 online resource (9 pages) : ill.
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Type
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article
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Abstract
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The non-linear wave equation governing the propagation and scatter of dilatation waves in discontinuous media is presented and its Eulerian numerical analogue is used to study scatter of acoustic dilatation waves by columns and ducts in elastic and visco-elastic fluids. Plastic and viscoelastic relaxation mechanisms are considered. The spectral form of the wave equation is developed and used to discuss dispersion. Selected applications of the numerical analogue to simulation of scatter, propagation and echo attenuation are presented.
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Date Issued
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1991-08
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Extent
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9
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Corporate Author
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Department of Defence, Materials Research Laboratory
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Laboratory
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Wright Laboratory
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Report Number
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WL-TR-91-3078 Volume II, pages GAC-1 to GAC-9
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DoD Project
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2401
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DoD Task
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240104
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Distribution Conflict
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No
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Index Abstract
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Contrails only
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Photo Quality
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Not Needed
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Distribution Classification
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1
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Report Availability
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Full text available
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Provenance
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University of Colorado Colorado Springs, Kraemer Family Library
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Identifier
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ADA241312
