Small-Amplitude Frequency Behavior of Fluid Lines With Turbulent Flow

Author:

Brown F. T.1,Margolis D. L.2,Shah R. P.3

Affiliation:

1. Massachusetts Institute of Technology, Cambridge, Mass.

2. Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Mass.

3. General Electric Co., Schenectady, N. Y.

Abstract

The results of semiempirical analytical and experimental studies of the acoustic frequency response of circular tubes with a mean turbulent flow are given. For the frequency range tested, it is seen that the hypothesis of a time-invariant eddy viscosity profile across the tube predicts the behavior well. For lower frequencies a simple lag in the turbulence profile from its equilibrium values is hypothesized which should be of moderate importance in acoustic behavior and of great importance in large-amplitude behavior. The lag is estimated using the steady-flow results of Goldberg.

Publisher

ASME International

Subject

General Medicine

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