Accession Number:

ADA023344

Title:

A Computer Program for Predicting the Frequency Response of Complex Pneumatic Line Networks.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1974-12-01

Pagination or Media Count:

66.0

Abstract:

A computer program which can predict the frequency response of complex pneumatic line networks has been written in Fortran Extended language in overlay structure. The program assumes plane pressure wave propagation and small perturbations. The lines may terminate with an arifice, another line, two branching lines, or may be open or blocked. If the lines are not blocked the flow is calculated based on laminar flow equations for incompressible fluids, with corrections for pressure drops across each line. Experimental results were compared with computer prediction for frequencies up to 1200 hz. The blocked line cases showed excellent agreement with theory for both gain and phase shift. The case with flow overpredicted the peak pressure gains, but the frequencies at which the peaks occurred were predicted, and the phase shift data showed excellent agreement with theory.

Subject Categories:

  • Computer Programming and Software
  • Computer Systems
  • Hydraulic and Pneumatic Equipment
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE