Application of the Analogy Between Water Flow with a Free Surface and Two-Dimensional Compressible Gas Flow

Abstract

The theory of the hydraulic analogy-that is the analogy between water flow with a free surface and two-dimensional compressible gas flow and the limitations and conditions of the analogy are discussed. A test was run using the hydraulic analogy as applied to the flow about circular cylinders of various diameters at subsonic velocities extending into the supercritical range. The apparatus and techniques used in this application are described and criticized. Reasonably satisfactory agreement of pressure distributions and flow fields existed between water and airflow about corresponding bodies. This agreement indicated the possibility of extending experimental compressibility research by new methods.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1947
Accession Number
ADA298943

Entities

People

  • Jack G. Bitterly
  • James B. Orlin
  • Norman J. Linder

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Flow
  • Boundary Layer
  • Cameras
  • Capillary Waves
  • Equations
  • Flow
  • Fluid Dynamics
  • Gas Flow
  • Layers
  • Mach Number
  • Measurement
  • Photographs
  • Pressure Distribution
  • Standing Waves
  • Surface Waves
  • Two Dimensional
  • Water Flow

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design