Journal ArticleDOI
On the Frequency Response of Viscous Compressible Fluids as a Function of the Stokes Number
TLDR
In this paper, a graphical display is given of numerical solutions of Iberall's theory over a wide range as a function of the Stokes number and of a dimensionless frequency.Abstract:
Air, carbon dioxide, and helium test data are presented for the experimental verification of Iberall’s analysis of the dynamic pressure response of viscous compressible fluids in rigid tubes with deadened volume termination against oscillatory frequency. A graphical display is given of numerical solutions of Iberall’s theory over a wide range as a function of the Stokes number and of a dimensionless frequency. Rapid engineering solutions are presented for the following problems: Given a tube, a chamber volume, and a fluid, determine the maximum frequency to be transmitted at ±10 percent amplitude distortion. Given a tube, a chamber volume, and a fluid, sketch the dynamic pressure response curve. Given a chamber volume, a fluid, and a specified frequency to be transmitted within ±10 percent amplitude distortion, plot allowable tube length against tube diameter.read more
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Journal ArticleDOI
On the propagation of sound waves in cylindrical tubes
TL;DR: In this paper, it was shown that the two main parameters governing the propagation of sound waves in gases contained in rigid cylindrical tubes, are the shear wave number, s = R ρ s ω / μ, and the reduced frequency, k = ωR/a 0, and that most of the most significant analytical solutions for the propagation constant, Γ, as given in the literature, can be expressed as simple expressions in terms of these two parameters.
On the propagation of sound waves in cylindrical tubes
TL;DR: In this article, it was shown that the two main parameters governing the propagation of sound waves in gases contained in rigid cylindrical tubes, are the shear wave number, s = R ρ s ω / μ, and the reduced frequency, k = ωR/a 0.
Journal ArticleDOI
Fluid Transmission Lines—Distributed Parameter Models Part 1: A Review of the State of the Art:
J S Stecki,D C Davis +1 more
TL;DR: A hierarchical classification of linear, distributed parameter models which have been used in the study of rigid, uniform fluid transmission lines is presented to assist in the identification of areas of research where future efforts should be directed and hopefully to prevent needless duplication of research effort.
Journal ArticleDOI
Intermittent turbulence in a pulsating pipe flow
Raffaella Tuzi,Paolo Blondeaux +1 more
TL;DR: In this paper, numerical simulations of the pulsating flow in a pipe of circular cross-section characterized by small imperfections are carried out to determine the conditions leading to the appearance of turbulence.
Journal ArticleDOI
A fluidic flowmeter
TL;DR: In this paper, the authors describe a flowmeter that consists of a bistable fluid amplifier which is made to oscillate by interconnecting the two control ports, and the operation of the flowmeter is explained with particular emphasis on the dimensionless characterization of periodic flows as derived from the Navier-Stokes Equations.