Preliminary Study of Stability of Flow from Two Ducts Discharging into a Common Duct

Abstract

This research is a preliminary investigation of the instability of flow from two ducts that join into a common duct and of the influence of the various parameters upon the phenomenon. A two-dimensional potential analysis was carried out under the assumption that the two ducts discharge into a region of constant pressure. For this problem, there exists a unique solution if a Joukowski hypothesis is imposed; also, the results indicate the flow to be stable with respect to small changes in the physical parameters. This is confirmed by experiments with a two-dimensional water table. The simplified model, therefore, does not explain oscillations and asymmetries of flow for actual symmetric duct configurations.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1951
Accession Number
ADA381949

Entities

People

  • Albert I. Bellin
  • D. R. Messina
  • Paul B. Richards

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Velocity
  • Asymmetry
  • Flow
  • Fluid Flow
  • Free Stream
  • Geometry
  • Groundwater
  • Mach Number
  • Mass Flow
  • Pressure Measurement
  • Reynolds Number
  • Secondary Flow
  • Stagnation Point
  • Stagnation Pressure
  • Symmetry
  • Turbulent Mixing
  • Two Dimensional

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.