Abstract
A randomly fluctuating longitudinal pressure gradient of a non-Gaussian form and arbitrary power spectrum will cause a randomly fluctuating velocity to be superimposed on the steady incompressible flow in a channel. Pressure- gradient and velocity correlations, frequency response functions and system power loss are calculated. Numerical random pressure gradient signals were generated using Fourier series expansion, with random picking of discrete Fourier spectrum values and a nonlinear no memory transformation. Numerical values of the velocity signal were then calculated by linear transformation of the pressure-gradient signal. Pressure-gradient and velocity signals were compared for difference in amplitude, frequency, time lag, and probability distribution functions.
Recommended Citation
Perlmutter, M., "Effect of Randomly Fluctuating Pressure Gradients, with Arbitrarily Specified Power Spectrum and Probability Density, on Flow in Channels" (1971). Symposia on Turbulence in Liquids. 81.
https://scholarsmine.mst.edu/sotil/81
Meeting Name
Symposium on Turbulence in Liquids (1971: Oct. 4-6, Rolla, MO)
Department(s)
Chemical and Biochemical Engineering
Document Type
Article - Conference proceedings
Presentation Type
Contributed Paper
Session
Pressure Fluctuations
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 1972 University of Missouri--Rolla, All rights reserved.
Publication Date
06 Oct 1971
